Semi-bridging σ-silyls as Z-type ligands

The reactions of SiHPh(NCH PPh ) C H -1,2 with a range of zerovalent group 10 reagents afford the homoleptic bimetallic complexes [M {μ-κ -Si,P,P'-SiPh(CH PPh ) C H } ] (M = Ni, Pd, Pt) in which the M-M bond is unsymmetrically bridged by two σ-silyl groups. The asymmetry of the M Si core increa...

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Published inChemical communications (Cambridge, England) Vol. 56; no. 24; pp. 3532 - 3535
Main Authors Frogley, Benjamin J, Hill, Anthony F, Sharma, Manab, Sinha, Arup, Ward, Jas S
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 25.03.2020
Subjects
Bimetals
Crystallography
Ligands
Palladium
Platinum
Reagents
Silicon
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Summary:The reactions of SiHPh(NCH PPh ) C H -1,2 with a range of zerovalent group 10 reagents afford the homoleptic bimetallic complexes [M {μ-κ -Si,P,P'-SiPh(CH PPh ) C H } ] (M = Ni, Pd, Pt) in which the M-M bond is unsymmetrically bridged by two σ-silyl groups. The asymmetry of the M Si core increases from Ni through Pd to Pt and is consistent with a bonding description in which one metal acts as an electron pair donor to a trigonal bipyramidal 'Z-type' silicon centre, reminsicent of semi-bridging coordination by CO, carbynes and boryl ligands.
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ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc07763d