Enhanced Slip Distortions in 1-Phenyl-2-methyldicarbaplatinaboranes. Conformational Destabilisation in the Isomerisation of 1-Phenyldicarbaplatinaboranes

DOI: 10.1039/DT9950001755

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1755 - 1764 (1995)

Update date:2022-08-05

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Authors:

McGrath, Thomas D.

Welch, Alan J.

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Article abstract of DOI:10.1039/DT9950001755

The compounds Tl2<7-Ph-8-Me-7,8-nido-C2B9H9>, <7-Ph-8-Me-7,8-nido-C2B9H10>, 1-Ph-2-Me-3,3-L₂-3,1,2-PtC2B9H9 have been prepared and characterised.The platinum complexes were obtained from the reactions between Tl2<7-Ph-8-Me-7,8-nido-C2B9H9> and the appropriate species.Crystallographic studies upon the compounds where L = PEt3 and two crystalline modifications of that where L = PPh3 afforded evidance of a substantial influence of intramolecular crowding upon the observed structures, so that the lateral slippage (Δ) of the metal fragment is significantly enhanced: Δ = 0.74 and 0.94 and 0.91 Angstroem respectively.These compounds do not isomerise under conditions which produce rearrangement in the corresponding (less-congested) derivatives of 1-phenylcarbaborane, consistent with the proposed conformational destabilisation in the latter system.

Full text of DOI:10.1039/DT9950001755

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