Main group pyrazolates - The X-ray structures of [Al(η2-But 2pz)3], [SnMe31-Ph2pz)] and [GePh31-But 2pz)] (R2pz = 3,5-disubstituted pyrazolate)

Glen B. Deacon, Ewan E. Delbridge, Craig M. Forsyth, Peter C. Junk, Brian W. Skelton, Allan H. White

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From metathesis reactions between AlCl3, SnMe3Cl, or GePh3Br and the appropriate potassium 3,5-disubstituted pyrazolate [K(R2pz)] the complexes [Al(But 2pz)3], [SnMe3(But 2pz)], [SnMe3(But 2pz)], and [GePh3(But 2pz)] have been obtained. The X-ray structure of [Al(But 2pz)3] shows the complex to be monomeric with η2-pyrazolate groups, in a quasi-trigonal prismatic array: the first monomeric homoleptic tris(pyrazolato) complex of any element. X-Ray structures of [SnMe3(Ph2pz)] and [GePh3(But 2pz)] reveal mononuclear species with distorted tetrahedral stereochemistries and η1-pyrazolate groups. Comparisons of spectroscopic data between [SnMe3(Ph2pz)] and [SnMe3(But 2pz)] suggest the latter is also four-coordinate with an η1-But 2pz ligand.

Original languageEnglish
Pages (from-to)X2-739
JournalAustralian Journal of Chemistry
Issue number8
Publication statusPublished - 1 Dec 1999

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