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Wang D, Liu Y, Chen G, Gao F, Zhang G, Wang G, Tung CH, Wang Y. Ligation of Titanium-oxide and {Mo 2} Units for Solar CO 2 Storage. Inorg Chem 2023; 62:21074-21082. [PMID: 38095877 DOI: 10.1021/acs.inorgchem.3c02876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
Two Mo-Ti-mixed oxide clusters, Ti6Mo4 and Ti4Mo4, which contain the {Mo2V} unit commonly observed in many polyoxomolybdates, were successfully synthesized. The introduction of a {Mo2V} dopant into a titanium-oxide cluster (TOC) results in a red shift of the absorption edge, hence leading to a substantial enhancement of visible-light absorption. The band gap electron transition mainly involves the ligand-to-metal charge transfer (LMCT, benzoate-to-Mo) and MoV d-d transition. Both clusters show favorable visible-light responsiveness and charge-separation efficiency. Both serve as heterogeneous photocatalysts and exhibit excellent catalytic activity in CO2/epoxide cycloadditions under very mild conditions. The mechanism study suggests that the catalytically active sites are mainly MoV, and the photogenerated electrons and holes are both involved. Ti6Mo4 exhibits better photocatalytic activity than Ti4Mo4, demonstrating the crucial role of the titanium-oxide core, which corresponds to improved light absorption and charge-separation efficiency. Our findings highlight the potential of the {Mo2V} unit in constructing Mo-Ti-mixed oxide clusters with interesting topologies and excellent solar-light-harvesting activity.
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Affiliation(s)
- Dexin Wang
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yanshu Liu
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Guanjie Chen
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Fangfang Gao
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Guanyun Zhang
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Guo Wang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yifeng Wang
- Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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Zou H, Wang Z, Guo D, Zhang L, Wang S, Zhu X. Synthesis and catalytic activity of tetradentate β-diketiminato rare-earth metal monoalkyl complexes in tandem Oppenauer oxidation and cross-aldol condensation. Dalton Trans 2023; 53:267-275. [PMID: 38038403 DOI: 10.1039/d3dt03374k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
A series of unsymmetric tetradentate β-diketiminato rare-earth metal monoalkyl complexes were synthesized, and their catalytic behavior has been well developed. Indole-incorporated β-diketiminato proligands H2L (L = MeC(NDipp)CHC(Me)NCH2CH2-3-(1-R-C8H4N), R = CH2-(2-C4H7O), L1; R = (CH2)2OMe, L2; Dipp = 2,6-iPr2C6H3) were prepared by the reaction of an arylamino-enone with 1-substituted-tryptamine in good yields. Treatment of the proligands with the rare-earth metal trialkyl complexes RE(CH2SiMe3)3(THF)2 generated the corresponding unsymmetric N,N,C,O-tetradentate β-diketiminato rare-earth metal monoalkyl complexes LRE(CH2SiMe3) (L1, RE = Y (1a), Gd (1b), Yb (1c), Lu (1d); L2, RE = Y (2a), Gd (2b), Yb (2c), and Lu(2d)). During the process, the activation of the sp2 C-H bond at the 2-position of the indole ring led to the formation of an unprecedented β-diketiminato dianion L2-, bonding to the rare-earth metal ions in a chelating N,N,C,O-tetradentate manner. Further studies indicated that these tetradentate rare-earth metal complexes could initiate the Oppenauer oxidation of secondary alcohols into the corresponding ketones in high yields. In the case of primary alcohols, a tandem Oppenauer oxidation and cross-aldol condensation occurred unexpectedly. Various α-mono-substituted benzylidene acetones, α,α'-bis-substituted benzylidene acetones and cyclohexanones were obtained under mild conditions only by controlling the molar ratio of alcohols to ketones. Notably, all these alkenylation ketones exhibited exclusive E configuration.
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Affiliation(s)
- Haiyan Zou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China.
| | - Ziqian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China.
| | - Dianjun Guo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China.
| | - Lijun Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China.
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China.
- Anhui Laboratory of Clean Catalytic Engineering, Anhui Laboratory of Functional Complexes for Materials Chemistry and Application, College of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China
| | - Xiancui Zhu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, China.
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Hamidinasab M, Ahadi N, Bodaghifard MA, Brahmachari G. Sustainable and Bio-Based Catalysts for Multicomponent Organic Synthesis: An Overview. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2097278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | - Najmieh Ahadi
- Institute of Nanosciences &Nanotechnology, Arak University, Arak, Iran
| | - Mohammad Ali Bodaghifard
- Institute of Nanosciences &Nanotechnology, Arak University, Arak, Iran
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
| | - Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis Department of Chemistry, Visva-Bharati University, Santiniketan, West Bengal, India
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Patil RC, Patil UP, Jagdale AA, Shinde SK, Patil SS. Ash of pomegranate peels (APP): A bio-waste heterogeneous catalyst for sustainable synthesis of α,α′-bis(substituted benzylidine)cycloalkanones and 2-arylidene-1-tetralones. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04160-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bovine serum albumin-catalysed cross aldol condensation: Influence of ketone structure. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bakhshi R, Zeynizadeh B, Mousavi H. Green, rapid, and highly efficient syntheses of
α
,
α′
‐bis[(aryl or allyl)idene]cycloalkanones and 2‐[(aryl or allyl)idene]‐1‐indanones as potentially biologic compounds via solvent‐free microwave‐assisted Claisen–Schmidt condensation catalyzed by MoCl
5. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Reza Bakhshi
- Department of Organic Chemistry, Faculty of ChemistryUrmia University Urmia Iran
| | - Behzad Zeynizadeh
- Department of Organic Chemistry, Faculty of ChemistryUrmia University Urmia Iran
| | - Hossein Mousavi
- Department of Organic Chemistry, Faculty of ChemistryUrmia University Urmia Iran
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Mojtahedi MM, Darvishi K, Abaee MS, Halvagar MR. Synthesis and fluorescence studies of novel bisarylmethylidene derivatives of 2-methoxy-2-methyl-1,3-dioxan-5-one. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The first general procedure is described for the synthesis of novel bisarylmethylidenes of 2-methoxy-2-methyl-1,3-dioxan-5-one 1. Thus, several derivatives of 3 are obtained rapidly in high yields by reacting 1 with different aldehydes in the presence of catalytic quantities of pyrrolidine in EtOH at room temperature. Upon completion of the reactions, products are obtained directly by spontaneous precipitation avoiding time consuming and expensive chromatographic separations. All products were characterized by proton and carbon NMR spectroscopy methods, and in one case, the proposed structure was elucidated by X-ray crystallography, confirming the Z stereochemistry for the olefinic C=C bonds. Due to showing different colours in solid and solution states, products were studied for their photophysical properties as well.
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Affiliation(s)
- Mohammad M. Mojtahedi
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
| | - Kiana Darvishi
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
| | - M. Saeed Abaee
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
| | - Mohammad R. Halvagar
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
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