Tris(tetramethylammonium) tetra-μ2-sulfido-tetrasulfidocopper(I)dimolybdenum(VI)N,N-dimethylformamide solvate

Yuan Cao,Yulin Chen,Guosheng Cheng

doi:10.1107/s1600536808036532

Abstract

The title compound, (C4H12N)3[CuMo2S8]·C3H7NO, was obtained from the self-assembly of tetrathiomolybdate, tetramethylammonium nitrate and cuprous sulfide in dimethylformamide (DMF). The asymmetric unit contains three (NMe4)+ cations, one [Mo2S8Cu]3− anion and one DMF solvent molecule, and no obvious interactions are observed between these species. The trinuclear anion can be viewed as fused [MoS4Cu]− units sharing a copper center. The geometric parameters of the trivalent anion are comparable to those reported for other related salts including isomorphous anions, namely (NEt4)2(PPh4)[Mo2S8Cu] (a) and (Ph3P=N=PPh3)2(NEt4)[W2S8Cu]·2CH3CN (b). However, the Mo—Cu—Mo angle is found to be 160.24 (3)° for the title salt, while this angle is 162.97 (2)° in (a) and the W—Cu—W angle is 170.3 (2)° in (b), indicating that the largest deviation from linearity is in the title compound.

Highlights

Structure Reports OnlineKey indicators: single-crystal X-ray study; T = 293 K; mean (O–C) = 0.009 A; R factor = 0.042; wR factor = 0.136; data-to-parameter ratio = 24.2
The title compound, (C4H12N)3[CuMo2S8]ÁC3H7NO, was obtained from the self-assembly of tetrathiomolybdate, tetramethylammonium nitrate and cuprous sulfide in dimethylformamide (DMF)
The asymmetric unit contains three (NMe4)+ cations, one [Mo2S8Cu]3À anion and one DMF solvent molecule, and no obvious interactions are observed between these species

Summary

Structure Reports Online

Key indicators: single-crystal X-ray study; T = 293 K; mean (O–C) = 0.009 A; R factor = 0.042; wR factor = 0.136; data-to-parameter ratio = 24.2. The title compound, (C4H12N)3[CuMo2S8]ÁC3H7NO, was obtained from the self-assembly of tetrathiomolybdate, tetramethylammonium nitrate and cuprous sulfide in dimethylformamide (DMF). The asymmetric unit contains three (NMe4)+ cations, one [Mo2S8Cu]3À anion and one DMF solvent molecule, and no obvious interactions are observed between these species. The Mo—Cu—Mo angle is found to be 160.24 (3) for the title salt, while this angle is 162.97 (2) in (a) and the W—Cu—W angle is 170.3 (2) in (b), indicating that the largest deviation from linearity is in the title compound. Crystal data (C4H12N)3[CuMo2S8]ÁC3H7NO Mr = 807.43 Monoclinic, P21=n a = 9.4380 (19) Ab = 20.336 (4) Ac = 17.718 (4) A = 98.60 (3)

Data collection

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