The equilibria were studied in the extraction of divalent transition metal ions (M2+: Co2+, Ni2+, Cu2+, Zn2+, Cd2+) with 8-quinolinethiol(Hqt) and its 2-methyl derivative (Hmqt). Precipitates form in the Cd–Hqt and Cu–Hmqt systems. In other systems except the Co–Hqt, ML2(L−: qt− or mqt−) is responsible for the extraction. Effects of anions and solvents were examined in the Zn–Hqt system. The Ni(qt)2, Ni(mqt)2, and Co(mqt)2 complexes hold the capacity to form the adduct with 1,10-phenanthroline. A mixture of diamagnetic Co(III) complexes is extracted in the Co–Hqt system. The main species was assigned as mer(S)-Co(qt)3 by the 13C NMR spectrum. The structures of other complexes are also discussed.
crystallographic analysis of the title complex reveals that nickel(II) ions are arranged to form a one-dimensionalchain structure with double thiolate-bridges. The Ni–S–Ni angle is 94.3°. Magneticsusceptibility measurements indicate that the nickel S = 1 spins are ferromagneticallycoupled within a chain.
标题配合物的 X 射线晶体学分析表明,镍 (II) 离子排列形成具有双硫醇桥的一维链结构。Ni-S-Ni 角为 94.3°。磁化率测量表明镍 S = 1 自旋在链内铁磁耦合。