Formation of novel η2-vinyl complexes by nucleophilic attack at co-ordinated hexafluorobut-2-yne: Implications for the stereochemistry of addition and insertion reactions of co-ordinated acetylenes. Crystal and molecular structure of...

Jack L. Davidson, I. E P Murray, Peter N. Preston, Maria V. Russo, Ljubica Manojlović-Muir, Kenneth W. Muir

Research output: Contribution to journalArticle

Abstract

full title: Formation of novel ?2-vinyl complexes by nucleophilic attack at co-ordinated hexafluorobut-2-yne: Implications for the stereochemistry of addition and insertion reactions of co-ordinated acetylenes. Crystal and molecular structure of [Mo{SC5H4NC(CF3) .C(CF3)}-(CF3C=CCF3)(?-C 5H5)] Reactions of Tl(LL) (LL- = pyridine-2-thiolato, pyrimidine-2-thiolato, or thiazoline-2-thiolato) with the bis-hexafluorobut-2-yne complexes [MCl(CF3C=CCF3)2- (?-C5H5)] (M = Mo or W), give products [M{(LL)C(CF3).C(CF3)}(CF3C= CCF3)(?-C5H5)] containing a novel ?2-vinyl ligand resulting from nucleophilic attack of LL - on an alkyne ligand whereas with [WCl(CF3C= CCF3)2- (?-C5H5)] the thallium(I) salt of 2-mercaptopyridine N-oxide unexpectedly promotes cyclopentadienyl group displacement to give the co-ordinatively unsaturated bishexafluorobut-2-yne complexes [W(SC5H4NO) 2(CF3C= CCF3)2] and [W(SC 5H4N)(SC5H4NO)(CF 3C=CCF3)2]; the structure of [Mo{SC 5H4NC(CF3).C(CF3)} (CF3C=CCF3)(?-C5H5)] has been determined by X-ray crystallography.

Original languageEnglish
Pages (from-to)1059-1061
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number20
Publication statusPublished - 1981

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