1
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Zueva AY, Bilyachenko AN, Khrustalev VN, Shul'pina LS, Ikonnikov NS, Dorovatovskii PV, Shubina ES, Ragimov K, Lobanov NN, Sun D. Rational (supra)molecular design and catalytic activity of cage-like Cu 4-based phenylsilsesquioxanes. NANOSCALE 2024. [PMID: 39289897 DOI: 10.1039/d4nr02173h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
An extended (i.e., 19 distinct species) family of cage-like Cu4-phenylsilsesquioxanes allowed us to accentuate the general regularities behind their structural organization. Influencing factors, namely the (i) size of external alkali metal ions (from Li to Cs) and (ii) nature of bridging linkers (including the smallest possible ones, like a water molecule) on the self-assembly/supramolecular assembly of such Cu4-building blocks have been thoroughly explored. A Cu4K4-based complex has been evaluated as a precatalyst in the oxidation of alkanes (cyclohexane, n-heptane, methylcyclohexane) and alcohols. The experimental evidence that radical species participate in the oxidation of alkanes is provided.
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Affiliation(s)
- Anna Y Zueva
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia.
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklay Str. 6, 117198 Moscow, Russia
| | - Alexey N Bilyachenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia.
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklay Str. 6, 117198 Moscow, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklay Str. 6, 117198 Moscow, Russia
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences (RAS), Leninsky Prospect 47, 119991 Moscow, Russia
| | - Lidia S Shul'pina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia.
| | - Nikolay S Ikonnikov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia.
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", Akademika Kurchatova pl. 1, 123182 Moscow, Russia
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia.
| | - Karim Ragimov
- Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan
| | - Nikolai N Lobanov
- Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklay Str. 6, 117198 Moscow, Russia
| | - Di Sun
- Department of Chemistry and Chemical Engineering, Shandong University, Shanda South Road 27, 250100 Jinan, China.
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2
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Zueva AY, Bilyachenko AN, Arteev IS, Khrustalev VN, Dorovatovskii PV, Shul'pina LS, Ikonnikov NS, Gutsul EI, Rahimov KG, Shubina ES, Reis Conceição N, Mahmudov KT, Guedes da Silva MFC, Pombeiro AJL. A Family of Hexacopper Phenylsilsesquioxane/Acetate Complexes: Synthesis, Solvent-Controlled Cage Structures, and Catalytic Activity. Chemistry 2024; 30:e202401164. [PMID: 38551412 DOI: 10.1002/chem.202401164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Indexed: 04/26/2024]
Abstract
Convenient self-assembly synthesis of copper(II) complexes via double (phenylsilsesquioxane and acetate) ligation allows to isolate a family of impressive sandwich-like cage compounds. An intriguing feature of these complexes is the difference in the structure of a pair of silsesquioxane ligands despite identical (Cu6) nuclearity and number (four) of acetate fragments. Formation of particular combination of silsesquioxane ligands (cyclic/cyclic vs condensed/condensed vs cyclic/condensed) was found to be dependent on the synthesis/crystallization media. A combination of Si4-cyclic and Si6-condensed silsesquioxane ligands is a brand new feature of cage metallasilsesquioxanes. A representative Cu6-complex (4) (with cyclic silsesquioxanes) exhibited high catalytic activity in the oxidation of alkanes and alcohols with peroxides. Maximum yield of the products of cyclohexane oxidation attained 30 %. The compound 4 was also tested as catalyst in the Baeyer-Villiger oxidation of cyclohexanone by m-chloroperoxybenzoic acid: maximum yields of 88 % and 100 % of ϵ-caprolactone were achieved upon conventional heating at 50 °C for 4 h and MW irradiation at 70 or 80 °C during 30 min, respectively. It was also possible to obtain the lactone (up to 16 % yield) directly from the cyclohexane via a tandem oxidation/Baeyer-Villiger oxidation reaction using the same oxidant.
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Affiliation(s)
- Anna Y Zueva
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119334, Moscow, Russian Federation
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Alexey N Bilyachenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119334, Moscow, Russian Federation
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Ivan S Arteev
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
- Higher Chemical College, Mendeleev University of Chemical Technology of Russia, Miusskaya Sq. 9, 125047, Moscow, Russia
| | - Victor N Khrustalev
- Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991, Moscow, Russian Federation
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", 1 Akademika Kurchatova Pl., 123182, Moscow, Russian Federation
| | - Lidia S Shul'pina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119334, Moscow, Russian Federation
| | - Nikolay S Ikonnikov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119334, Moscow, Russian Federation
| | - Evgenii I Gutsul
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119334, Moscow, Russian Federation
| | - Karim G Rahimov
- Baku State University, Z. Xalilov Str. 23, Az 1148, Baku, Azerbaijan
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119334, Moscow, Russian Federation
| | - Nuno Reis Conceição
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Kamran T Mahmudov
- Baku State University, Z. Xalilov Str. 23, Az 1148, Baku, Azerbaijan
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - M Fátima C Guedes da Silva
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
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3
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Bilyachenko AN, Khrustalev VN, Dorovatovskii PV, Shul'pina LS, Ikonnikov NS, Shubina ES, Lobanov NN, Aliyeva VA, Nunes AVM, Mahmudov KT, Kozlov YN, Pombeiro AJL. Fe(III)-Based Phenylsilsesquioxane/Acetylacetonate Complexes: Synthesis, Cage-like Structure, and High Catalytic Activity. Inorg Chem 2024; 63:1909-1918. [PMID: 38215459 DOI: 10.1021/acs.inorgchem.3c03587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
Unprecedented iron-based silsesquioxane/acetylacetonate complexes were synthesized. The intriguing cage-like structure of compounds is alkaline metal-dependent: the Fe2Li2 complex includes condensed Si6-silsesquioxane and four acetylacetonate ligands; the Fe4Na4 complex exhibits two cyclic Si4-silsesquioxane and eight acetylacetonate ligands, while the Fe3K3 complex features two cyclic Si3-silsesquioxane and six acetylacetonate ligands. The latter case is the very first observation of small trimeric silsesquioxane ligands in the composition of cage-like metallasilsesquioxanes. The Fe4Na4-based complex exhibits a record high activity in the oxidation of inert alkanes with peroxides (55% yield of oxygenates in cyclohexane oxidation). It also acts as a catalyst in the cycloaddition of CO2 with epoxides, leading to cyclic carbonates in good yields (58-96%).
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Affiliation(s)
- Alexey N Bilyachenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russian Federation
- Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow 117198, Russian Federation
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow 117198, Russian Federation
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, Moscow 119991, Russian Federation
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", 1 Akademika Kurchatova Pl., Moscow 123182, Russian Federation
| | - Lidia S Shul'pina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russian Federation
| | - Nikolay S Ikonnikov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russian Federation
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russian Federation
| | - Nikolai N Lobanov
- Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow 117198, Russian Federation
| | - Vusala A Aliyeva
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Ana V M Nunes
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica 2829-516, Portugal
| | - Kamran T Mahmudov
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
- Excellence Center, Baku State University, Z. Xalilov Str. 23, Baku Az 1148, Azerbaijan
| | - Yuriy N Kozlov
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 4 Ulitsa Kosygina, Moscow 119991, Russian Federation
- Plekhanov Russian University of Economics, 36 Stremyannyi Pereulok, Moscow 117997, Russian Federation
| | - Armando J L Pombeiro
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow 119991, Russian Federation
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4
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Huang WS, Xu H, Yang H, Xu LW. Catalytic Synthesis of Silanols by Hydroxylation of Hydrosilanes: From Chemoselectivity to Enantioselectivity. Chemistry 2024; 30:e202302458. [PMID: 37861104 DOI: 10.1002/chem.202302458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 10/21/2023]
Abstract
As a crucial class of functional molecules in organosilicon chemistry, silanols are found valuable applications in the fields of modern science and will be a potentially powerful framework for biologically active compounds or functional materials. It has witnessed an increasing demand for non-natural organosilanols, as well as the progress in the synthesis of these structural features. From the classic preparative methods to the catalytic selective oxidation of hydrosilanes, electrochemical hydrolysis of hydrosilanes, and then the construction of the most challenging silicon-stereogenic silanols. This review summarized the progress in the catalyzed synthesis of silanols via hydroxylation of hydrosilanes in the last decade, with a particular emphasis on the latest elegant developments in the desymmetrization strategy for the enantioselective synthesis of silicon-stereogenic silanols from dihydrosilanes.
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Affiliation(s)
- Wei-Sheng Huang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Hao Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, and Key Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China
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5
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Bilyachenko AN, Gutsul EI, Khrustalev VN, Chusova O, Dorovatovskii PV, Aliyeva VA, Paninho AB, Nunes AVM, Mahmudov KT, Shubina ES, Pombeiro AJL. A Family of Cagelike Mn-Silsesquioxane/Bathophenanthroline Complexes: Synthesis, Structure, and Catalytic and Antifungal Activity. Inorg Chem 2023; 62:15537-15549. [PMID: 37698451 DOI: 10.1021/acs.inorgchem.3c02040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
This study reports a novel family of cage manganesesilsesquioxanes prepared via complexation with bathophenanthroline (4,7-diphenyl-1,10-phenanthroline). The resulting Mn4-, Mn6Li2-, and Mn4Na-compounds exhibit several unprecedented cage metallasilsesquioxane structural features, including intriguing self-assembly of silsesquioxane ligands. Complexes were tested in vitro for fungicidal activity against seven classes of phytopathogenic fungi. The representative Mn4Na-complex acts as a catalyst in the cycloaddition of CO2 to epoxides under solvent-free conditions to form cyclic carbonates in good yields.
