Synthesis of Tris- and Tetrakis(pyrazol-1-yl)borate Gold(III) Complexes. Crystal Structures of [Au{κ2-N,N‘-BH(Pz)3}Cl2] (pz = Pyrazol-1-yl) and [Au{κ2-N,N‘-B(Pz)4}(κ2-C,N-C6H4CH2NMe2-2)]ClO4·CHCl3
- 12 March 2002
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 41 (7) , 1870-1875
- https://doi.org/10.1021/ic011031d
Abstract
Na[BH(pz)(3)] and Na[AuCl(4)].2H(2)O react in water (1:1) to give [Au[kappa(2)-N,N'-BH(pz)(3)]Cl(2)] (1) or, in the presence of NaClO(4) (2:1:1), the cationic complex [Au[kappa(2)-N,N'-BH(pz)(3)](2)]ClO(4) (2). The reactions of Na[B(pz)(4)] with the cyclometalated gold complexes [AuRCl(2)] and NaClO(4) (1:1:1) produce [Au[kappa(2)-N,N'-B(pz)(4)](R)]ClO(4) [R = kappa(2)-C,N-C(6)H(4)CH(2)NMe(2)-2 (3)] or [Au[kappa(2)-N,N'-B(pz)(4)](R)Cl] [R = C(6)H(3)(N=NC(6)H(4)Me-4')-2-Me-5 (4)], respectively, although 4 is better obtained in the absence of NaClO(4). The crystal structures of 1 and 3.CHCl(3) are reported. Both complexes display the gold center in square planar environments, two coordination sites being occupied by the chelating poly(pyrazolyl)borate ligands.Keywords
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