Two W/Cu/S clusters: tetraethylammonium bromidodi-μ(2)-sulfido-sulfidotris(3,5-dimethylpyrazol-1-yl)boratocopper(I)tungsten(VI) and tetraethylammonium dibromido-μ(3)-sulfido-di-μ(2)-sulfido-tris(3,5-dimethylpyrazol-1-yl)boratodicopper(I)tungsten(VI).
Summary of "Two W/Cu/S clusters: tetraethylammonium bromidodi-μ(2)-sulfido-sulfidotris(3,5-dimethylpyrazol-1-yl)boratocopper(I)tungsten(VI) and tetraethylammonium dibromido-μ(3)-sulfido-di-μ(2)-sulfido-tris(3,5-dimethylpyrazol-1-yl)boratodicopper(I)tungsten(VI)."
The reaction of (Et(4)N)[Tp*WS(3)] [Tp* = hydrogen tris(3,5-dimethylpyrazol-1-yl)borate] with one or two equivalents of CuBr afforded the [1 + 1] and [1 + 2] addition products (Et(4)N)[Tp*WS(μ-S)(2)(CuBr)] {or (C(8)H(20)N)[CuWBr(C(15)H(22)BN(6))S(3)], (I)} and (Et(4)N)[Tp*W(μ(3)-S)(μ-S)(2)(CuBr)(2)] {or (C(8)H(20)N)[Cu(2)WBr(2)(C(15)H(22)BN(6))S(3)], (II)}. The anion of (I) contains a [W(μ-S)(2)Cu] core formed by the addition of one CuBr unit to the [Tp*WS(3)] species. The anion of (II) has a butterfly-shaped [W(μ(3)-S)(μ-S)(2)Cu(2)] core formed by the addition of two CuBr units to the [Tp*WS(3)] species. The [Tp*WS(3)] sections of each complex exhibit approximate C(3v) point symmetry and have closely comparable geometry. In (II), both the anion and cation lie on a crystallographic mirror plane. The structure of (I) is noncentrosymmetric and polar.
Affiliation
Department of Chemistry, Nanchang University, Nanchang 330031, People's Republic of China.
Journal Details
This article was published in the following journal.
Name: Acta crystallographica. Section C, Crystal structure communications
ISSN: 1600-5759
Pages: m307-10
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21881178
- DOI: http://dx.doi.org/10.1107/S0108270111032586
Medical and Biotech [MESH] Definitions
Tungsten Compounds
Inorganic compounds that contain tungsten as an integral part of the molecule.
Tungsten
Tungsten. A metallic element with the atomic symbol W, atomic number 74, and atomic weight 183.85. It is used in many manufacturing applications, including increasing the hardness, toughness, and tensile strength of steel; manufacture of filaments for incandescent light bulbs; and in contact points for automotive and electrical apparatus.
Tetraethylammonium
A potassium-selective ion channel blocker. (From J Gen Phys 1994;104(1):173-90)
Phosphotungstic Acid
Tungsten hydroxide oxide phosphate. A white or slightly yellowish-green, slightly efflorescent crystal or crystalline powder. It is used as a reagent for alkaloids and many other nitrogen bases, for phenols, albumin, peptone, amino acids, uric acid, urea, blood, and carbohydrates. (From Merck Index, 11th ed)
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