Monomeric and polymeric structures of oxovanadium(IV) complexes with Schiff base ligands derived from (R,R)-2,4-pentanediamine
作者:Masanobu Tsuchimoto、Ryuichi Kasahara、Kiyohiko Nakajima、Masaaki Kojima、Shigeru Ohba
DOI:10.1016/s0277-5387(99)00226-0
日期:1999.10
monomeric structure in the solid state. The 3-EtO substituted complex has both monomeric and polymeric structures. On the other hand, the other [VOXsal-(R,R)-2,4-ptn}] (X=H, 3-MeO, 5-Br, 5-NO2) complexes have only polymeric structures. X-ray crystal structure analysis of [VO5-MeOsal-(R,R)-2,4-ptn}]⋅CH3OH (1) was carried out. Complex 1 has a monomeric five-coordinate square–pyramidal structure. The six-membered
摘要在水杨醛部分[VO Xsal-(R,R)-2,4-ptn}](H2 Xsal -(R,R)-2,4-ptn}:N,N′-二-二水杨基亚烷基-(R,R)-2,4-戊二胺; X = 5-MeO(甲氧基),5-Br和5 -NO 2)。比较了V(V)/ V(IV)配合物的结构和氧化还原电势与其他[VO Xsal-(R,R)-2,4-ptn}]的结构和氧化还原电势(X = 3-EtO (乙氧基),3-MeO和H)。在水杨醛部分的5-位具有供电子基团的5-MeO取代的配合物形成固态的单体结构。3-EtO取代的配合物同时具有单体和聚合物结构。另一方面,其他[VO Xsal-(R,R)-2,4-ptn}](X = H,3-MeO,5-Br,5-NO 2)络合物仅具有聚合物结构。进行[VO 5-MeOsal-(R,R)-2,4-ptn}]·CH 3 OH(1)的X射线晶体结构分析。配合物1具有