Isolation and crystal structure of two novel oxo-persulphido amidrazone tungstate complexes, WO(S2)2{RC(NH)NHNH} (R = CH3, CH3CH2)
摘要:
A new method for preparing amidrazone is described. The amidrazone oxopersulphido complexes were obtained from the new reaction system of WS42-/P2S5/H2NNH2.2HCl with CH3CN or CH3CH2CN in air at ambient temperature. In the two complexes WO(S-2)(2){CH3C(=NH)NHNH} (I) and WO(S-2)(2){CH3CH2C(=NH) NHNH} (II), the coordination polyhedron of tungsten is pentagonal bipyramidal, where the two axial ligands are the terminal oxo atom and the N(H) coordinating atom of NHNH in amidrazone. The spectroscopic properties of the complexes are also reported.