Synthesis,Crystal Structure and Spectroscopy Studies on Complex cis-Os~Ⅱ(bpy)_2Cl_2 and Its Oxidation Product [cis-Os~Ⅲ(bpy)_2Cl_2](PF_6)

The treatment of(NH_4)_2 OsCl_6 with 2 equiv of bpy in ethylene glycol produced complex 1, cis-Os~Ⅱ(bpy)_2Cl_2(bpy = 2,2?-bipyridine). Its one-electron oxidation product 2, [cis-Os~Ⅲ-(bpy)_2Cl_2](PF_6), was obtained by the oxidation of 1 with(Cp)_2 FePF_6. Complex 1 crystallizes in the orthorhombic space group Pbca, and adopts distorted [MCl_2 N_4] octahedral coordination, in which four coordination sites are occupied by four nitrogen atoms from two bpy ligands and the other two sites are occupied by two chlorine atoms in a cis-position. Complex 2 crystallizes in monoclinic space group C2/c, and contains one [Os(bpy)_2Cl_2]~+ cation, one PF_6~- anion and two uncoordinated water solvent molecules.     

Synthesis,Crystal Structure and Spectroscopic Properties of Cyanide-bridged Complex [Ru~Ⅱ(ttpy)(CN)_3Mn~Ⅲ(salen)]

Tricyanide building block K[Ru(ttpy)(CN)_3] and [Mn~Ⅲ(salen)](ClO_4) have been used to design and synthesize a heterobimetallic one-dimensional(1D) zigzag chain complex 1,[Ru~Ⅱ(ttpy)(CN)_3 Mn~Ⅲ(salen)](ttpy = 4?-(p-tolyl)-2,2?:6?,2??-terpyridine, salen = N,N?-ethylenebis-(salicylideneaminato)dianion). Single-crystal X-ray diffraction analysis shows complex 1 crystallizes in orthorhombic Pbca space group and the asymmetric unit of 1 contains one[-NC-Ru~Ⅱ(ttpy)(CN)(m-CN)-Mn ~Ⅲ-(salen)-] molecule. In the structure of 1, each [Ru ~Ⅱ(ttpy)(CN)_3]~-connects two [Mn~Ⅲ(salen)]~+ with two cyanide groups in a cis-conformation, and in turn each[Mn~Ⅲ(salen)]~+ unit links two [Ru~Ⅱ(ttpy)(CN)_3]~-building blocks in a trans-conformation, resulting in a 1D [-NC-Ru~Ⅱ-CN-Mn~Ⅲ-]_n chain. Furthermore, the electronic absorption spectra and luminescence spectroscopy of complex 1 have also been studied.