Crystal Structure of [Cu4(tu)7](SO4)2]·H2O and Vibrational Spectroscopic Studies of Some Copper(I) Thiourea Complexes
Citations Over TimeTop 19% of 1998 papers
Abstract
The complex [Cu4(tu)7](SO4)2·H2O was isolated by addition of thiourea to a copper(II) sulfate electrolyte solution consisting of 2 M H2SO4 and 0.7 M CuSO4. The crystal structure of this complex was solved by X-ray methods and highlighted a [Cu4(tu)7]4+ adamantane cluster. A copper(I)−thiourea cluster of this stoichiometry has not been previously reported. The X-ray structure is refined to residual R = 0.0447 for 4093 observed reflections. Crystals are orthorhombic, of space group Pbca, with Z = 8 in a cell of dimensions a = 10.414(3), b = 17.909(3), and c = 35.818(3) Å. The copper atoms lie in a tetrahedral arrangement in which one of the copper atoms is four-coordinate, while the other three display trigonal planar coordination with Cu···Cu distances of 2.899(2)−2.967(2)Å. The copper−thiourea clusters are interlinked by sulfate ions, which strongly interact with the thiourea ligands through hydrogen bonds. The infrared and Raman spectra of the title compound and of the related copper(I) thiourea complexes [Cu2(tu)5](SO4)·3H2O, [Cu2(tu)6](SO4)·H2O, [Cu4(tu)6](NO3)4·4H2O, and [Cu4(tu)9](NO3)4·4H2O were recorded and assigned, and the dependence of ν(CuS) on the coordination environment of the copper was established.
Related Papers
- → Antiviral Activity of Thiazole-thiourea Derivatives(1967)4 cited
- Electrochemical behaviors of thiourea in alkaline medium(2008)
- → RELATION BETWEEN THE CONCENTRATION OF THIOUREA SOLUTION AND ITS MASCULINIZING EFFECT ON FROG LARVAE(1955)1 cited
- → Tensammetric studies of thiourea and its derivatives(1961)1 cited
- Mechanism of gold dissolving in alkaline thiourea solution(2007)