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Affiliation(s)
- Alexey N Bilyachenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
- Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, 117198 Moscow, Russia
| | - Evgenii I Gutsul
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, 117198 Moscow, Russia
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect, 47, 119991 Moscow, Russia
| | - Olga Chusova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", Acad. Kurchatov Sq., 1, 123182 Moscow, Russia
| | - Vusala A Aliyeva
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana B Paninho
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Ana V M Nunes
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Kamran T Mahmudov
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Excellence Center, Baku State University, Z. Xalilov Str. 23, Az 1148 Baku, Azerbaijan
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Armando J L Pombeiro
- Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, 117198 Moscow, Russia
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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6
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Bilyachenko AN, Arteev IS, Khrustalev VN, Shul'pina LS, Korlyukov AA, Ikonnikov NS, Shubina ES, Kozlov YN, Reis Conceição N, Guedes da Silva MFC, Mahmudov KT, Pombeiro AJL. Cage-like Cu 5Cs 4-Phenylsilsesquioxanes: Synthesis, Supramolecular Structures, and Catalytic Activity. Inorg Chem 2023; 62:13573-13586. [PMID: 37561666 DOI: 10.1021/acs.inorgchem.3c01989] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
A small family of nonanuclear Cu5Cs4-based phenylsilsesquioxanes 1-2 were prepared by a convenient self-assembly approach and characterized by X-ray diffraction studies. The compounds 1 and 2 show some unprecedented structural features such as the presence of a [Ph14Si14O28]14- silsesquioxane ligand and a CuII5CsI4 nuclearity in which the metal cations occupy unusual positions within the cluster. Copper ions are "wrapped" into a silsesquioxane matrix, while cesium ions are located in external positions. This resulted in cesium-involved aggregation of coordination polymer structures. Both compounds 1 and 2 realize specific metallocene (cesium-phenyl) linkage between neighboring cages. Compound 2 is evaluated as a catalyst in the Baeyer-Villiger (B-V) oxidation of cyclohexanone and tandem cyclohexane oxidation/B-V oxidation of cyclohexanone with m-chloroperoxybenzoic acid (mCPBA) as an oxidant, in an aqueous acetonitrile medium, and HNO3 as the promoter. A quantitative yield of ε-caprolactone was achieved under conventional heating at 50 °C for 4 h or MW irradiation for 30 min (for cyclohexanone as substrate); 17 and 19% yields of lactone upon MW irradiation at 80 °C for 30 min and heating at 50 °C for 4 h, respectively (for cyclohexane as a substrate), were achieved. Complex 2 was evaluated as a catalyst for the oxidation of alkanes to alkyl hydroperoxides and alcohols to ketones with peroxides at 60 °C in acetonitrile. The maximum yield of cyclohexane oxidation products was 30%. Complex 2 exhibits high activity in the oxidation of alcohols.
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Affiliation(s)
- Alexey N Bilyachenko
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow 119991, Russia
- Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, Moscow 117198, Russia
| | - Ivan S Arteev
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow 119991, Russia
- Higher Chemical College, Mendeleev University of Chemical Technology of Russia, Miusskaya Sq. 9, Moscow 125047, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, Moscow 117198, Russia
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Lidia S Shul'pina
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow 119991, Russia
| | - Alexander A Korlyukov
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow 119991, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov Str. 1, Moscow 117997, Russia
| | - Nikolay S Ikonnikov
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow 119991, Russia
| | - Elena S Shubina
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, Moscow 119991, Russia
| | - Yuriy N Kozlov
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina, dom 4, Moscow 119991, Russia
- Plekhanov Russian University of Economics, Stremyannyi Pereulok 36, Moscow 117997, Russia
| | - Nuno Reis Conceição
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - M Fátima C Guedes da Silva
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Kamran T Mahmudov
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
- Excellence Center, Baku State University, Z. Xalilov Str. 23, Baku Az 1148, Azerbaijan
| | - Armando J L Pombeiro
- Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, Moscow 117198, Russia
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1049-001, Portugal
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7
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Yang J, Cao X, Wei L, Zhang J, Zhang J, Liu P, Xu L, Li P. Visible Light-Mediated Organoboron-Catalyzed Metal-Free Synthesis of Silanols from Silanes. Molecules 2023; 28:molecules28104082. [PMID: 37241823 DOI: 10.3390/molecules28104082] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/09/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Herein, a four-coordinated organoboron compound, aminoquinoline diarylboron (AQDAB), is utilized as the photocatalyst in the oxidation of silane to silanol. This strategy effectively oxidizes Si-H bonds, affording Si-O bonds. Generally, the corresponding silanols can be obtained in moderate to good yields at room temperature under oxygen atmospheres, representing a green protocol to complement the existing preparation methods for silanols.
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Affiliation(s)
- Jinbo Yang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Xiangxue Cao
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Lanfeng Wei
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Jianshu Zhang
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Jinli Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Ping Liu
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Liang Xu
- State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Beisi Road, Xinjiang Uygur Autonomous Region, Shihezi 832003, China
| | - Pengfei Li
- State Key Laboratory for Mechanical Behavior of Materials, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China
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8
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Stachowiak-Dłużyńska H, Kuciński K, Broniarz K, Szafoni E, Gruszczyński M, Lewandowski D, Consiglio G, Hreczycho G. Access to germasiloxanes and alkynylgermanes mediated by earth-abundant species. Sci Rep 2023; 13:5618. [PMID: 37024548 PMCID: PMC10079689 DOI: 10.1038/s41598-023-32172-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 03/23/2023] [Indexed: 04/08/2023] Open
Abstract
The reactions between silanols or terminal acetylenes with alkynylgermanes have been accomplished using potassium bis(trimethylsilyl)amide as the catalyst. This strategy has provided an entry point into various organogermanes including germasiloxanes and alkynylgermanes. Remarkably, not only KHMDS but also simple bases such as KOH can serve as efficient catalysts in this process.
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Affiliation(s)
- Hanna Stachowiak-Dłużyńska
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego St. 8, 61-614, Poznan, Poland
| | - Krzysztof Kuciński
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego St. 8, 61-614, Poznan, Poland.
| | - Konstancja Broniarz
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego St. 8, 61-614, Poznan, Poland
| | - Ewelina Szafoni
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego St. 8, 61-614, Poznan, Poland
| | - Marcin Gruszczyński
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego St. 8, 61-614, Poznan, Poland
| | - Dariusz Lewandowski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego St. 8, 61-614, Poznan, Poland
| | - Giuseppe Consiglio
- Dipartimento di Scienze Chimiche, Università degli studi di Catania, viale A. Doria 6, 95125, Catania, Italy
| | - Grzegorz Hreczycho
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznanskiego St. 8, 61-614, Poznan, Poland.
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9
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Prieto-Pascual U, Rodríguez-Diéguez A, Freixa Z, Huertos MA. Tailor-Made Synthesis of Hydrosilanols, Hydrosiloxanes, and Silanediols Catalyzed by di-Silyl Rhodium(III) and Iridium(III) Complexes. Inorg Chem 2023; 62:3095-3105. [PMID: 36757389 PMCID: PMC10863934 DOI: 10.1021/acs.inorgchem.2c03953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Indexed: 02/10/2023]
Abstract
Siloxanes and silanols containing Si-H units are important building blocks for the synthesis of functionalized siloxane materials, and their synthesis is a current challenge. Herein, we report the selective synthesis of hydrosilanols, hydrosiloxanes, and silanodiols depending on the nature of the catalysts and the silane used. Two neutral ({MCl[SiMe2(o-C6H4PPh2)]2}; M = Rh, Ir) and two cationic ({M[SiMe2(o-C6H4PPh2)]2(NCMe)}[BArF4]; M = Rh, Ir) have been synthesized and their catalytic behavior toward hydrolysis of secondary silanes has been described. Using the iridium complexes as precatalysts and diphenylsilane as a substrate, the product obtained is diphenylsilanediol. When rhodium complexes are used as precatalysts, it is possible to selectively obtain silanediol, hydrosilanol, and hydrosiloxane depending on the catalysts (neutral or cationic) and the silane substituents.
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Affiliation(s)
- Unai Prieto-Pascual
- Facultad
de Química, Universidad del País
Vasco (UPV/EHU), 20018 San Sebastián, Spain
| | | | - Zoraida Freixa
- Facultad
de Química, Universidad del País
Vasco (UPV/EHU), 20018 San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Miguel A. Huertos
- Facultad
de Química, Universidad del País
Vasco (UPV/EHU), 20018 San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
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10
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Bilyachenko AN, Arteev IS, Khrustalev VN, Zueva AY, Shul’pina LS, Shubina ES, Ikonnikov NS, Shul’pin GB. Cagelike Octacopper Methylsilsesquioxanes: Self-Assembly in the Focus of Alkaline Metal Ion Influence-Synthesis, Structure, and Catalytic Activity. Molecules 2023; 28:1211. [PMID: 36770877 PMCID: PMC9921387 DOI: 10.3390/molecules28031211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/21/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023] Open
Abstract
A family of unusual octacopper cage methylsilsesquioxanes 1-4 were prepared and characterized. Features of their cagelike (prismatic) structure were established using X-ray diffraction studies. Effects of distortion of prismatic cages 1-4 due to variation of (i) additional alkaline metal ions (K, Rb, or Cs), (ii) combination of solvating ligands, and (iii) nature of encapsulating species were found. Opportunities for the design of supramolecular 1D extended structures were found. These opportunities are based on (i) formate linkers between copper centers (in the case of Cu8K2-based compound 2) or (ii) crown ether-like contacts between cesium ions and siloxane cycles (in the case of Cu8Cs2-based compound 4). Cu8Cs2-complex 4 was evaluated in the catalysis of alkanes and alcohols. Complex 4 exhibits high catalytic activity. The yield of cyclohexane oxidation products is 35%. The presence of nitric acid is necessary as a co-catalyst. The oxidation of alcohols with the participation of complex 4 as a catalyst and tert-butyl hydroperoxide as an oxidizer also proceeds in high yields of up to 98%.
