Complexes with heterocyclic nitrogen ligands—III. Cationic rhodium(I) derivatives and applications in catalysis
作者:Sergio A. Moya、Ruben Pastene、Renato Sariego、Rebeca Sartori、Pedro Aguirre、Hubert Le Bozec
DOI:10.1016/0277-5387(95)00428-9
日期:1996.6
spectroscopic properties of mononuclear cationic complexes of rhodium(I) coordinated to the diolefin 2,5-norbornadiene (NBD) and to the heterocyclic nitrogen ligands 6,7-dihydrodipyrido-[2,3-b:3′,2′-j]-1,10-phenanthroline (2-4N), 7,8-dihydro-6H-cyclohepta-[2,1-b:3,4-b]-di-1,8-naphthyridine (3–4N) and 2,2′-bi-(3-methyl)1,8-naphthyridine (Me-4N) are described. The complexes show the characteristic intraligand
与二烯烃2,5-降冰片二烯(NBD)和杂环氮配体6,7-二氢双吡啶-[2,3-b:3',2'配位的铑(I)单核阳离子配合物的制备和光谱性质-j] -1,10-菲咯啉(2-4N),7,8-二氢-6H-cyclohepta- [2,1-b:3,4-b] -di-1,8-萘啶(3–4N)和2,2'-双-(3-甲基)1,8-萘啶(Me-4N)进行了说明。配合物显示出配体的特征性配体内带和对溶剂变化不敏感且强度低的电子低能带,其可被分配给配体场带。NMR性质与IR结果一致,IR结果显示了络合物中两个萘啶片段的等效性。电化学上,所有复合物在+1.5至-2.4 V相对于Fc + / Fc的电势区域中均显示两个还原和一个氧化波。这些配合物有效地催化了水煤气变换反应(WGSR)和在WGSR条件下硝基苯选择性还原为苯胺。