Metallic complexes of dimethylsulphoxide

Thermal analysis, phase transitions and molecular reorientations in [Fe(OS(CH3)2)6](ClO4)2

“…According to Selbin et al [8] and Currier and Weber [9] title compound precipitated as a pale yellow crystals and explodes in the vicinity of 423 K. Its infrared absorption spectrum suggests that DMSO ligands are bonded to a central metal through the oxygen atom [8][9][10]. Berney and Weber [10] have claimed that the study of [Fe(OS(CH 3 ) 2 ) 6 ](ClO 4 ) 2 is difficult because of its rapid decomposition.…”

Phase Polymorphism of [Ni(DMSO)6](ClO4)2 Studied by Differential Scanning Calorimetry

“…HNiC, i. e. [Ni(DMSO) 6 ](ClO 4 ) 2 , where DMSO is dimethylsulphoxide, crystallizes in a trigonal system at room in ambient temperature and belongs to the P31c space group (No. 159) [1].…”

“…The lattice parameters are: a = 11.819Å and c = 12.361Å [1]. HNiC contains two kinds of ions: [Ni((CH 3 ) 2 SO) 6 ] 2+ and ClO 4 − . The cation is a slightly deformed octahedron, where Ni is surrounded by six oxygen atoms coming from the DMSO ligands, which are built like C 2v pyramids.…”

“…The cation is a slightly deformed octahedron, where Ni is surrounded by six oxygen atoms coming from the DMSO ligands, which are built like C 2v pyramids. We have recently investigated the polymorphism of HCoC and HZnC, i. e. [Co(DMSO) 6 ](ClO 4 ) 2 and [Zn(DMSO) 6 ](ClO 4 ) 2 , using differential scanning calorimetry (DSC) [2,3]. These compounds are isostructural with HNiC.…”

“…0932-0784 / 07 / 0100-0067 $ 06.00 c 2007 Verlag der Zeitschrift für Naturforschung, Tübingen · http://znaturforsch.com 6 ](ClO 4 ) 2 were dissolved while being slowly heated in DMSO of high chemical purity [4], which was previously additionally purified by vacuum distillation at low pressure. This solution was then chilled, and the precipitated crystals of HNiC were filtered and washed with acetone.…”