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Affiliation(s)
- Alexey N. Bilyachenko
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia
| | - Ivan S. Arteev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia
- Higher Chemical College, Mendeleev University of Chemical Technology of Russia, Miusskaya Sq. 9, 125047 Moscow, Russia
| | - Victor N. Khrustalev
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklay Str. 6, 117198 Moscow, Russia
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences (RAS), Leninsky Prospect 47, 119991 Moscow, Russia
| | - Anna Y. Zueva
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklay Str. 6, 117198 Moscow, Russia
| | - Lidia S. Shul’pina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia
| | - Elena S. Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia
| | - Nikolay S. Ikonnikov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, 119991 Moscow, Russia
| | - Georgiy B. Shul’pin
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Ulitsa Kosygina 4, 119991 Moscow, Russia
- Chair of Chemistry and Physics, Plekhanov Russian University of Economics, Stremyannyi Pereulok, Dom 36, 117997 Moscow, Russia
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11
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Hybrid Silsesquioxane/Benzoate Cu 7-Complexes: Synthesis, Unique Cage Structure, and Catalytic Activity. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238505. [PMID: 36500598 PMCID: PMC9739484 DOI: 10.3390/molecules27238505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/24/2022] [Accepted: 11/27/2022] [Indexed: 12/12/2022]
Abstract
A series of phenylsilsesquioxane-benzoate heptacopper complexes 1-3 were synthesized and characterized by X-ray crystallography. Two parallel routes of toluene spontaneous oxidation (into benzyl alcohol and benzoate) assisted the formation of the cagelike structure 1. A unique multi-ligation of copper ions (from (i) silsesquioxane, (ii) benzoate, (iii) benzyl alcohol, (iv) pyridine, (v) dimethyl-formamide and (vi) water ligands) was found in 1. Directed self-assembly using benzoic acid as a reactant afforded complexes 2-3 with the same main structural features as for 1, namely heptanuclear core coordinated by (i) two distorted pentameric cyclic silsesquioxane and (ii) four benzoate ligands, but featuring other solvate surroundings. Complex 3 was evaluated as a catalyst for the oxidation of alkanes to alkyl hydroperoxides and alcohols to ketones with hydrogen peroxide and tert-butyl hydroperoxide, respectively, at 50 °C in acetonitrile. The maximum yield of cyclohexane oxidation products as high as 32% was attained. The oxidation reaction results in a mixture of cyclohexyl hydroperoxide, cyclohexanol, and cyclohexanone. Upon the addition of triphenylphosphine, the cyclohexyl hydroperoxide is completely converted to cyclohexanol. The specific regio- and chemoselectivity in the oxidation of n-heptane and methylcyclohexane, respectively, indicate the involvement of of hydroxyl radicals. Complex 3 exhibits a high activity in the oxidation of alcohols.
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12
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Drozdov FV, Manokhina EA, Vu TD, Muzafarov AM. Polyborosiloxanes (PBS): Evolution of Approaches to the Synthesis and the Prospects of Their Application. Polymers (Basel) 2022; 14:polym14224824. [PMID: 36432951 PMCID: PMC9696069 DOI: 10.3390/polym14224824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/20/2022] [Accepted: 10/26/2022] [Indexed: 11/12/2022] Open
Abstract
The mini-review deals with borosiloxanes as a class of organoelement compounds that comprise Si-O-B bonds, including individual compounds and polymeric structures. The borosiloxanes first synthesized in the 1950s using simple methods demonstrated very unusual properties but were hydrolytically unstable. However, in recent times, synthetic methods have changed significantly, which made it possible to synthesize borosiloxanes that are resistant to external factors, including atmospheric moisture. Borosiloxanes became important due to their unique properties. For example, borosiloxane liquids acquire a thixotropic behavior due to donor-acceptor interchain interactions. In addition, borosiloxanes are used to produce flame-retardant ceramics. An analysis of the literature sources shows that no review has yet been completed on the topic of borosiloxanes. Therefore, we decided that even a brief outlook of this area would be useful for researchers in this and related fields. Thus, the review shows the evolution of the synthesis methods and covers the studies on the properties of these unique molecules, the latest achievements in this field, and the prospects for their application.
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Affiliation(s)
- Fedor V. Drozdov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia
- Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia
- Correspondence:
| | - Elizaveta A. Manokhina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Tran D. Vu
- Institute of Tropical Durability, Joint Russia-Vietnam Tropical Science and Technology, Hanoi 122103, Vietnam
| | - Aziz M. Muzafarov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia
- Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia
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13
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A Novel Family of Cage-like (CuLi, CuNa, CuK)-phenylsilsesquioxane Complexes with 8-hydroxyquinoline Ligands: Synthesis, Structure, and Catalytic Activity. Molecules 2022; 27:molecules27196205. [PMID: 36234735 PMCID: PMC9571593 DOI: 10.3390/molecules27196205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/17/2022] Open
Abstract
The first examples of metallasilsesquioxane complexes, including ligands of the 8-hydroxyquinoline family 1–9, were synthesized, and their structures were established by single crystal X-ray diffraction using synchrotron radiation. Compounds 1–9 tend to form a type of sandwich-like cage of Cu4M2 nuclearity (M = Li, Na, K). Each complex includes two cisoid pentameric silsesquioxane ligands and two 8-hydroxyquinoline ligands. The latter coordinates the copper ions and corresponding alkaline metal ions (via the deprotonated oxygen site). A characteristic (size) of the alkaline metal ion and a variation of characteristics of nitrogen ligands (8-hydroxyquinoline vs. 5-chloro-8-hydroxyquinoline vs. 5,7-dibromo-8-hydroxyquinoline vs. 5,7-diiodo-8-hydroxyquinoline) are highly influential for the formation of the supramolecular structure of the complexes 3a, 5, and 7–9. The Cu6Na2-based compound 2 exhibits high catalytic activity towards the oxidation of (i) hydrocarbons by H2O2 activated with HNO3, and (ii) alcohols by tert-butyl hydroperoxide. Studies of kinetics and their selectivity has led us to conclude that it is the hydroxyl radicals that play a crucial role in this process.
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14
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Bilyachenko AN, Gutsul EI, Khrustalev VN, Astakhov GS, Zueva AY, Zubavichus YV, Kirillova MV, Shul'pina LS, Ikonnikov NS, Dorovatovskii PV, Shubina ES, Kirillov AM, Shul'pin GB. Acetone Factor in the Design of Cu 4-, Cu 6-, and Cu 9-Based Cage Coppersilsesquioxanes: Synthesis, Structural Features, and Catalytic Functionalization of Alkanes. Inorg Chem 2022; 61:14800-14814. [PMID: 36059209 DOI: 10.1021/acs.inorgchem.2c02217] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The present study describes a new feature in the self-assembly of cagelike copperphenylsilsesquioxanes: the strong influence of acetone solvates on cage structure formation. By this simple approach, a series of novel tetra-, hexa-, or nonacoppersilsesquioxanes were isolated and characterized. In addition, several new complexes of Cu4 or Cu6 nuclearity bearing additional nitrogen-based ligands (ethylenediamine, 2,2'-bipyridine, phenanthroline, bathophenanthroline, or neocuproine) were produced. Single-crystal X-ray diffraction studies established molecular architectures of all of the synthesized products. Several coppersilsesquioxanes represent a novel feature of cagelike metallasilsesquioxane (CLMS) in terms of molecular topology. A Cu4-silsesquioxane complex with ethylenediamine (En) ligands was isolated via the unprecedented self-assembly of a partly condensed framework of silsesquioxane ligands, followed by the formation of a sandwich-like cage. Two prismatic Cu6 complexes represent the different conformers─regular and elliptical hexagonal prisms, "cylinders", determined by the different orientations of the coordinated acetone ligands ("shape-switch effect"). A heterometallic Cu4Na4-sandwich-like derivative represents the first example of a metallasilsesquioxane complex with diacetone alcohol ligands formed in situ due to acetone condensation reaction. As a selected example, the compound [(Ph6Si6O11)2Cu4En2]·(acetone)2 was explored in homogeneous oxidation catalysis. It catalyzes the oxidation of alkanes to alkyl hydroperoxides with hydrogen peroxide and the oxidation of alcohols to ketones with tert-butyl hydroperoxide. Radical species take part in the oxidation of alkanes. Besides, [(Ph6Si6O11)2Cu4En2]·(acetone)2 catalyzes the mild oxidative functionalization of gaseous alkanes (ethane, propane, n-butane, and i-butane). Two different model reactions were investigated: (1) the oxidation of gaseous alkanes with hydrogen peroxide to give a mixture of oxygenates (alcohols, ketones, or aldehydes) and (2) the carboxylation of Cn gaseous alkanes with carbon monoxide, water, and potassium peroxodisulfate to give Cn+1 carboxylic acids (main products), along with the corresponding Cn oxygenates. For these reactions, the effects of acid promoter, reaction time, and substrate scope were explored. As expected for free-radical-type reactions, the alkane reactivity follows the trend C2H6 < C3H8 < n-C4H10 < i-C4H10. The highest total product yields were observed in the carboxylation of i-butane (up to 61% based on i-C4H10). The product yields and catalyst turnover numbers (TONs) are remarkable, given an inertness of gaseous alkanes and very mild reaction conditions applied (low pressures, 50-60 °C temperatures).
