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DOI: 10.1039/A809519A (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 1061-1066

Adducts of the Lewis acid [B(C6F5)3] with transition metal oxo compounds

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Georgina Barrado, Linda Doerrer, Malcolm L. H. Green and Michael A. Leech

Abstract

The oxo anions [WO4]2– and [ReO4]– react with the Lewis acid molecule [B(C6F5)3] to give the tris-adduct [WO{OB(C6F5)3}3]2– or the mono adduct [ReO3{OB(C6F5)3}]– respectively. The crystal structure of the salt [nPr4N]2[WO{OB(C6F5)3}3] has been determined. The η-cyclopentadienyl-oxo compounds [Re(η-C5R5)O3] (where R = H or Me) react with [B(C6F5)3] giving the mono adducts [(η-C5R5)ReO2{OB(C6F5)3}] and the crystal structure of the compound where R = H has been determined. The triazacyclononane compounds [LMO3] (where L = N,N[hair space]′,N[hair space]″-trimethyl-1,4,7-triazacyclononane and M = Mo or W) with [B(C6F5)3] give the mono adducts [LMO2{OB(C6F5)3}] and the crystal structure of the tungsten compound is reported. The compound [Re{HB(pz)3}O3] [where {HB(pz)3} = hydridotris(1-pyrazolyl) borate] and [B(C6F5)3] gives the mono adduct [HB(pz)3ReO2{OB(C6F5)3}].

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