Welcome to LookChem.com Sign In|Join Free

Article Doi

Conformational polymorphism and fluxional behaviour of M(PR3)2 units in closo-twelve-atom metallaheteroboranes with MX2B9 (X = C or As) and MZB10 cages (Z = S, Se or Te)

DOI: 10.1039/DT9960003323

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 3323 - 3333 (1996)

Update date:2022-08-03

Topics:

Authors:

O'Connell, DonnachaO'Connell, Donnacha

Patterson, Jennifer C.Patterson, Jennifer C.

Spalding, Trevor R.Spalding, Trevor R.

Ferguson, GeorgeFerguson, George

Gallagher, John F.Gallagher, John F.

Li, YiweiLi, Yiwei

Kennedy, John D.Kennedy, John D.

Macias, RamonMacias, Ramon

Thornton-Pett, MarkThornton-Pett, Mark

Holub, JosefHolub, Josef

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1039/DT9960003323

The compounds [3,3-(PEt3)2-closo-3,1,2-PtAs2B 9H9] 1 and [2,2-(PMe2Ph)2-closo-2,1-PtSB10H10] 2 were synthesised and characterised by NMR spectroscopy and X-ray crystallography. Crystals of 1 exhibit conformational polymorphism with five conformers of the Pt(PEt3)2 unit above the As2B3 face; those of 2 contain single conformers. The free energy of the barrier to rotation of the Pt(PMe2Ph)2 unit above the SB10 cage ligand in 2 has been determined in chloroform solution and is compared with data from other platinum and palladium metallaheteroboranes containing C2B9H11, As2B9H9, SeB10H10 and TeB10H10 ligands. A mechanism for the rotation of M(PR3)2 units above heteroborane ligand faces is suggested. It involves shifting the M(PR3)2 unit via ηn-bonded species (n < 5) with a concomitant twisting of the M(PR3)2 unit about an axis passing approximately through the metal atom and the antipodal B atom.

View More

Products guided by the article

Product name:[(P(CH3)2C6H5)2PtSB10H10]

Cas No:182443-11-4

182443-11-4

R&D Labs maybe for 182443-11-4

Relevant to this article

Hot Product