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Affiliation(s)
- Alexey N Bilyachenko
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia.,Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, 117198 Moscow, Russia
| | - Evgenii I Gutsul
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, 117198 Moscow, Russia.,Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Grigorii S Astakhov
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Anna Y Zueva
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia.,Peoples' Friendship University of Russia, Miklukho-Maklay St., 6, 117198 Moscow, Russia
| | - Yan V Zubavichus
- Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Nikolskii prosp., 1, Koltsovo 630559, Russia
| | - Marina V Kirillova
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Lidia S Shul'pina
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Nikolay S Ikonnikov
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", Akademika Kurchatova pl., 1, 123182 Moscow, Russia
| | - Elena S Shubina
- A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Alexander M Kirillov
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Georgiy B Shul'pin
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina, dom 4, Moscow 119991, Russia.,Chair of Chemistry and Physics, Plekhanov Russian University of Economics, Stremyannyi pereulok 36, Moscow 117997, Russia
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15
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Almenara N, Garralda MA, Lopez X, Matxain JM, Freixa Z, Huertos MA. Hydrogen Tunneling in Catalytic Hydrolysis and Alcoholysis of Silanes. Angew Chem Int Ed Engl 2022; 61:e202204558. [PMID: 35833924 PMCID: PMC9545861 DOI: 10.1002/anie.202204558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Indexed: 11/11/2022]
Abstract
An unprecedented quantum tunneling effect has been observed in catalytic Si−H bond activations at room temperature. The cationic hydrido‐silyl‐iridium(III) complex, {Ir[SiMe(o‐C6H4SMe)2](H)(PPh3)(THF)}[BArF4], has proven to be a highly efficient catalyst for the hydrolysis and the alcoholysis of organosilanes. When triethylsilane was used as a substrate, the system revealed the largest kinetic isotopic effect (KIESi−H/Si−D=346±4) ever reported for this type of reaction. This unexpectedly high KIE, measured at room temperature, together with the calculated Arrhenius preexponential factor ratio (AH/AD=0.0004) and difference in the observed activation energy [(EaD
−EaH
)=34.07 kJ mol−1] are consistent with the participation of quantum tunneling in the catalytic process. DFT calculations have been used to unravel the reaction pathway and identify the rate‐determining step. Aditionally, isotopic effects were considered by different methods, and tunneling effects have been calculated to be crucial in the process.
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Affiliation(s)
- Naroa Almenara
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
| | - Maria A. Garralda
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
| | - Xabier Lopez
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- Donostia International Physics Center (DIPC) 20018 San Sebastián Spain
| | - Jon M. Matxain
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- Donostia International Physics Center (DIPC) 20018 San Sebastián Spain
| | - Zoraida Freixa
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- IKERBASQUE. Basque Foundation for Science 48013 Bilbao Spain
| | - Miguel A. Huertos
- University of Basque Country (UPV/EHU) Donostia-San Sebastian 20018 San Sebastián Spain
- IKERBASQUE. Basque Foundation for Science 48013 Bilbao Spain
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16
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Ma X, Xu J, Liu C, Zhang D. DFT calculations rationalize regioselectivity and chemodivergence in nickel-catalyzed couplings of aldehyde, alkyne, and dialkylsilane/trialkylsilane. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Almenara N, Garralda MA, Lopez X, Matxain JM, Freixa Z, Huertos MA. Hydrogen Tunneling in Catalytic Hydrolysis and Alcoholysis of Silanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Naroa Almenara
- Universidad del País Vasco: Universidad del Pais Vasco Química Aplicada SPAIN
| | - Maria A. Garralda
- Universidad del País Vasco: Universidad del Pais Vasco Química Aplicada SPAIN
| | - Xabier Lopez
- Universidad del País Vasco: Universidad del Pais Vasco Quimica Fisica SPAIN
| | - Jon M. Matxain
- Universidad del País Vasco: Universidad del Pais Vasco Quimica Fisica SPAIN
| | - Zoraida Freixa
- Universidad del País Vasco: Universidad del Pais Vasco Quimica Aplicada SPAIN
| | - Miguel A. Huertos
- Universidad del Pais Vasco Química Aplicada Avda. Manuel de Lardizabal, 3 20018 San Sebastián SPAIN
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18
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Molinillo P, Lacroix B, Vattier F, Rendón N, Suárez A, Lara P. Reduction of N 2O with hydrosilanes catalysed by RuSNS nanoparticles. Chem Commun (Camb) 2022; 58:7176-7179. [PMID: 35670417 DOI: 10.1039/d2cc01470j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of RuSNS nanoparticles, prepared by decomposition of Ru(COD)(COT) with H2 in the presence of an SNS ligand, have been found to catalyse the reduction of the greenhouse gas N2O to N2 employing different hydrosilanes.
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Affiliation(s)
- Pablo Molinillo
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Bertrand Lacroix
- Department of Material Science and Metallurgic Engineering, and Inorganic Chemistry, University of Cádiz, Spain.,IMEYMAT: Institute of Research on Electron Microscopy and Materials of the University of Cádiz, Spain
| | - Florencia Vattier
- Instituto de Ciencia de Materiales de Sevilla, CSIC-Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Nuria Rendón
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Andrés Suárez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Patricia Lara
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), CSIC and Universidad de Sevilla. Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
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19
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Kim EE, Kononevich YN, Dyuzhikova YS, Ionov DS, Khanin DA, Nikiforova GG, Shchegolikhina OI, Vasil’ev VG, Muzafarov AM. Cross-Linked Luminescent Polymers Based on β-Diketone-Modified Polysiloxanes and Organoeuropiumsiloxanes. Polymers (Basel) 2022; 14:polym14132554. [PMID: 35808598 PMCID: PMC9269094 DOI: 10.3390/polym14132554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 01/23/2023] Open
Abstract
Nowadays, luminescent materials attract wide attention due to their valuable characteristics and broad area of potential application. Luminescent silicone-based polymers possess unique properties, such as flexibility, hydrophobicity, thermal and chemical stabilities, etc., which allow them to be utilized in various fields, such as optoelectronics, solid-state lasers, luminescent solar concentrators, sensors, and others. In the present work, a metal-ligand interaction approach was applied to obtain new cross-linked luminescent polymers based on multiligand polysiloxanes with grafted β-diketone fragments and organoeuropiumsiloxanes containing various organic substituents. Organoeuropiumsiloxanes were utilized as a source of Eu3+ ions due to their compatibility with the silicon matrix. All synthesized polymers were fully characterized and their physicochemical, mechanical, self-healing, optical, and thermal properties were studied.
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Affiliation(s)
- Eleonora E. Kim
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
| | - Yuriy N. Kononevich
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
- Correspondence: (Y.N.K.); (A.M.M.)
| | - Yulia S. Dyuzhikova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
| | - Dmitry S. Ionov
- Photochemistry Center, FSRC “Crystallography and Photonics”, Russian Academy of Sciences, 119421 Moscow, Russia;
| | - Dmitry A. Khanin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
| | - Galina G. Nikiforova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
| | - Olga I. Shchegolikhina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
| | - Viktor G. Vasil’ev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
| | - Aziz M. Muzafarov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia; (E.E.K.); (Y.S.D.); (D.A.K.); (G.G.N.); (O.I.S.); (V.G.V.)
- N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia
- Correspondence: (Y.N.K.); (A.M.M.)
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20
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Moraru IT, Teleanu F, Silaghi-Dumitrescu L, Nemes G. Offsets between hyperconjugations, p→d donations and Pauli repulsions impact the bonding of E-O-E systems. Case study on elements of Group 14. Phys Chem Chem Phys 2022; 24:13217-13228. [PMID: 35593709 DOI: 10.1039/d2cp00869f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nature of the E-O chemical bond (E = C, Si, Ge, Sn) is investigated in a wide range of model derivatives, such as oxonium cations, hydrogenated/methylated/fluorinated/chlorinated ethers and acyclic oligomers incorporating the E-O-E moiety. By means of density functional theory (DFT) calculations and natural bond orbital (NBO) techniques, we propose a bonding mechanism that explains the structural contrast between the organic and the inorganic counterparts of all these derivatives: the interplay between stabilizing interactions like LP(O)→σ*(E-X) hyperconjugations and LP(O)→d(E) donations with LP(O)⋯σ(E-X) vicinal Pauli repulsions (X = H, C, O, F, Cl) dictates the equilibrium structures in terms of E-O-E angles and E-O bond lengths. In addition, the present work represents the first study of oxonium ions that describes the structural discrepancies among organic derivatives and their heavier analogues. Another novel outcome for ethers and oligomers is that the two non-equivalent lone pair electrons (LPs) at the oxygen atoms impact in different manners the geometries of such derivatives, i.e. the s/p LP is correlated with the bending behaviour of the E-O-E units, while the pure p LP mainly dictates the short E-O bond distances of inorganic derivatives. Lastly, we evaluate the impact of the number of electronegative substituents, e.g. F, Cl or OEH3 groups, on the bond patterns developed for hydrogenated or methylated ethers.
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Affiliation(s)
- Ionut-Tudor Moraru
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania.
| | - Florin Teleanu
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania.
| | - Luminita Silaghi-Dumitrescu
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania.
| | - Gabriela Nemes
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania.
