Bis(acetonitrile-κN)bis[hydridotris(3,5-dimethylpyrazol-1-yl-κN²)borato]di-μ₃-sulfido-tetra-μ₂-sulfido-di-μ₂-thiocyanato-κ²N:S;κ²S:N-tetracopper(I)ditungsten(VI)

Abstract

Reactions of (Et(4)N)[Tp*WS(3)] [Tp* is hydridotris(3,5-dimethylpyrazol-1-yl)borate] with CuSCN in MeCN in the presence of melamine afforded the title neutral dimeric cluster [Cu(4)W(2)(C(15)H(22)BN(6))(2)(NCS)(2)S(6)(C(2)H(3)N)(2)] or [Tp*W(μ(2)-S)(2)(μ(3)-S)Cu(μ(2)-SCN)(CuMeCN)](2), which has two butterfly-shaped [Tp*WS(3)Cu(2)] cores bridged across a centre of inversion by two (CuSCN)(-) anions. The S atoms of the bridging thiocyanate ligands interact with the H atoms of the methyl groups of the Tp* units of a neighbouring dimer to form a C-H···S hydrogen-bonded chain. The N atoms of the thiocyanate anions interact with the H atoms of the methyl groups of the Tp* units of neighbouring chains, affording a two-dimensional hydrogen-bonded network.

Heterometallic transition metal clusters and cluster-supported coordination polymers derived from Tp- and Tp*-based Mo(W) sulfido precursors

“…For example, reactions of P1 with two equiv of CuSCN in the presence of melamine in MeCN afforded a dimeric cluster [Tp*WS 3 Cu 2 (SCN)(MeCN)] 2 (25) (Scheme 9) [73]. As shown in butterfly-shaped core, the coordination environments around two Cu atoms are trigonal planar and tetrahedral, similar to those found in 15.…”