Vibrational study of [(CH3)4N]2Cu0.5Zn0.5Cl4
A Ben Rhaiem1, F Hlel, K Guidara
1Laboratoire de l'état solide, Faculté des Sciences de Sfax, B.P. 802, 3038 Sfax, Tunisia. Arhaim@yahoo.fr
Abstract:
[(CH3)4N]2Zn0.5Cu0.5Cl4 shows an orthorhombic system at ambient temperature with P2(1)nb space group. At room temperature, the crystal consists of three sublattices constituted by MCl4 (M=Cu and Zn) and two tetramethylammoniums N1(CH3)4 and N2(CH3)4, which give rise to a total of 372 vibrational modes that transform according to the four irreductible representations of the C2v point group in the following way: Gamma(vib)=93(A1+A2+B1+B2). The infrared and Raman spectra of polycrystalline samples have been investigated at room temperature. The assignment of the observed bands is discussed.
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