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21
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Scarpi-Luttenauer M, Mobian P, Barloy L. Synthesis, structure and functions of discrete titanium-based multinuclear architectures. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214439] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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22
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Synthesis of Novel Luminescent Double-Decker Silsesquioxanes Based on Partially Condensed TetraSilanolPhenyl POSS and Tb3+/Eu3+ Lanthanide Ions. Processes (Basel) 2022. [DOI: 10.3390/pr10040758] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In this study, novel lanthanide-containing double-decker polyhedral oligomeric silsesquioxanes (POSS) were prepared by combining the partially condensed TetraSilanolPhenyl POSS with terbium (Tb3+) and europium (Eu3+) ions. This open-cage POSS possesses four diametrically opposite silanol groups that are able to coordinate, under mild conditions, different luminescent ions through a simple corner-capping method. The two metal-containing POSS functionalized with Tb3+ and with an equimolar combination of Tb3+ and Eu3+ show a completely condensed structure with different luminescent properties. Their emission features depend on the chemical nature of the metal ions incorporated in the framework. An improved stokes shift was detected in the bimetallic compound containing both the Tb3+ and Eu3+ ions, promoted by the occurrence of a Tb3+→Eu3+ energy transfer mechanism. These characteristics identify this metal-functionalized silica platform as a potential candidate for the development of novel luminescent devices.
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23
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Synthesis, reactivity and X-ray crystal structure of tris(pentafluorophenyl)silanol (C6F5)3SiOH. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Liu Y, Chaiprasert T, Ouali A, Unno M. Well-defined cyclic silanol derivatives. Dalton Trans 2022; 51:4227-4245. [PMID: 35191910 DOI: 10.1039/d1dt04270j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Cyclic silanol derivatives (CSDs), possessing siloxane rings consisting of T-unit silicon and oxygen atoms, are considered efficient precursors for the preparation of versatile well-defined building blocks of hybrid materials such as cyclic, cage- or ladder-type SQs. This review provides an outline of the main synthetic routes to numerous stereoregular CSDs with different sizes of siloxane rings since the first example of CSDs reported by Brown et al. in 1965. The typical reaction conditions and chemical shifts of 29Si NMR of all mentioned CSDs in this review are summarized in tables and schemes to recapitulate the state of the art. The synthesis of all-cis-cyclotetrasiloxanes (T4), the most investigated CSDs, and their functionalization by different organic reactions to access various all-cis-T4 with functional groups are methodically presented. Moreover, the potential of CSDs in multiple application fields is discussed to show the possible research directions of this family of compounds in the future.
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Affiliation(s)
- Yujia Liu
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan.
| | - Thanawat Chaiprasert
- Department of Chemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road Pathum Wan Wang Mai, Bangkok 10330, Thailand
| | - Armelle Ouali
- ICGM, Univ Montpellier, CNRS, ENSCM, 1919 route de Mende, Montpellier 34293 Cedex 5, France
| | - Masafumi Unno
- Department of Chemistry and Chemical Biology, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan.
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25
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Zhou J, Hou W, Liu X, Astruc D. Pd, Rh and Ru Nanohybrid-catalyzed Tetramethyldisiloxane Hydroysis for H2 Generation, Nitrophenol Reduction and Suzuki-Miyaura Cross-Coupling. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00035k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrolysis of tetramethyldisiloxane, which is a silicone industrial refuse, provides a convenient method to generates H2 on demand. Herein, the highly selective and efficient 2D graphene-like carbon nanosheets (GCN)...
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26
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Guo P, Cheng LC, He X, Ye KY. Cobalt-catalyzed highly selective hydroxylation of organohydrosilanes and hydrosiloxanes. Org Chem Front 2022. [DOI: 10.1039/d2qo01294d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highly selective and scalable dehydrogenative hydroxylation of hydrosilanes, featuring a low loading of the Earth-abundant cobalt catalyst, water as the green oxidant, and good generality for various hydrosilanes, is reported.
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Affiliation(s)
- Peng Guo
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Ling-Chao Cheng
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Xinglei He
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Ke-Yin Ye
- Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), College of Chemistry, Fuzhou University, Fuzhou 350108, China
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27
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Prapakaran T, Kuppuswamy S, Murugavel R. Supramolecular aggregation in sterically encumbered monoarylphosphates and their H-bonded adducts: multigram synthesis of elusive 2,6-di- tert-butylphenyl phosphate. CrystEngComm 2022. [DOI: 10.1039/d2ce00172a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A viable synthetic methodology has been developed for multigram synthesis of bulky 2,6-di-tert-butyphenyl phosphate; its supramolecular association behaviour and those of adducts formed with N-bases is established.
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Affiliation(s)
- T. Prapakaran
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - S. Kuppuswamy
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ramaswamy Murugavel
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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28
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Zhu H, Jiang W, Wang J, Chen Y, Chen Z, Li J, Jiang L, Peng Y. Cuproussiloxane of Self-assemblies Cu20O20Si10Me10R10 and Cu24O24Si12Me12R12 and the Catalytic Property. Dalton Trans 2022; 51:12432-12435. [DOI: 10.1039/d2dt01018f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cuproussiloxane (1) is prepared from reaction of silanediol R(Me)Si(OH)2 (R = N(SiMe3)(2,6-iPr2C6H3)) and (CuMes)4 (Mes = 2,4,6-Me3C6H2), which crystalizes into two self-assemblies Cu24O24Si12Me12R12 ([(CuO)2Si(Me)R]12, 1a) and Cu20O20Si10Me10R10 ([(CuO)2Si(Me)R]10, 1b). 1a...
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29
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Astakhov GS, Khrustalev VN, Dronova MS, Gutsul EI, Korlyukov AA, Gelman D, Zubavichus YV, Novichkov DA, Trigub AL, Shubina ES, Bilyachenko AN. Cage-like manganesesilsesquioxanes: features of their synthesis, unique structure, and catalytic activity in oxidative amidations. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01054b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of Mn-based cage-like silsesquioxanes (and complexes with 1,10-phenanthroline) exhibits unique types of molecular architectures and catalytic activity in oxidative amidation reactions.
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Affiliation(s)
- Grigorii S. Astakhov
- Peoples’ Friendship University of Russia, Miklukho-Maklay Street, 6, 117198 Moscow, Russia
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Victor N. Khrustalev
- Peoples’ Friendship University of Russia, Miklukho-Maklay Street, 6, 117198 Moscow, Russia
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
| | - Marina S. Dronova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Evgenii I. Gutsul
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Alexander A. Korlyukov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
- Pirogov Russian National Research Medical University, Ostrovitianov Str., 1, Moscow 117997, Russia
| | - Dmitri Gelman
- Institute of Chemistry, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Yan V. Zubavichus
- Boreskov Institute of Catalysis SB RAS, prosp. Akad. Lavrentieva, 5, Novosibirsk 630090, Russia
| | - Daniil A. Novichkov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Bld. 3, Moscow 119991, Russian Federation
| | - Alexander L. Trigub
- National Research Center “Kurchatov Institute”, Akademika Kurchatova pl., 1, 123182 Moscow, Russia
| | - Elena S. Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
| | - Alexey N. Bilyachenko
- Peoples’ Friendship University of Russia, Miklukho-Maklay Street, 6, 117198 Moscow, Russia
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
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30
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Mortis A, Maichle-Mössmer C, Anwander R. Yttrium tris(trimethylsilylmethyl) complexes grafted onto MCM-48 mesoporous silica nanoparticles. Dalton Trans 2021; 51:1070-1085. [PMID: 34939637 DOI: 10.1039/d1dt03876a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of tris(trimethylsilylmethyl) yttrium donor adduct complexes was synthesized and fully characterized by X-ray diffraction, 1H/13C/29Si/31P/89Y heteronuclear NMR and FTIR spectroscopies as well as elemental analyses. Treatment of Y(CH2SiMe3)3(thf)x with various donors Do led to complete (Do = TMEDA, DMAP) and partial displacement of THF (Do = NHCiPr, DMPE). Exceptionally large 89Y NMR shifts to low field were observed for the new complexes. Complexes Y(CH2SiMe3)3(tmeda) and Y(CH2SiMe3)3(dmpe)(thf) were chosen to perform surface organometallic chemistry, due to a comparatively higher thermal stability and the availability of the 31P nucleus as a spectroscopic probe, respectively. Mesoporous nanoparticles of the MCM-48-type were synthesized and used as a 3rd generation silica support. The parent and hybrid materials were characterized using X-ray powder diffraction, solid-state-NMR spectroscopy, DRIFTS, elemental analyses, N2-physisorption, and scanning electron microscopy (SEM). The presence of surface-bound yttrium alkyl moieties was further proven by the reaction with carbon dioxide. Quantification of the surface silanol population by means of HN(SiHMe2)2-promoted surface silylation is shown to be superior to titration with lithium alkyl LiCH2SiMe3.
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Affiliation(s)
- Alexandros Mortis
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany.
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31
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Feige F, Kögel JF, Lork E, Beckmann J. Thermally stable polyfluorinated monoalkoxysilanetriols and dialkoxydisiloxanetetrols. Dalton Trans 2021; 50:18186-18193. [PMID: 34860226 DOI: 10.1039/d1dt03389a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of the polyfluorinated lithium triarylmethanolates Ar3COLi (Ar = C6F5, 3,5-(CF3)2C6H3) with SiCl4 provided the monosubstituted products Ar3COSiCl3 (1a, Ar = C6F5; 1b, Ar = 3,5-(CF3)2C6H3). The hydrolysis of 1a and 1b produced the silanetriols Ar3COSi(OH)3 (2a, Ar = C6F5; 2b, Ar = 3,5-(CF3)2C6H3) without the aid of an HCl scavenger. The reaction of two equivalents of Ar3COLi (Ar = C6F5, 3,5-(CF3)2C6H3) with (Cl3Si)2O afforded the disubstituted products [(C6F5)3COSiCl2]2O (3a) and {[(3,5-(CF3)2C6H3)3CO]SiCl2}2O (3b), the hydrolysis of which gave the corresponding disiloxanetetraols [(C6F5)3COSi(OH)2]2O (4a) and [(3,5-(CF3)2C6H3)3COSi(OH)2]2O (4b). At high concentrations in the presence of HCl, 2b undergoes controlled condensation to yield 4b. In the solid-state, 2a, 4a and 4b are mainly associated by hydrogen bonds of the type SiO-H⋯O(H)Si whereas the competing SiO-H⋯O(C)Si type was not observed.
