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Frisch P, Szilvási T, Inoue S. Facile Access to Dative, Single, and Double Silicon-Metal Bonds Through M-Cl Insertion Reactions of Base-Stabilized Si II Cations. Chemistry 2020; 26:6271-6278. [PMID: 32073169 PMCID: PMC7318344 DOI: 10.1002/chem.202000866] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Indexed: 01/11/2023]
Abstract
Silicon(II) cations can offer fascinating reactivity patterns due to their unique electronic structure: a lone pair of electrons, two empty p orbitals and a positive charge combined on a single silicon center. We now report the facile insertion of N-heterocyclic carbene (NHC)-stabilized silyliumylidene ions into M-Cl bonds (M=Ru, Rh), forming a series of novel chlorosilylene transition-metal complexes. Theoretical investigations revealed a reaction mechanism in which the insertion into the M-Cl bond with concomitant 1,2-migration of a silicon-bound NHC to the transition metal takes place after formation of an initial silyliumylidene transition-metal complex. The mechanism could be verified experimentally through characterization of the intermediate complexes. Furthermore, the obtained chlorosilylene complexes can be conveniently utilized as synthons to access Si-M and Si=M bonding motifs bonds through reductive dehalogenation.
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Affiliation(s)
- Philipp Frisch
- Department of ChemistryWACKER-Institute of Silicon Chemistry and Catalysis Research CenterTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
| | - Tibor Szilvási
- Department of Chemical and Biological EngineeringUniversity of Wisconsin-Madison1415 Engineering DriveMadisonWisconsin53706-1607USA
| | - Shigeyoshi Inoue
- Department of ChemistryWACKER-Institute of Silicon Chemistry and Catalysis Research CenterTechnische Universität MünchenLichtenbergstraße 485748Garching bei MünchenGermany
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Yoshida M, Shitama H, Sameera WMC, Kobayashi A, Kato M. Robust Triplatinum Redox‐Chromophore for a Post‐Synthetic Color‐Tunable Electrochromic System. Chemistry 2019; 25:7669-7678. [PMID: 30865326 DOI: 10.1002/chem.201900713] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Masaki Yoshida
- Department of ChemistryFaculty of ScienceHokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060–0810 Japan
| | - Hotaka Shitama
- Department of ChemistryFaculty of ScienceHokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060–0810 Japan
| | - W. M. C. Sameera
- Department of ChemistryFaculty of ScienceHokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060–0810 Japan
- Current address: Institute of Low-Temperature ScienceHokkaido University North-19 West-8, Kita-ku Sapporo Hokkaido 060-0819 Japan
| | - Atsushi Kobayashi
- Department of ChemistryFaculty of ScienceHokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060–0810 Japan
| | - Masako Kato
- Department of ChemistryFaculty of ScienceHokkaido University North-10 West-8, Kita-ku Sapporo Hokkaido 060–0810 Japan
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Alonso PJ, Benedí O, Fabra MJ, Lahoz FJ, Oro LA, Pérez-Torrente JJ. Synthesis of Tetranuclear Rhodium and Iridium Complexes Directed by 6-Mercaptopyridin-2-ol: Electrochemical Behavior, Chemical Oxidation, and Coordination Chemistry. Inorg Chem 2009; 48:7984-93. [DOI: 10.1021/ic9005289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pablo J. Alonso
- Departamento de Física de la Materia Condensada, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Oscar Benedí
- Departamento de Química Inorgánica, Instituto Universitario de Catálisis Homogénea, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - María J. Fabra
- Departamento de Química Inorgánica, Instituto Universitario de Catálisis Homogénea, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento de Química Inorgánica, Instituto Universitario de Catálisis Homogénea, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica, Instituto Universitario de Catálisis Homogénea, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Jesús J. Pérez-Torrente
- Departamento de Química Inorgánica, Instituto Universitario de Catálisis Homogénea, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
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Lee HP, Hsu YF, Chen TR, Chen JD, Chen KHC, Wang JC. A Novel Cyclometalated Dimeric Iridium Complex, [(dfpbo)2Ir]2 [dfpbo = 2-(3,5-Difluorophenyl)benzoxazolato-N,C2′], Containing an Unsupported IrII−IrII Bond. Inorg Chem 2009; 48:1263-5. [PMID: 19161260 DOI: 10.1021/ic8019952] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Hsiu-Pen Lee
- Department of Applied Chemistry and Life Science, National Pingtung University of Education, Pingtung, Taiwan 90003, Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan 32023, and Department of Chemistry, Soochow University, Taipei, Taiwan 11102
