Abstract
Two modifications of the α and β forms of bis(imidazole)copper(II) dibenzoate, [Cu(im)2(OBz)2], have been obtained by recrystallization from EtOH. X-ray analysis reveals that the two modifications have the same structure with different geometric parameters. The α form crystallizes in the C2/c space group and the β form, in the P2(1)/n space group. The crystal structures of both consist of centrosymmetric monomeric molecules of [Cu(im)2(OBz)2] with a distorted octahedral geometry for the CuN2O2ċO2 ′ chromophore. The e.s.r. spectra of the α and β forms exhibit a shf structure that consists of 9 lines, and these signals are also different from those of monomeric tetra(imidazole)copper(II) diacetate. Electronic and i.r. spectra are in agreement with the structural data.
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Jian, F., Wang, Z., Bai, Z. et al. Synthesis, structural and spectroscopic characterization of the α and β forms of bis(imidazole)copper(II) dibenzoate, [Cu(im)2(OBz)2]. Transition Metal Chemistry 24, 589–594 (1999). https://doi.org/10.1023/A:1006959321922
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DOI: https://doi.org/10.1023/A:1006959321922