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Affiliation(s)
- Felix Feige
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359 Bremen, Germany.
| | - Julius F Kögel
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359 Bremen, Germany.
| | - Enno Lork
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359 Bremen, Germany.
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359 Bremen, Germany.
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32
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Kim DS, Lee HG. Formation of the Tertiary Sulfonamide C(sp 3)-N Bond Using Alkyl Boronic Ester via Intramolecular and Intermolecular Copper-Catalyzed Oxidative Cross-Coupling. J Org Chem 2021; 86:17380-17394. [PMID: 34762422 DOI: 10.1021/acs.joc.1c01759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthetic strategy for the formation of C(sp3)-N bonds, particularly through a copper-catalyzed oxidative cross-coupling, is rare. Herein, we report a novel synthetic approach for the preparation of tertiary sulfonamides via copper-catalyzed intra- and intermolecular oxidative C(sp3)-N cross-coupling reactions. This method allows the utilization of the readily available C(sp3)-based pinacol boronate as a substrate and the tolerance of a wide range of functional groups under mild reaction conditions. The success of this strategy relies on the unprecedented additive effects of silanol and NaIO4.
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Affiliation(s)
- Dong Sun Kim
- Department of Chemistry, College of National Science, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hong Geun Lee
- Department of Chemistry, College of National Science, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Republic of Korea
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33
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Feige F, Malaspina LA, Rychagova E, Ketkov S, Grabowsky S, Hupf E, Beckmann J. Perfluorinated Trialkoxysilanol with Dramatically Increased Brønsted Acidity. Chemistry 2021; 27:15898-15902. [PMID: 34550614 PMCID: PMC9292728 DOI: 10.1002/chem.202103177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Indexed: 11/17/2022]
Abstract
The Brønsted acidity of the perfluorinated trialkoxysilanol {(F3C)3CO}3SiOH is more than 13 orders of magnitude higher than that of orthosilicic acid, Si(OH)4, and even more for most previously known silanols. It is easily deprotonated by simple amines and pyridines to give the conjugate silanolates [OSi{OC(CF3)3}3]−, which possess extremely short Si−O bonds, comparable to those of silanones.
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Affiliation(s)
- Felix Feige
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany
| | - Lorraine A Malaspina
- Departement für Chemie, Biochemie und Pharmazie, Universität Bern, Freiestrasse 3, 3012, Bern, Schweiz
| | - Elena Rychagova
- G. A. Razuvaev Institute of Organometallic Chemistry RAS, 49 Tropinin St., 603950, Nizhny Novgorod, Russian Federation
| | - Sergey Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry RAS, 49 Tropinin St., 603950, Nizhny Novgorod, Russian Federation
| | - Simon Grabowsky
- Departement für Chemie, Biochemie und Pharmazie, Universität Bern, Freiestrasse 3, 3012, Bern, Schweiz
| | - Emanuel Hupf
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany
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34
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Nigoghossian K, Kulakova AN, Félix G, Khrustalev VN, Shubina ES, Long J, Guari Y, Sene S, Carlos LD, Bilyachenko AN, Larionova J. Temperature sensing in Tb 3+/Eu 3+-based tetranuclear silsesquioxane cages with tunable emission. RSC Adv 2021; 11:34735-34741. [PMID: 35494783 PMCID: PMC9042691 DOI: 10.1039/d1ra06755a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/18/2021] [Indexed: 12/19/2022] Open
Abstract
New luminescent cage-like tetranuclear silsesquioxanes [NEt4][(Ph4Si4O8)2(Tb3Eu)(NO3)4(OH)(EtOH)3(H2O)]·4(EtOH) (1) and [NEt4]2[(Ph4Si4O8)2(Tb2Eu2)(NO3)6(EtOH)2(MeCN)2]·4(MeCN) (2) present a tunable thermosensitive Tb3+-to-Eu3+ energy transfer driven by Tb3+ and Eu3+ emission and may be used as temperature sensors operating in the range 41–100 °C with excellent linearity (R2 = 0.9990) and repeatability (>95%). The thermometer performance was evidenced by the maximum relative sensitivity of 0.63% °C−1 achieved at 68 °C. Tetranuclear silsesquioxane cages with tunable thermosensitive Tb3+-to-Eu3+ energy transfer were used for temperature sensing based on the Tb3+-to-Eu3+ emission intensity ratio (LIR) with excellent linearity and sensitivity.![]()
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Affiliation(s)
| | - Alena N Kulakova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences Vavilova str., 28 Moscow 119991 Russia .,Peoples' Friendship University of Russia (RUDN) Miklukho-Maklay Str., 6 Moscow 117198 Russia
| | - Gautier Félix
- ICGM, Univ. Montpellier, CNRS, ENSCM Montpellier France
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia (RUDN) Miklukho-Maklay Str., 6 Moscow 117198 Russia.,Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences Leninsky Prospect 47 Moscow 119991 Russia
| | - Elena S Shubina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences Vavilova str., 28 Moscow 119991 Russia
| | - Jérôme Long
- ICGM, Univ. Montpellier, CNRS, ENSCM Montpellier France
| | - Yannick Guari
- ICGM, Univ. Montpellier, CNRS, ENSCM Montpellier France
| | - Saad Sene
- ICGM, Univ. Montpellier, CNRS, ENSCM Montpellier France
| | - Luís D Carlos
- Phantom-g, Physics Department and CICECO - Aveiro Institute of Materials, University of Aveiro Aveiro 3810-193 Portugal
| | - Alexey N Bilyachenko
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences Vavilova str., 28 Moscow 119991 Russia .,Peoples' Friendship University of Russia (RUDN) Miklukho-Maklay Str., 6 Moscow 117198 Russia
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35
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Georg I, Bursch M, Endeward B, Bolte M, Lerner HW, Grimme S, Wagner M. The power of trichlorosilylation: isolable trisilylated allyl anions, allyl radicals, and allenyl anions. Chem Sci 2021; 12:12419-12428. [PMID: 34603672 PMCID: PMC8480423 DOI: 10.1039/d1sc03958j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 08/13/2021] [Indexed: 11/21/2022] Open
Abstract
Treatment of hexachloropropene (Cl2C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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C(Cl)–CCl3) with Si2Cl6 and [nBu4N]Cl (1 : 4 : 1) in CH2Cl2 results in a quantitative conversion to the trisilylated, dichlorinated allyl anion salt [nBu4N][Cl2CC(SiCl3)–C(SiCl3)2] ([nBu4N][1]). Tetrachloroallene Cl2CCCCl2 was identified as the first intermediate of the reaction cascade. In the solid state, [1]− adopts approximate Cs symmetry with a dihedral angle between the planes running through the olefinic and carbanionic fragments of [1]− of CC–Si//Si–C–Si = 78.3(1)°. One-electron oxidation of [nBu4N][1] with SbCl5 furnishes the distillable blue radical 1˙. The neutral propene Cl2CC(SiCl3)–C(SiCl3)2H (2) was obtained by (i) protonation of [1]− with HOSO2CF3 (HOTf) or (ii) H-atom transfer to 1˙ from 1,4-cyclohexadiene. Quantitative transformation of all three SiCl3 substituents in 2 to Si(OMe)3 (2OMe) or SiMe3 (2Me) substituents was achieved by using MeOH/NMe2Et or MeMgBr in CH2Cl2 or THF, respectively. Upon addition of 2 equiv. of tBuLi, 2Me underwent deprotonation with subsequent LiCl elimination, 1,2-SiMe3 migration and Cl/Li exchange to afford the allenyl lithium compound Me3Si(Li)CCC(SiMe3)2 (Li[4]), which is an efficient building block for the introduction of Me, SiMe3, or SnMe3 (5) groups. The trisilylated, monochlorinated allene Cl3Si(Cl)CCC(SiCl3)2 (6), was obtained from [nBu4N][1] through Cl−-ion abstraction with AlCl3 and rearrangement in CH2Cl2 (1˙ forms as a minor side product, likely because the system AlCl3/CH2Cl2 can also act as a one-electron oxidant). Treatment of hexachloropropene (Cl2CC(Cl)–CCl3) with Si2Cl6 and [nBu4N]Cl (1 : 4 : 1) in CH2Cl2 results in a quantitative conversion to the trisilylated, dichlorinated allyl anion salt [nBu4N][Cl2CC(SiCl3)–C(SiCl3)2] ([nBu4N][1]).![]()
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Affiliation(s)
- Isabelle Georg
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt (Main) Germany
| | - Markus Bursch
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn Beringstraße 4 53115 Bonn Germany
| | - Burkhard Endeward
- Institut für Physikalische und Theoretische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Str. 7 D-60438 Frankfurt (Main) Germany
| | - Michael Bolte
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt (Main) Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt (Main) Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn Beringstraße 4 53115 Bonn Germany
| | - Matthias Wagner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt (Main) Germany
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36
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Achternbosch M, Zibula L, Kirchhoff JL, Bauer JO, Strohmann C. Primary Amine Functionalization of Alkoxysilanes: Synthesis, Selectivity, and Mechanistic Insights. Inorg Chem 2021; 60:11562-11568. [PMID: 34240858 DOI: 10.1021/acs.inorgchem.1c01529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a highly selective substitution of silicon-bound methoxy groups by primary lithium amides. This unusual reactivity is possible because of the formation of particularly stable lithium methoxide, which compensates for the decreased Si-N bond enthalpy compared to Si-O bonds. In contrast to substitution reactions on halosilanes, highly selective monosubstitutions under mild conditions are possible, even in the presence of further reactive methoxy groups. A combination of experiments and density functional theory calculations was carried out in order to get an extensive understanding of the reaction. The calculations reveal a possible reaction mechanism with considerably low activation barriers and the entry of the nucleophile to be the rate-determining step. The low activation energies allow for the substitutions to be carried out at low temperatures, therefore preventing side reactions from occurring. The presented investigations expand the view of fundamental transformation processes on silicon and give access to a wide variety of functionalized silicon-based building blocks for various fields of chemistry.