| | - Yi-Fen Hsu
- Department of Applied Chemistry and Life Science, National Pingtung University of Education, Pingtung, Taiwan 90003, Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan 32023, and Department of Chemistry, Soochow University, Taipei, Taiwan 11102
| | - Tsun-Ren Chen
- Department of Applied Chemistry and Life Science, National Pingtung University of Education, Pingtung, Taiwan 90003, Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan 32023, and Department of Chemistry, Soochow University, Taipei, Taiwan 11102
| | - Jhy-Der Chen
- Department of Applied Chemistry and Life Science, National Pingtung University of Education, Pingtung, Taiwan 90003, Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan 32023, and Department of Chemistry, Soochow University, Taipei, Taiwan 11102
| | - Kelvin H.-C. Chen
- Department of Applied Chemistry and Life Science, National Pingtung University of Education, Pingtung, Taiwan 90003, Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan 32023, and Department of Chemistry, Soochow University, Taipei, Taiwan 11102
| | - Ju-Chun Wang
- Department of Applied Chemistry and Life Science, National Pingtung University of Education, Pingtung, Taiwan 90003, Department of Chemistry, Chung-Yuan Christian University, Chung-Li, Taiwan 32023, and Department of Chemistry, Soochow University, Taipei, Taiwan 11102
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De Bruin B, Hetterscheid DGH, Koekkoek AJJ, Grützmacher H. The Organometallic Chemistry of Rh-, Ir-, Pd-, and Pt-Based Radicals: Higher Valent Species. PROGRESS IN INORGANIC CHEMISTRY 2008. [DOI: 10.1002/9780470144428.ch5] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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de Bruin B, Hetterscheid DGH. Paramagnetic (Alkene)Rh and (Alkene)Ir Complexes: Metal or Ligand Radicals? Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200600923] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bas de Bruin
- University of Amsterdam, Van't Hoff Institute for Molecular Chemistry (HIMS), Department of Homogeneous and Supramolecular Catalysis, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, Fax: +31‐20‐525‐6422
| | - Dennis G. H. Hetterscheid
- Radboud University Nijmegen, Institute for Molecules and Materials (IMM), Toernooiveld 1, 6525 ED Nijmegen, The Netherlands
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Hetterscheid DGH, Kaiser J, Reijerse E, Peters TPJ, Thewissen S, Blok ANJ, Smits JMM, de Gelder R, de Bruin B. IrII(ethene): Metal or Carbon Radical? J Am Chem Soc 2005; 127:1895-905. [PMID: 15701024 DOI: 10.1021/ja0439470] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
One-electron oxidation of [(Me(n)tpa)Ir(I)(ethene)]+ complexes (Me(3)tpa = N,N,N-tri(6-methyl-2-pyridylmethyl)amine; Me(2)tpa = N-(2-pyridylmethyl)-N,N,-di[(6-methyl-2-pyridyl)methyl]-amine) results in relatively stable, five-coordinate Ir(II)-olefin species [(Me(n)tpa)Ir(II)(ethene)](2+) (1(2+): n = 3; 2(2+): n = 2). These contain a "vacant site" at iridium and a "non-innocent" ethene fragment, allowing radical type addition reactions at both the metal and the ethene ligand. The balance between metal- and ligand-centered radical behavior is influenced by the donor capacity of the solvent. In weakly coordinating solvents, 1(2+) and 2(2+) behave as moderately reactive metallo-radicals. Radical coupling of 1(2+) with NO in acetone occurs at the metal, resulting in dissociation of ethene and formation of the stable nitrosyl complex [(Me(3)tpa)Ir(NO)](2+) (6(2+)). In the coordinating solvent MeCN, 1(2+) generates more reactive radicals; [(Me(3)tpa)Ir(MeCN)(ethene)](2+) (9(2+)) by MeCN coordination, and [(Me(3)tpa)Ir(II)(MeCN)](2+) (10(2+)) by substitution of MeCN for ethene. Complex 10(2+) is a metallo-radical, like 1(2+) but more reactive. DFT calculations indicate that 9(2+) is intermediate between the slipped-olefin Ir(II)(CH(2)=CH(2)) and ethyl radical Ir(III)-CH(2)-CH(2). resonance structures, of which the latter prevails. The ethyl radical character of 9(2+) allows radical type addition reactions at the ethene ligand. Complex 2(2+) behaves similarly in MeCN. In the absence of further reagents, 1(2+) and 2(2+) convert to the ethylene bridged species [(Me(n)tpa)(MeCN)Ir(III)(mu(2)-C(2)H(4))Ir(III)(MeCN)(Me(3)tpa)](4+) (n = 3: 3(4+); n = 2: 4(4+)) in MeCN. In the presence of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxo), formation of 3(4+) from 1(2+) in MeCN is completely suppressed and only [(Me(3)tpa)Ir(III)(TEMPO(-))(MeCN)](2+) (7(2+)) is formed. This is thought to proceed via radical coupling of TEMPO at the metal center of 10(2+). In the presence of water, hydrolysis of the coordinated acetonitrile fragment of 7(2+) results in the acetamido complex [(Me(3)tpa)Ir(III)(NHC(O)CH(3)))(TEMPOH)](2+) (8(2+)).
