measurements. The physical properties of the complexes are consistent with the +5 oxidation state of the metal ion in them. The X-ray structure of a representative complex, [VO2(phsal)] (R = H) has been determined. The metal centre in [VO2(phsal)] is in square-pyramidal N2O3 coordination sphere. The monoanionic pyridine-N, imine-N and phenolate-O donor phsal− and one of the two oxo groups form the N,N,O
具有通式[VO Dioxovanadium(V)络合物2(phsalR)]已通过一个摩尔当量的反应是在52-63%的收率合成各VOSO的4 ·5H 2 O,4-R-2-(
吡啶-2-基在
水-
乙腈(1:1.3)混合物中的酰基-
肼基甲基)-
苯酚(HphsalR,其中R = H,OCH 3,Cl,Br和NO 2)和N(C 2 H 5)3。通过元素分析,磁化率和光谱(IR,UV-Vis,NMR和EPR)测量对复合物进行了表征。配合物的物理性质与其中
金属离子的+5氧化态一致。代表性复合物的X射线结构,[VO 2(phsal)](R = H)已确定。[VO 2(phsal)]中的
金属中心位于方锥N 2 O 3配位球中。单阴离子
吡啶N,
亚胺-N和
酚-O供体phsal -和两个氧代基团之一形成N,N,O,O-基面,而另一个氧代基团满足第五心尖配位位点。由于氧代基团在V–O–V桥基的基础平面上的参与,该方形