1
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Cabeza JA, García F, García-Álvarez P, García-Soriano R, Pérez-Carreño E. Synthesis and Some Coordination Chemistry of Phosphane-Difunctionalized Bis(amidinato)-Heavier Tetrylenes: A Previously Unknown Class of PEP Tetrylenes (E = Ge and Sn). Inorg Chem 2023; 62:15502-15509. [PMID: 37696246 PMCID: PMC10523440 DOI: 10.1021/acs.inorgchem.3c01953] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Indexed: 09/13/2023]
Abstract
The bis(amidinato)-heavier tetrylenes E(bzamP)2 (E = Ge (2a) and Sn (2b); bzamP = N-isopropyl-N'-(diphenylphosphanylethyl)benzamidinate), which are equipped with one heavier tetrylene (germylene or stannylene) and two phosphane fragments (one on each amidinate moiety) as coordinable groups, have been synthesized from the benzamidinum salt [H2bzamP]Cl and GeCl2(dioxane) or SnCl2 in 2:1 mol ratio. A preliminary inspection of their coordination chemistry has shown that their amidinate group can also be involved in the bonding with the metal atoms as tridentate ENP and tetradentate PENP' coordination modes have been observed for the ECl(bzamP)2 ligand of [Ir{κ3E,N,P-ECl(bzamP)2}(cod)] (E = Ge (3a) and Sn (3b); cod = η4-1,5-cyclooctadiene) and the E(bzamP)2 ligand of [Ni{κ4E,N,P,P'-E(bzamP)2}] (E = Ge (4a) and Sn (4b)), which are products of reactions of 2a and 2b with [IrCl(cod)]2 (1:0.5 mol ratio) and [Ni(cod)2] (1:1 mol ratio), respectively. These products contain a 5-membered NCNEM ring that results from the insertion of the metal M atom into an E-N bond of 2a and 2b. Additionally, while iridium(I) complexes 3a and 3b are chloridotetryl derivatives (insertion of the tetrylene E atom into the Ir-Cl bond has also occurred) that have an uncoordinated phosphane group, nickel(0) complexes 4a and 4b contain a tetrylene fragment that, maintaining the lone pair, behaves as a σ-acceptor (Z-type) ligand.
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Affiliation(s)
- Javier A. Cabeza
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Felipe García
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
- School
of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Pablo García-Álvarez
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Rubén García-Soriano
- Departamento
de Química Orgánica e Inorgánica, Centro de Innovación
en Química Avanzada ORFEO−CINQA, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Enrique Pérez-Carreño
- Departamento
de Química Física y Analítica, Universidad de Oviedo, E-33071 Oviedo, Spain
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2
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Akhtar R, Kaulage SH, Sangole MP, Tothadi S, Parvathy P, Parameswaran P, Singh K, Khan S. First-Row Transition Metal Complexes of a Phosphine-Silylene-Based Hybrid Ligand. Inorg Chem 2022; 61:13330-13341. [PMID: 35969438 DOI: 10.1021/acs.inorgchem.2c01233] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have prepared two new silylene-phosphine-based hybrid ligands Si{N(R)C6H4(PPh2)}{PhC(NtBu)2} [R = TMS {trimethylsilyl} (1) and TBDMS {tert-butyldimethylsilyl} (2)], which possess two donor sites. Furthermore, the treatment of the bidentate ligand 1 with base metal halides {FeBr2, CoBr2, NiCl2·dme [nickel chloride(II) ethylene glycol dimethyl ether]} and 2 with NiBr2·dme [nickel bromide(II) ethylene glycol dimethyl ether] afforded four-coordinate six-membered metal complexes 3-6, respectively, which feature coordination from both Si(II) and P(III) sites. Subsequently, complexes 3 [(FeBr2)Si{N(SiMe3)C6H4(PPh2)}{PhC(NtBu)2}], 4 [(CoBr2)Si{N(SiMe3)C6H4(PPh2)}{PhC(NtBu)2}], 5 [(NiCl2)Si{N(SiMe3)C6H4(PPh2)}{PhC(NtBu)2}], and 6 [(NiBr2)Si{N(SitBuMe2)C6H4(PPh2)}{PhC(NtBu)2}] are studied for their redox and magnetic properties with the help of UV-vis spectroscopy, cyclic voltammetry, SQUID magnetometry, and theoretical calculations. Complexes 3-6 were found to display a paramagnetic behavior. All the compounds are well established by single-crystal X-ray diffraction studies.
