title: An extremely rare example of asymmetric tetranuclear core {M(4)(mu(3)-X)(2)(mu-X)(4)} in a novel alkoxo-bridged heterometallic Cr/Cd complex.
abstract: A novel heterometallic tetranuclear complex [Cr(3)Cd(NCS)(4)(H(2)tea)(Htea)(3)].3CH(3)OH () has been prepared using cadmium oxide, Reinecke's salt, ammonium thiocyanate and a methanol solution of triethanolamine (H(3)tea) in air. Crystallographic investigations reveal that the molecular structure of the complex is based on an uncommon asymmetric {Cr(3)Cd(mu(3)-O)(2)(mu-O)(4)} core with firstly observed terminal coordination of the NCS-groups in such molecular structure type. A network of O-HO hydrogen bonds as well as SS interactions link the molecules into a two-dimensional supramolecular network. Variable-temperature (1.8-300 K) magnetic susceptibility measurements show a change of the mu(B) value at low temperature, indicative of antiferromagnetic interactions (J = -7.45 cm(-1)) between chromium(iii) centers.
authors.affiliation: Department of Inorganic Chemistry, National Taras Shevchenko University, Volodymyrska str. 64, Kyiv, 01601, Ukraine.
authors.forename: Valentyna V
authors.initials: VV
authors.lastname: Semenaka
authors.forename: Oksana V
authors.initials: OV
authors.lastname: Nesterova
authors.forename: Volodymyr N
authors.initials: VN
authors.lastname: Kokozay
authors.forename: Viktoriya V
authors.initials: VV
authors.lastname: Dyakonenko
authors.forename: Oleg V
authors.initials: OV
authors.lastname: Shishkin
authors.forename: Roman
authors.initials: R
authors.lastname: Boca
authors.forename: Julia
authors.initials: J
authors.lastname: Jezierska