Solvothermal syntheses,crystal structures,and properties of new [Mn(dien)_2]~(2+) complexes

摘要

The two new compounds Mn(dien)_2[MoS_4](1) and Mn(dien)_2[Mo_2O_2S_6] (2) (dien=diethylenetriamine) were prepared under solvothermal conditions.Both compounds were obtained as phase-pure prducts.The structures consist of new [Mn(dien)_2]~(2+) cations and isolated tetrahedral [MoS_4]~(2-) (1) or [Mo_2O_2S_6]~(2-) (2) anions.Between the anions and the catins,hydrogen bonding is observed.Compound 1 crystallizes in the tetragonal space group I4(a=10.219(2),c=9259(2) A,Z=2),whereas 2 crystallizes in the monoclinic space group P2_1/c(a=8.703(2),b=18.390(4),c=14.603(3),beta=103.18(3)degZ=4).The thermal behaviour of the thiomolybdates was investigated using difference thermoanalysis (DTA) and thermogravimetry (TG).Both compounds decompose under argon with a single endothermic signal in the DTA curve (peak maximum:252 (1) and 242degC(2)).