氧钒席夫碱聚合物[VO(L)·0.25CH_3CN]_n的合成及晶体结构

Synthesis and Crystal Structure of a Polymeric Oxovanadium Complex [VO(L)·0.25CH_3CN]_n with Schiff Base as Ligand

在甲醇、乙腈和DMSO混合溶剂中,偏钒酸版与双2-羟基-1-萘甲醛丙二酰腙在1,3-丙二胺存在下反应,得到一个新的氧钒席夫碱聚合物[VO(L).0.25CH3CN]n.通过红外光谱和X-射线单晶衍射对其进行了表征.晶体结构表明该化合物属于正交晶系,Pnma群,晶胞参数为:a=0.758 97(14)nm,b=2.232 7(4)nm,c=1.399 6(3)nm,V=2.371 7(8)nm3,Z=4.四齿配体和两个氧原子与钒配位,钒中心形成略扭曲的八面体构型,该化合物为一条[VO(L)]n链.配合物的热稳定和电化学性质在本文中也得到了研究和讨论.CCDC:703827.

The reaction of ammonium metavanadate with bis （2-hydroxy-l-napthaldehyde） malnonoyldihydrazone and 1,3- propanediamine in methanol/acetonitrile/DMSO yields a novel polymeric oxovanadium schiff base complex [VO（L）·0.25CH3CN]n. The complex is characterized by IR spectroscopic method and X-ray crystal structure determination. It crystallizes in the orthorhombic space group Pnrna with a = 0.758 97（14）nm, b = 2.232 7（4）nm, c = 1.399 6（3） nm, V = 2.371 7（8） nm3 , Z = 4. The vanadium atom adopts a distorted octahedral geometry coordinated by the tetradentate ligand and two oxygen atoms. The structure suggests that the complex forms a linear chain structure [ VO （L） ] n. The TGA properties and cyclic voltametric behavior of the complex have been further studied and discussed. CCDC ： 703827.