论文部分内容阅读
Various metal (Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Sn, La) ferrocyanides and ferricyanidesmay be considered as a multibond activation model of bimetal coordination, since CN~- acts as a typicalambident ligand bonded at the two ends with two metal ions. In accordance with hydrogenationreactions of CN~- taking place during thermal decomposition in hydrogen, the activation effect ofbimetal coordination and the mechanism of hydrogenation reaction of CN~- are discussed from theviewpoint of the crystal structure and the electron structure of the complexes. The activation degreeof CN~- bonded with vtrious metal ions has been investigated. It was found that the temperature atwhich the triple bond of CN~- breaks with top speed to evolve NH_3 correlates closely with the standardclectrode potential, and d electron configuration of the metal ions.
Various metals (Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Sn, La) ferrocyanides and ferricyanidesmay be considered as a multibond activation model of bimetal coordination, since CN ~ - acts as a typicalambident ligand bonded at the two ends with two metal ions. In accordance with hydrogenation reactions of CN ~ - taking place during thermal decomposition in hydrogen, the activation effect of bimetal coordination and the mechanism of hydrogenation reaction of CN ~ - are discussed from the viewpoint of the crystal structure and the electron structure of the complexes. The activation degreeof CN ~ - bonded with vtrious metal ions has been investigated. It was found that the temperature atwhich the triple bond of CN ~ - breaks with top speed to evolve NH_3 correlates closely with the standardlectrode potential, and d electron configuration of the metal ions.