Trinuclear Complexes M[Co(en)2(SO3)2]2(H2O)2?¤4H2O (M=Mn, Fe, Co, Ni, Cu, Zn): Their Utilization for Stoichiometric Spinel Oxides and the Crystal Structure of Ni[Co(en)2(SO3)2]2(H2O)2?¤4H2O

摘要

Trinuclear complexes of the eeneral formula M[Co(en)2(SO3)2]2(H2O)2·4H2O (M=Mn, Fe, Co, Ni, Cu, Zn) were synthesized. The crystal structure of one of the compounds in the series, Ni[Co(en)2(SO3)2]2(H2O)2·4H2O were determined by single crystal X-ray diffraction studies. It crystallizes in a monoclinic unit cell (a=10.079(l), b=l1.560(l), c=12.699(l) ∈, モ=101.8(1)∑, V=1448.4(2) ∈3). In the structure, a nickel atoms is bonded to two [Co(en)2(SO3)2]-1 through the oxygen atoms of the sulfite ligands that have Co-S bonds. Thermolysis of the complexes for M=Mn, Co, Cu, Zn in air at as low as 750 ∩ resulted in spinel oxides while the M=Ni compound resulted in a solid solution of rock salt type COO and NiO. The Fe complex did not produce a single phase oxide but a mixture of M203 (M=Fe, Co) and spinel type compound.