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Affiliation(s)
- Ruksana Akhtar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sandeep H Kaulage
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Mayur P Sangole
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Srinu Tothadi
- CSIR-Central Salt and Marine Chemicals Research Institute, Gijub Badheka Marg, Bhavnagar 364002, India
| | - Parameswaran Parvathy
- Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Pattiyil Parameswaran
- Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Kirandeep Singh
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Shabana Khan
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
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3
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Sun X, Röder C, Roesky PW. Zinc and Cadmium Complexes of Chelating N-Heterocyclic Silylene and Their Reactivity toward Elemental Chalcogens. Inorg Chem 2021; 60:13861-13868. [PMID: 33586433 DOI: 10.1021/acs.inorgchem.0c03609] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of the pyridine-functionalized silylene LNSi [L = PhC(NtBu)2; N = 2-(methylamido)pyridine] with zinc and cadmium halides are described. These resulted in the formation of a series of zinc and cadmium silylene complexes: [LNSi-ZnX2] (X = Cl, Br, I) and [{LNSi-CdI2}2], which is the first cadmium silylene compound. Subsequent reaction of these silylene complexes with elemental sulfur and selenium under mild conditions at room temperature afforded under activation of these elements the corresponding silanethione-stabilized zinc [(LNSi═S)-ZnX2] (X = Cl, I) and cadmium [(LNSi═S)-CdI2] complexes and the silaneselenone-stabilized zinc species [(LNSi═Se)-ZnCl2]. A selective insertion of the group 16 elements into the M-Si bond of the silylenes was observed. Because of metal coordination, the Si-chalcogen bond lengths in the silanethiones and silaneselenones are enlarged and thus range between a single and a double bond. All new compounds were fully characterized by single-crystal X-ray diffraction analyses, multinuclear NMR spectroscopy, elemental analyses, and IR spectroscopy.
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Affiliation(s)
- Xiaofei Sun
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie, Engesserstraße 15, 76131 Karlsruhe, Germany
| | - Celine Röder
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie, Engesserstraße 15, 76131 Karlsruhe, Germany
| | - Peter W Roesky
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie, Engesserstraße 15, 76131 Karlsruhe, Germany
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4
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Sasaki H, Yokouchi Y, Nukazawa T, Iwamoto T. Rapid and Mild Synthesis of an NHC-Coordinated Bis(trimethylsilyl)silylene via Elimination of Halotrimethylsilane. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hayato Sasaki
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Yuki Yokouchi
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Takumi Nukazawa
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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5
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Yang W, Dong Y, Sun H, Li X. Progress in the preparation and characterization of silylene iron, cobalt and nickel complexes. Dalton Trans 2021; 50:6766-6772. [PMID: 33960329 DOI: 10.1039/d1dt00523e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The synthesis and characterization of Fe, Co and Ni complexes supported by silylene ligands in the past ten years are summarized. Due to the decrease of the electron cloud density on the Si atom after coordination, the downfield shift of the 29Si chemical shift is accompanied by the coordination between the free silylene ligand and metal. The strong electron-donating ability of silylene makes the metal center more electron-rich, which is conducive to the oxidative addition reaction in the metal center. In some cases, the coordination ability of silylene is stronger than those of phosphine and carbene ligands. Therefore, silylene transition metal complexes have better catalytic activity. The further challenges in this field are to develop new polydentate silylene ligands, synthesize chelate silylene-phosphine and silylene-carbene ligands, and design new silylene transition metal complexes for more catalytic research.
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Affiliation(s)
- Wenjing Yang
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, Jinan 250100, China.
| | - Yanhong Dong
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, Jinan 250100, China.
| | - Hongjian Sun
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, Jinan 250100, China.
| | - Xiaoyan Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Shanda Nanlu 27, Jinan 250100, China.
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6
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Kaufmann S, Krätschmer F, Köppe R, Schon T, Schoo C, Roesky PW. A cyclopentadienyl functionalized silylene - a flexible ligand for Si- and C-coordination. Chem Sci 2020; 11:12446-12452. [PMID: 34094449 PMCID: PMC8162997 DOI: 10.1039/d0sc04174b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of a 1,2,3,4-tetramethylcyclopentadienyl (Cp4) substituted four-membered N-heterocyclic silylene [{PhC(NtBu)2}Si(C5Me4H)] is reported first. Then, selected reactions with transition metal and a calcium precursor are shown. The proton of the Cp4-unit is labile. This results in two different reaction pathways: (1) deprotonation and (2) rearrangement reactions. Deprotonation was achieved by the reaction of [{PhC(NtBu)2}Si(C5Me4H)] with suitable zinc precursors. Rearrangement to [{PhC(NtBu)2}(C5Me4)SiH], featuring a formally tetravalent silicon R2C[double bond, length as m-dash]Si(R')-H unit, was observed when the proton of the Cp4 ring was shifted from the Cp4-ring to the silylene in the presence of a Lewis acid. This allows for the coordination of the Cp4-ring to a calcium compound. Furthermore, upon reaction with transition metal dimers [MCl(cod)]2 (M = Rh, Ir; cod = 1,5-cyclooctadiene) the proton stays at the Cp4-ring and the silylene reacts as a sigma donor, which breaks the dimeric structure of the precursors.