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Affiliation(s)
- Moritz Achternbosch
- Institut für Anorganische Chemie, Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund Otto-Hahn-Strasse 6, D-44227 Dortmund, Germany
| | - Lukas Zibula
- Institut für Anorganische Chemie, Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund Otto-Hahn-Strasse 6, D-44227 Dortmund, Germany
| | - Jan-Lukas Kirchhoff
- Institut für Anorganische Chemie, Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund Otto-Hahn-Strasse 6, D-44227 Dortmund, Germany
| | - Jonathan O Bauer
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstrasse 31, D-93053 Regensburg, Germany
| | - Carsten Strohmann
- Institut für Anorganische Chemie, Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund Otto-Hahn-Strasse 6, D-44227 Dortmund, Germany
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Astakhov GS, Levitsky MM, Zubavichus YV, Khrustalev VN, Titov AA, Dorovatovskii PV, Smol'yakov AF, Shubina ES, Kirillova MV, Kirillov AM, Bilyachenko AN. Cu 6- and Cu 8-Cage Sil- and Germsesquioxanes: Synthetic and Structural Features, Oxidative Rearrangements, and Catalytic Activity. Inorg Chem 2021; 60:8062-8074. [PMID: 33979518 DOI: 10.1021/acs.inorgchem.1c00586] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study reports intriguing features in the self-assembly of cage copper(II) silsesquioxanes in the presence of air. Despite the wide variation of solvates used, a series of prismatic hexanuclear Cu6 cages (1-5) were assembled under mild conditions. In turn, syntheses at higher temperatures are accompanied by side reactions, leading to the oxidation of solvates (methanol, 1-butanol, and tetrahydrofuran). The oxidized solvent derivatives then specifically participate in the formation of copper silsesquioxane cages, allowing the isolation of several unusual Cu8-based (6 and 7) and Cu6-based (8) complexes. When 1,4-dioxane was applied as a reaction medium, deep rearrangements occurred (with a total elimination of silsesquioxane ligands), causing the formation of mononuclear copper(II) compounds bearing oxidized dioxane fragments (9 and 11) or a formate-driven 1D coordination polymer (10). Finally, a "directed" self-assembly of sil- and germsesquioxanes from copper acetate (or formate) resulted in the corresponding acetate (or formate) containing Cu6 cages (12 and 13) that were isolated in high yields. The structures of all of the products 1-13 were established by single-crystal X-ray diffraction, mainly based on the use of synchrotron radiation. Moreover, the catalytic activity of compounds 12 and 13 was evaluated toward the mild homogeneous oxidation of C5-C8 cycloalkanes with hydrogen peroxide to form a mixture of the corresponding cyclic alcohols and ketones.
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Affiliation(s)
- Grigorii S Astakhov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (RAS), Vavilov Strasse 28, Moscow 119991, Russia.,Peoples' Friendship University of Russia, Miklukho-Maklay Street 6, Moscow 117198, Russia
| | - Mikhail M Levitsky
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (RAS), Vavilov Strasse 28, Moscow 119991, Russia
| | - Yan V Zubavichus
- Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences (SB RAS) Prosp. Akad., Lavrentieva 5, Novosibirsk 630090, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Miklukho-Maklay Street 6, Moscow 117198, Russia.,Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences (RAS), Leninsky Prospect 47, Moscow 119991, Russia
| | - Aleksei A Titov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (RAS), Vavilov Strasse 28, Moscow 119991, Russia
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", Akademika Kurchatova pl. 1, Moscow 123182, Russia
| | - Alexander F Smol'yakov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (RAS), Vavilov Strasse 28, Moscow 119991, Russia.,Plekhanov Russian University of Economics, Stremyanny per. 36, Moscow 117997, Russia
| | - Elena S Shubina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (RAS), Vavilov Strasse 28, Moscow 119991, Russia
| | - Marina V Kirillova
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
| | - Alexander M Kirillov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, Lisbon 1049-001, Portugal
| | - Alexey N Bilyachenko
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (RAS), Vavilov Strasse 28, Moscow 119991, Russia
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Lv H, Laishram RD, Chen J, Khan R, Zhu Y, Wu S, Zhang J, Liu X, Fan B. Photocatalyzed cross-dehydrogenative coupling of silanes with alcohols and water. Chem Commun (Camb) 2021; 57:3660-3663. [PMID: 33724277 DOI: 10.1039/d1cc00129a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An efficient method for the dehydrogenative coupling of silanes with alcohols under photocatalysis was developed. The reaction proceeded in the presence of Ru(bpy)3Cl2 (0.5 mol%) under visible light irradiation in acetonitrile at room temperature. The developed methodology was also applicable for the synthesis of silanols using water as a coupling partner.
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Affiliation(s)
- Haiping Lv
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Yuehua Street, Kunming, 650500, China.
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Nahrstedt V, Raauf A, Hegemann C, Brune V, Schläfer J, Mathur S. Unusual Reactivity of Silicon Grease Towards Metal Alkoxides: Serendipity for Structural Chemistry. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000474] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vanessa Nahrstedt
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Aida Raauf
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Corinna Hegemann
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Veronika Brune
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Johannes Schläfer
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
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de Almeida LD, Wang H, Junge K, Cui X, Beller M. Recent Advances in Catalytic Hydrosilylations: Developments beyond Traditional Platinum Catalysts. Angew Chem Int Ed Engl 2021; 60:550-565. [PMID: 32668079 PMCID: PMC7839722 DOI: 10.1002/anie.202008729] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Indexed: 12/26/2022]
Abstract
Hydrosilylation reactions, which allow the addition of Si-H to C=C/C≡C bonds, are typically catalyzed by homogeneous noble metal catalysts (Pt, Rh, Ir, and Ru). Although excellent activity and selectivity can be obtained, the price, purification, and metal residues of these precious catalysts are problems in the silicone industry. Thus, a strong interest in more sustainable catalysts and for more economic processes exists. In this respect, recently disclosed hydrosilylations using catalysts based on earth-abundant transition metals, for example, Fe, Co, Ni, and Mn, and heterogeneous catalysts (supported nanoparticles and single-atom sites) are noteworthy. This minireview describes the recent advances in this field.
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Affiliation(s)
| | - Hongli Wang
- State Key Laboratory for Oxo Synthesis and Selective OxidationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesNo. 18, Tianshui Middle RoadLanzhou730000China
| | - Kathrin Junge
- Leibniz-Institute for CatalysisAlbert-Einstein-Str. 29a18059RostockGermany
| | - Xinjiang Cui
- State Key Laboratory for Oxo Synthesis and Selective OxidationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesNo. 18, Tianshui Middle RoadLanzhou730000China
| | - Matthias Beller
- Leibniz-Institute for CatalysisAlbert-Einstein-Str. 29a18059RostockGermany
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41
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Dombrowski JP, Ziegler MS, Phadke NM, Mansoor E, Levine DS, Witzke RJ, Head-Gordon M, Bell AT, Tilley TD. Siloxyaluminate and Siloxygallate Complexes as Models for Framework and Partially Hydrolyzed Framework Sites in Zeolites and Zeotypes. Chemistry 2021; 27:307-315. [PMID: 32926472 DOI: 10.1002/chem.202002926] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/02/2020] [Indexed: 11/07/2022]
Abstract
Anionic molecular models for nonhydrolyzed and partially hydrolyzed aluminum and gallium framework sites on silica, M[OSi(OtBu)3 ]4 - and HOM[OSi(OtBu)3 ]3 - (where M=Al or Ga), were synthesized from anionic chlorides Li{M[OSi(OtBu)3 ]3 Cl} in salt metathesis reactions. Sequestration of lithium cations with [12]crown-4 afforded charge-separated ion pairs composed of monomeric anions M[OSi(OtBu)3 ]4 - with outer-sphere [([12]crown-4)2 Li]+ cations, and hydroxides {HOM[OSi(OtBu)3 ]3 } with pendant [([12]crown-4)Li]+ cations. These molecular models were characterized by single-crystal X-ray diffraction, vibrational spectroscopy, mass spectrometry and NMR spectroscopy. Upon treatment of monomeric [([12]crown-4)Li]{HOM[OSi(OtBu)3 ]3 } complexes with benzyl alcohol, benzyloxide complexes were formed, modeling a possible pathway for the formation of active sites for Meerwin-Ponndorf-Verley (MPV) transfer hydrogenations with Al/Ga-doped silica catalysts.
