Transition Metal Carbonyl Complexes of an N-Heterocyclic Carbene Stabilized Silyliumylidene Ion

Philipp Frisch; Tibor Szilvási; Amelie Porzelt; Shigeyoshi Inoue

doi:10.1021/acs.inorgchem.9b02772

Transition Metal Carbonyl Complexes of an N-Heterocyclic Carbene Stabilized Silyliumylidene Ion

Philipp Frisch
, Tibor Szilvási
, Amelie Porzelt
, Shigeyoshi Inoue

Chair of Silicon Chemistry

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Silyliumylidene ions - Si(II) cations with a stereochemically active lone pair of electrons - can act as ligands in transition metal complexes comparable to silylenes. However, no investigations concerning their donor abilities have been carried out. Carbonyl complexes lend themselves exceptionally well to determine the donor/acceptor strength of various ligand systems. We now report the synthesis of novel group 6 and group 8 transition metal carbonyl complexes 2-5 of N-heterocyclic carbene (NHC) stabilized silyliumylidene ion 1b, including the first Cr, Mo, and Fe complexes of a Si(II) cation. The complexes were fully characterized by multinuclear NMR and IR spectroscopy and SC-XRD studies. A combination of experimentally determined IR bands together with theoretical calculations revealed weak σ-donor properties and a negligible π-acceptor ability of NHC-stabilized Si(II) cation 1b.

Original language	English
Pages (from-to)	14931-14937
Number of pages	7
Journal	Inorganic Chemistry
Volume	58
Issue number	21
DOIs	https://doi.org/10.1021/acs.inorgchem.9b02772
State	Published - 4 Nov 2019

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title = "Transition Metal Carbonyl Complexes of an N-Heterocyclic Carbene Stabilized Silyliumylidene Ion",

abstract = "Silyliumylidene ions - Si(II) cations with a stereochemically active lone pair of electrons - can act as ligands in transition metal complexes comparable to silylenes. However, no investigations concerning their donor abilities have been carried out. Carbonyl complexes lend themselves exceptionally well to determine the donor/acceptor strength of various ligand systems. We now report the synthesis of novel group 6 and group 8 transition metal carbonyl complexes 2-5 of N-heterocyclic carbene (NHC) stabilized silyliumylidene ion 1b, including the first Cr, Mo, and Fe complexes of a Si(II) cation. The complexes were fully characterized by multinuclear NMR and IR spectroscopy and SC-XRD studies. A combination of experimentally determined IR bands together with theoretical calculations revealed weak σ-donor properties and a negligible π-acceptor ability of NHC-stabilized Si(II) cation 1b.",

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T1 - Transition Metal Carbonyl Complexes of an N-Heterocyclic Carbene Stabilized Silyliumylidene Ion

AU - Frisch, Philipp

AU - Szilvási, Tibor

AU - Porzelt, Amelie

AU - Inoue, Shigeyoshi

PY - 2019/11/4

Y1 - 2019/11/4

N2 - Silyliumylidene ions - Si(II) cations with a stereochemically active lone pair of electrons - can act as ligands in transition metal complexes comparable to silylenes. However, no investigations concerning their donor abilities have been carried out. Carbonyl complexes lend themselves exceptionally well to determine the donor/acceptor strength of various ligand systems. We now report the synthesis of novel group 6 and group 8 transition metal carbonyl complexes 2-5 of N-heterocyclic carbene (NHC) stabilized silyliumylidene ion 1b, including the first Cr, Mo, and Fe complexes of a Si(II) cation. The complexes were fully characterized by multinuclear NMR and IR spectroscopy and SC-XRD studies. A combination of experimentally determined IR bands together with theoretical calculations revealed weak σ-donor properties and a negligible π-acceptor ability of NHC-stabilized Si(II) cation 1b.

AB - Silyliumylidene ions - Si(II) cations with a stereochemically active lone pair of electrons - can act as ligands in transition metal complexes comparable to silylenes. However, no investigations concerning their donor abilities have been carried out. Carbonyl complexes lend themselves exceptionally well to determine the donor/acceptor strength of various ligand systems. We now report the synthesis of novel group 6 and group 8 transition metal carbonyl complexes 2-5 of N-heterocyclic carbene (NHC) stabilized silyliumylidene ion 1b, including the first Cr, Mo, and Fe complexes of a Si(II) cation. The complexes were fully characterized by multinuclear NMR and IR spectroscopy and SC-XRD studies. A combination of experimentally determined IR bands together with theoretical calculations revealed weak σ-donor properties and a negligible π-acceptor ability of NHC-stabilized Si(II) cation 1b.

UR - https://www.scopus.com/pages/publications/85074420963

U2 - 10.1021/acs.inorgchem.9b02772

DO - 10.1021/acs.inorgchem.9b02772

M3 - Article

C2 - 31638778

AN - SCOPUS:85074420963

SN - 0020-1669

VL - 58

SP - 14931

EP - 14937

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 21

ER -

Transition Metal Carbonyl Complexes of an N-Heterocyclic Carbene Stabilized Silyliumylidene Ion

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