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Affiliation(s)
- Sebastian Kaufmann
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT) Engesserstrasse 15 76131 Karlsruhe Germany
| | - Frederic Krätschmer
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT) Engesserstrasse 15 76131 Karlsruhe Germany
| | - Ralf Köppe
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT) Engesserstrasse 15 76131 Karlsruhe Germany
| | - Thorben Schon
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT) Engesserstrasse 15 76131 Karlsruhe Germany
| | - Christoph Schoo
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT) Engesserstrasse 15 76131 Karlsruhe Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT) Engesserstrasse 15 76131 Karlsruhe Germany
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7
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Yadav S, Kumar R, Vipin Raj K, Yadav P, Vanka K, Sen SS. Amidinato Germylene‐Zinc Complexes: Synthesis, Bonding, and Reactivity. Chem Asian J 2020; 15:3116-3121. [DOI: 10.1002/asia.202000807] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/10/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Sandeep Yadav
- Inorganic Chemistry and Catalysis Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Rohit Kumar
- Inorganic Chemistry and Catalysis Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - K. Vipin Raj
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
- Physical and Material Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India)
| | - Prashant Yadav
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
- Polymer Science & Engineering Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
- Physical and Material Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India)
| | - Sakya S. Sen
- Inorganic Chemistry and Catalysis Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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8
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Abe S, Kosai T, Iimura T, Iwamoto T. Synthesis of Ni(dvtms) and Ni(CO)
3
Complexes Ligated by an Isolable Two‐Coordinate Cyclic Alkylsilylene. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shunya Abe
- Department of Chemistry Graduate School of Science Tohoku University Aoba‐ku 980‐8578 Sendai Japan
| | - Tomoyuki Kosai
- Department of Chemistry Graduate School of Science Tohoku University Aoba‐ku 980‐8578 Sendai Japan
| | - Tomohiro Iimura
- Research & Development Dow Toray Co., Ltd. Ichihara 299‐0108 Chiba Japan
| | - Takeaki Iwamoto
- Department of Chemistry Graduate School of Science Tohoku University Aoba‐ku 980‐8578 Sendai Japan
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9
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Poitiers NE, Giarrana L, Leszczyńska KI, Huch V, Zimmer M, Scheschkewitz D. Indirekte und direkte Anknüpfung von Übergangsmetallen an Silicoide. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nadine E. Poitiers
- Krupp-Chair of Inorganic and General Chemistry Saarland University Campus Saarbrücken C4.1 66123 Saarbrücken Deutschland
| | - Luisa Giarrana
- Krupp-Chair of Inorganic and General Chemistry Saarland University Campus Saarbrücken C4.1 66123 Saarbrücken Deutschland
| | - Kinga I. Leszczyńska
- Krupp-Chair of Inorganic and General Chemistry Saarland University Campus Saarbrücken C4.1 66123 Saarbrücken Deutschland
| | - Volker Huch
- Krupp-Chair of Inorganic and General Chemistry Saarland University Campus Saarbrücken C4.1 66123 Saarbrücken Deutschland
| | - Michael Zimmer
- Krupp-Chair of Inorganic and General Chemistry Saarland University Campus Saarbrücken C4.1 66123 Saarbrücken Deutschland
| | - David Scheschkewitz
- Krupp-Chair of Inorganic and General Chemistry Saarland University Campus Saarbrücken C4.1 66123 Saarbrücken Deutschland
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10
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Poitiers NE, Giarrana L, Leszczyńska KI, Huch V, Zimmer M, Scheschkewitz D. Indirect and Direct Grafting of Transition Metals to Siliconoids. Angew Chem Int Ed Engl 2020; 59:8532-8536. [PMID: 32092221 PMCID: PMC7317502 DOI: 10.1002/anie.202001178] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Indexed: 11/18/2022]
Abstract
Unsaturated charge‐neutral silicon clusters (siliconoids) are important as gas‐phase intermediates between molecules and the elemental bulk. With stable zirconocene‐ and hafnocene‐substituted derivatives, we here report the first examples containing directly bonded transition‐metal fragments that are readily accessible from the ligato‐lithiated Si6 siliconoid (1Li) and Cp2MCl2 (M=Zr, Hf). Charge‐neutral siliconoid ligands with pending tetrylene functionality were prepared by the reaction of amidinato chloro tetrylenes [PhC(NtBu)2]ECl (E=Si, Ge, Sn) with 1Li, thus confirming the principal compatibility of such low‐valent functionalities with the unsaturated Si6 cluster scaffold. The pronounced donor properties of the tetrylene/siliconoid hybrids allow for their coordination to the Fe(CO)4 fragment.