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Affiliation(s)
- James P Dombrowski
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Micah S Ziegler
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Neelay M Phadke
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Erum Mansoor
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.,Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Daniel S Levine
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.,Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Ryan J Witzke
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Martin Head-Gordon
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.,Kenneth S. Pitzer Center for Theoretical Chemistry, Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Alexis T Bell
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.,Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - T Don Tilley
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
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Hu H, Zhang W, Zhi T, Li J, Wen Y, Li F, Mei Y, Huang D. Genotypic Characteristics of Hepatoblastoma as Detected by Next Generation Sequencing and Their Correlation With Clinical Efficacy. Front Oncol 2021; 11:628531. [PMID: 34426785 PMCID: PMC8379014 DOI: 10.3389/fonc.2021.628531] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 07/20/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Hepatoblastoma (HB) is the most common malignant embryonic liver tumor type in children under 3 years of age. In the present study, the next generation sequencing (NGS) method was used to detect the genotype characteristics of HB and summarize the correlation between the common mutation genotypes noted in this disease and the clinical treatment and prognosis. The results may aid clinical prognosis and the successful application of targeted drugs. METHODS Initially, DNA was extracted from tumor tissue specimens and peripheral blood derived from 19 pediatric patients with HB. Subsequently, DNA panel and NGS methods were used to detect tumor diagnosis and the expression levels of treatment-associated genes, followed by the summary of genotype characteristics. In addition, in order to further assess the application of immunotherapy in HB, immunohistochemical detection of programmed cell death 1 ligand 1 (PDL1) was performed in combination with tumor mutation burden (TMB) and DNA mismatch repair status analysis. Furthermore, the clinical treatment effect and prognosis of the pediatric patients were statistically analyzed according to the characteristics of the genotype. Overall prognosis and prognostic analyses in different groups were performed by Kaplan-Meier and log-rank tests, respectively. Finally, expression validation and diagnostic analysis of commonly reported genes were performed in the GSE75271 dataset, which was obtained from the Gene Expression Omnibus (GEO) database. RESULTS In the present study, certain mutated genes, including nuclear factor erythroid 2-related factor 2 (NFE2L2), catenin β1 (CTNNB1), MYCN, tumor protein p53, axis inhibition protein 1 (AXIN1) and adenomatous polyposis coli (APC) were associated with the pathogenesis of HB. During TMB and DNA mismatch repair status analyses, pediatric patients had a low TMB. All of them did not present with microsatellite instability. The immunohistochemical results indicated lower expression levels of PDL1 in HB. The complete remission (CR) rate of pediatric patients in the gene abnormality group was lower than that of the non-reported disease-associated gene abnormality group. The 2-year overall survival rate and disease-free survival rate of 19 pediatric patients with HB were 72.1% and 42.4%, respectively. Receiver operating characteristic (ROC) analysis demonstrated that CTNNB1, NFE2L2, AXIN1, APC, MYCN and insulin growth factor 2 (IGF2) may be potential biomarkers that could be used for the diagnosis of HB. CONCLUSION The genotype changes in HB were more common and the CR rate of the pediatric patients with an altered genotype was lower than that of pediatric patients without an altered genotype. In addition, pediatric patients with HB exhibited lower TMB compared with adult patients. Moreover, the data indicated that CTNNB1, NFE2L2, AXIN1, APC, MYCN and IGF2 may be potential biomarkers that can be used for the diagnosis of HB.
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Loganathan P, Pillai RS, Jeevananthan V, David E, Palanisami N, Bhuvanesh NSP, Shanmugan S. Assembly of discrete and oligomeric structures of organotin double-decker silsesquioxanes: inherent stability studies. NEW J CHEM 2021. [DOI: 10.1039/d1nj03128g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Discrete and oligomeric organotin DDSQs have been synthesized and characterized, both experimentally and through computational study. The stability of these compounds remains intrigued with the organization of their structure in the crystal lattice.
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Affiliation(s)
- Pushparaj Loganathan
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur-603203, Tamil Nadu, India
| | - Renjith S. Pillai
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur-603203, Tamil Nadu, India
- Department of Chemistry, Christ University, Bangalore-56029, Karnataka, India
| | - Velusamy Jeevananthan
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur-603203, Tamil Nadu, India
| | - Ezhumalai David
- Centre for Functional Materials, Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamil Nadu, India
| | - Nallasamy Palanisami
- Centre for Functional Materials, Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore-632014, Tamil Nadu, India
| | - Nattamai S. P. Bhuvanesh
- X-ray Diffraction Laboratory, Department of Chemistry, Texas A&M University, College Station, TX 77842, USA
| | - Swaminathan Shanmugan
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur-603203, Tamil Nadu, India
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Almeida LD, Wang H, Junge K, Cui X, Beller M. Recent Advances in Catalytic Hydrosilylations: Developments beyond Traditional Platinum Catalysts. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008729] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Hongli Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences No. 18, Tianshui Middle Road Lanzhou 730000 China
| | - Kathrin Junge
- Leibniz-Institute for Catalysis Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Xinjiang Cui
- State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences No. 18, Tianshui Middle Road Lanzhou 730000 China
| | - Matthias Beller
- Leibniz-Institute for Catalysis Albert-Einstein-Str. 29a 18059 Rostock Germany
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Kulakova AN, Bilyachenko AN, Levitsky MM, Khrustalev VN, Shubina ES, Felix G, Mamontova E, Long J, Guari Y, Larionova J. New Luminescent Tetranuclear Lanthanide-Based Silsesquioxane Cage-Like Architectures. Chemistry 2020; 26:16594-16598. [PMID: 32761637 DOI: 10.1002/chem.202003351] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Indexed: 12/20/2022]
Abstract
The synthesis, structure, magnetic, and luminescence properties investigations of four new cage-like lanthanide-based silsesquioxanes (Cat)2 [(PhSiO1.5 )8 (LnO1.5 )4 (O)(NO2.5 )6 (EtOH)2 (MeCN)2 ] (where Cat+ =Et4 N+ , PPh4 P+ and Ln3+ =Eu3+ , Tb3+ and (Ph4 P)4 [(PhSiO1.5 )8 (TbO1.5 )4 (O)2 (NO2.5 )8 ]⋅10MeCN are reported. They present an unusual prism-like topology of cage architectures and lanthanide-characteristic emission, which makes them the first luminescent cage-like lanthanide silsesquioxanes. One of the Tb3+ -based cages presents a magnetic spin-flip transition.
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Affiliation(s)
- Alena N Kulakova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str., 28, Moscow, 119991, Russia.,Peoples' Friendship University of Russia, Miklukho-Maklay Str., 6, 117198, Moscow, Russia.,ICGM, ENSCM, CNRS, Univ. Montpellier, Montpellier, France
| | - Alexey N Bilyachenko
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str., 28, Moscow, 119991, Russia.,Peoples' Friendship University of Russia, Miklukho-Maklay Str., 6, 117198, Moscow, Russia
| | - Mikhail M Levitsky
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str., 28, Moscow, 119991, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Miklukho-Maklay Str., 6, 117198, Moscow, Russia.,Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Elena S Shubina
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova str., 28, Moscow, 119991, Russia
| | - Gautier Felix
- ICGM, ENSCM, CNRS, Univ. Montpellier, Montpellier, France
| | | | - Jérôme Long
- ICGM, ENSCM, CNRS, Univ. Montpellier, Montpellier, France
| | - Yannick Guari
- ICGM, ENSCM, CNRS, Univ. Montpellier, Montpellier, France
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Moraru IT, Teleanu F, Nemes G. Theoretical Insights into the Structural Differences between Organic and Inorganic Amines/Ethers. J Phys Chem A 2020; 124:8246-8253. [DOI: 10.1021/acs.jpca.0c07093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ionut-Tudor Moraru
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania
| | - Florin Teleanu
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania
- College for Advanced Performance Studies, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania
| | - Gabriela Nemes
- Faculty of Chemistry and Chemical Engineering, Department of Chemistry, Babeş-Bolyai University, 1 M. Kogalniceanu Street, RO-400084 Cluj-Napoca, Romania
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Zibula L, Achternbosch M, Wattenberg J, Otte F, Strohmann C. Influences of Steric Factors on the Reactivity and Structure of Diorganoalkoxysilylamides. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lukas Zibula
- Institute of Inorganic Chemistry TU Dortmund University Otto‐Hahn‐Str. 6 44227 Dortmund Germany
| | - Moritz Achternbosch
- Institute of Inorganic Chemistry TU Dortmund University Otto‐Hahn‐Str. 6 44227 Dortmund Germany
| | - Jonathan Wattenberg
- Institute of Inorganic Chemistry TU Dortmund University Otto‐Hahn‐Str. 6 44227 Dortmund Germany
| | - Felix Otte
- Institute of Inorganic Chemistry TU Dortmund University Otto‐Hahn‐Str. 6 44227 Dortmund Germany
| | - Carsten Strohmann
- Institute of Inorganic Chemistry TU Dortmund University Otto‐Hahn‐Str. 6 44227 Dortmund Germany
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48
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Willauer AR, Dabrowska AM, Scopelliti R, Mazzanti M. Structure and small molecule activation reactivity of a metallasilsesquioxane of divalent ytterbium. Chem Commun (Camb) 2020; 56:8936-8939. [DOI: 10.1039/d0cc04197a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first metallasilsesquioxane of a divalent lanthanide was synthetized and structurally characterized. The dinuclear Yb(ii) complex effects the two electrons reduction of azobenzene, and the selective CO2 reduction to CO and carbonate.
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Affiliation(s)
- Aurélien R. Willauer
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Anna M. Dabrowska
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
| | - Marinella Mazzanti
- Institut des Sciences et Ingénierie Chimiques
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
- Switzerland
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49
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Shankar R, Mahavar N. A catalytic study of water dispersed gold nanoparticles for the hydrolytic oxidation of diorganosilanes – en route formation of a Pickering catalyst and synthesis of tetraorganodisiloxane-1,3-diols. Dalton Trans 2020; 49:16633-16637. [DOI: 10.1039/d0dt03252b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study unfolds the formation of a AuNP-stabilized Pickering catalyst (PIC) en route to the hydrolytic oxidation of diorganosilanes. The method offers a viable route for the synthesis of disiloxane-1,3-diols.
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Affiliation(s)
- Ravi Shankar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi
- India
| | - Nidhi Mahavar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi
- India
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50
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Astakhov G, Levitsky M, Bantreil X, Lamaty F, Khrustalev V, Zubavichus Y, Dorovatovskii P, Shubina E, Bilyachenko A. Cu(II)-silsesquioxanes as efficient precatalysts for Chan-Evans-Lam coupling. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2019.121022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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