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Affiliation(s)
- Dennis G H Hetterscheid
- Radboud University Nijmegen, Institute for Molecules and Materials, Department of Metal-Organic Chemistry, Toernooiveld 1, NL-6525 ED Nijmegen (The Netherlands)
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Hetterscheid DGH, Smits JMM, de Bruin B. Chloride-Triggered Disproportionation of a Mononuclear RhII(nbd) Species to RhI(nbd) and RhIII(η1-norbornenyl) Complexes: Possibilities for Wacker Type Mono-oxygenation of Norbornadiene to Norbornenone. Organometallics 2004. [DOI: 10.1021/om049654x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dennis G. H. Hetterscheid
- Department of Inorganic Chemistry, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands
| | - Jan M. M. Smits
- Department of Inorganic Chemistry, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands
| | - Bas de Bruin
- Department of Inorganic Chemistry, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands
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Casado MA, Pérez-Torrente JJ, Ciriano MA, Lahoz FJ, Oro LA. Tetranuclear [Rh4(mu-PyS2)2(diolefin)4] complexes as building blocks for new inorganic architectures: synthesis of coordination polymers and heteropolynuclear complexes with electrophilic d8 and d10 metal fragments. Inorg Chem 2004; 43:1558-67. [PMID: 14966995 DOI: 10.1021/ic034893i] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of [Rh4(mu-PyS2)2(cod)4] (PyS2 = 2,6-pyridinedithiolate, cod = 1,5-cyclooctadiene) with CF3SO3Me gave the cationic complex [Rh(4)(mu-PyS(2)Me)(2)(cod)4][CF3SO3]2 (1) with two 6-(thiomethyl)pyridine-2-thiolate bridging ligands from the attack of Me+ at the terminal sulfur atoms of the starting material. Under identical conditions [Rh4(mu-PyS2)2(tfbb)4] (tfbb = tetrafluorobenzobarrelene) reacted with CF3SO3Me to give the mixed-ligand complex [Rh(4)(mu-PyS2)(mu-PyS2Me)(tfbb)4][CF3SO3] 2. The nucleophilicity of the bridging ligands in the complexes [Rh4(mu-PyS2)2(diolefin)4] was exploited to prepare heteropolynuclear species. Reactions with [Au(PPh3)(Me2CO)][ClO4] gave the hexanuclear complexes [(PPh3)2Au2Rh4(mu-PyS2)2(diolefin)4][ClO4]2 (diolefin = cod (3), tfbb (4)). The structure of 4, solved by X-ray diffraction methods, showed the coordination of the [Au(PPh3)]+ fragments to the peripheral sulfur atoms in [Rh4(mu-PyS2)2(diolefin)4] along with their interaction with the neighbor rhodium atoms. Neutral coordination polymers of formula [ClMRh4(mu-PyS2)2(diolefin)4]n (M = Cu (5, 6), Au (7)) result from the self-assembly of alternating [Rh4(mu-PyS2)2(diolefin)4] ([Rh4]) blocks and MCl linkers. The formation of the infinite polymetallic chains was found to be chiroselective for M = Cu; one particular chain contains exclusively homochiral [Rh4] complexes. Cationic heterometallic coordination polymers of formula [MRh4(mu-PyS2)2(diolefin)4]n[BF4]n (M = Ag (8, 9), Cu (10, 11)) and [Rh5(mu-PyS2)2(diolefin)5]n[BF4]n (12, 13) result from the reactions of [Rh4] with [Cu(CH2CN)4]BF4, AgBF4, and [Rh(diolefin)(Me2CO)2]BF4, respectively. The heterometallic coordination polymers exhibit a weak electric conductivity in the solid state in the range (1.2-2.8) x 10(-7) S cm(-1).
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Affiliation(s)
- Miguel A Casado
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, 50009-Zaragoza, Spain
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