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Affiliation(s)
- Nadine E Poitiers
- Krupp-Chair of Inorganic and General Chemistry, Saarland University, Campus Saarbrücken C4.1, 66123, Saarbrücken, Germany
| | - Luisa Giarrana
- Krupp-Chair of Inorganic and General Chemistry, Saarland University, Campus Saarbrücken C4.1, 66123, Saarbrücken, Germany
| | - Kinga I Leszczyńska
- Krupp-Chair of Inorganic and General Chemistry, Saarland University, Campus Saarbrücken C4.1, 66123, Saarbrücken, Germany
| | - Volker Huch
- Krupp-Chair of Inorganic and General Chemistry, Saarland University, Campus Saarbrücken C4.1, 66123, Saarbrücken, Germany
| | - Michael Zimmer
- Krupp-Chair of Inorganic and General Chemistry, Saarland University, Campus Saarbrücken C4.1, 66123, Saarbrücken, Germany
| | - David Scheschkewitz
- Krupp-Chair of Inorganic and General Chemistry, Saarland University, Campus Saarbrücken C4.1, 66123, Saarbrücken, Germany
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11
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Raghavendra B, Bakthavachalam K, Das T, Roisnel T, Sen SS, Vanka K, Ghosh S. Transmetallation vs adduct: Diverse reactivity of N,O-ketiminato germylene with [Cp*MCl2]2 (M = Rh or Ir; Cp* = η5-C5Me5) and MCl5 (M = Nb and Ta). J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Cabeza JA, García‐Álvarez P, Gómez‐Gallego M, González‐Álvarez L, Merinero AD, Sierra MA. Two Types of σ‐Allenyl Complexes from Reactions of Silylenes and Germylenes with Chromium Fischer Alkynyl(alkoxy)carbenes. Chemistry 2019; 25:8635-8642. [DOI: 10.1002/chem.201901579] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Pablo García‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Mar Gómez‐Gallego
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
| | - Laura González‐Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química Orgánica e InorgánicaUniversidad de Oviedo 33071 Oviedo Spain
| | - Alba D. Merinero
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
| | - Miguel A. Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)Departamento de Química OrgánicaUniversidad Complutense 28040 Madrid Spain
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13
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Roesch P, Müller R, Dallmann A, Scholz G, Kaupp M, Braun T, Braun‐Cula B, Wittwer P. A Silylene–Borane Lewis Pair as a Tool for Trapping a Water Molecule: Silanol Formation and Dehydrogenation. Chemistry 2019; 25:4678-4682. [DOI: 10.1002/chem.201900481] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Philipp Roesch
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Robert Müller
- Institut für ChemieTechnische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr. C7 Straße des 17. Juni 135 10623 Berlin Germany
| | - André Dallmann
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Gudrun Scholz
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Martin Kaupp
- Institut für ChemieTechnische Universität Berlin, Theoretische Chemie/Quantenchemie, Sekr. C7 Straße des 17. Juni 135 10623 Berlin Germany
| | - Thomas Braun
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Beatrice Braun‐Cula
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Philipp Wittwer
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Straße 2 12489 Berlin Germany
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14
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Álvarez-Rodríguez L, Cabeza JA, García-Álvarez P, Gómez-Gallego M, González-Álvarez L, Merinero AD, Sierra MA. Reversible Carbene Insertion into a Ge−N Bond and Insights into CO and Carbene Substitution Reactions Involving Amidinatogermylenes and Fischer Carbene Complexes. Chemistry 2018; 25:1588-1594. [DOI: 10.1002/chem.201805406] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Lucía Álvarez-Rodríguez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Javier A. Cabeza
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Pablo García-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Mar Gómez-Gallego
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
| | - Laura González-Álvarez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; 33071 Oviedo Spain
| | - Alba D. Merinero
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
| | - Miguel A. Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA); Departamento de Química Orgánica; Universidad Complutense; 28040 Madrid Spain
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15
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Abstract
Proceeding our initial studies of compounds with formally dative TM→Si bonds (TM = Ni, Pd, Pt), which feature a paddlewheel arrangement of four (N,S) or (N,N) bridging ligands around the TM–Si axis, the current study shows that the (N,O)-bidentate ligand 2-pyridyloxy (pyO) is also capable of bridging systems with TM→Si bonds (shown for TM = Pd, Cu). Reactions of MeSi(pyO)3 with [PdCl2(NCMe)2] and CuCl afforded the compounds MeSi(µ-pyO)4PdCl (1) and MeSi(µ-pyO)3CuCl (2), respectively. In the latter case, some crystals of the Cu(II) compound MeSi(µ-pyO)4CuCl (3) were obtained as a byproduct. Analogous reactions of Si(pyO)4, in the presence of HpyO, with [PdCl2(NCMe)2] and CuCl2, afforded the compounds [(HpyO)Si(µ-pyO)4PdCl]Cl (4), (HpyO)2Si[(µ-pyO)2PdCl2]2 (5), and (HpyO)2Si[(µ-pyO)2CuCl2]2 (6), respectively. Compounds 1–6 and the starting silanes MeSi(pyO)3 and Si(pyO)4 were characterized by single-crystal X-ray diffraction analyses and, with exception of the paramagnetic compounds 3 and 6, with NMR spectroscopy. Compound 2 features a pentacoordinate Si atom, the Si atoms of the other complexes are hexacoordinate. Whereas compounds 1–4 feature a TM→Si bond each, the Si atoms of compounds 5 and 6 are situated in an O6 coordination sphere, while the TMCl2 groups are coordinated to pyridine moieties in the periphery of the molecule. The TM–Si interatomic distances in compounds 1–4 are close to the sum of the covalent radii (1 and 4) or at least significantly shorter than the sum of the van-der-Waals radii (2 and 3). The latter indicates a noticeably weaker interaction for TM = Cu. For the series 1, 2, and 3, all of which feature the Me–Si motif trans-disposed to the TM→Si bond, the dependence of the TM→Si interaction on the nature of TM (Pd(II), Cu(I), and Cu(II)) was analyzed using quantum chemical calculations, that is, the natural localized molecular orbitals (NLMO) analyses, the non-covalent interaction (NCI) descriptor, Wiberg bond order (WBO), and topological characteristics of the bond critical points using the atoms in molecules (AIM) approach.
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16
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Pahar S, Karak S, Pait M, Raj KV, Vanka K, Sen SS. Access to Silicon(II)– and Germanium(II)–Indium Compounds. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00093] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sanjukta Pahar
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
| | - Suvendu Karak
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Moumita Pait
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - K. Vipin Raj
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Sakya S. Sen
- Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
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17
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Yadav S, Sangtani E, Dhawan D, Gonnade RG, Ghosh D, Sen SS. Unprecedented solvent induced inter-conversion between monomeric and dimeric silylene–zinc iodide adducts. Dalton Trans 2017; 46:11418-11424. [DOI: 10.1039/c7dt01823a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of silylene [PhC(NtBu)2SiN(SiMe3)2] with ZnI2leads to both monomeric [PhC(NtBu)2Si{N(SiMe3)2} → ZnI2]·THF (1) and dimeric [PhC(NtBu)2Si{N(SiMe3)2} → ZnI2]2(2) adducts which are inter-convertible.
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Affiliation(s)
- Sandeep Yadav
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Ekta Sangtani
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi-110020
- India
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
| | - Diksha Dhawan
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Rajesh G. Gonnade
- Academy of Scientific and Innovative Research (AcSIR)
- New Delhi-110020
- India
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
| | - Debashree Ghosh
- Department of Physical Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Sakya S. Sen
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
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18
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Tacke R, Ribbeck T. Bis(amidinato)- and bis(guanidinato)silylenes and silylenes with one sterically demanding amidinato or guanidinato ligand: synthesis and reactivity. Dalton Trans 2017; 46:13628-13659. [DOI: 10.1039/c7dt01297g] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silylenes 1–4 have great synthetic potential for the synthesis of higher coordinate silicon(ii) and silicon(iv) complexes with unprecedented structural motifs.
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Affiliation(s)
- Reinhold Tacke
- Universität Würzburg
- Institut für Anorganische Chemie
- 97074 Würzburg
- Germany
| | - Tatjana Ribbeck
- Universität Würzburg
- Institut für Anorganische Chemie
- 97074 Würzburg
- Germany
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