作者:Loreto Ballester、Angel Gutierrez、Reyes Jimenez、Maria Felisa Perpiñan
DOI:10.1016/0277-5387(95)00192-u
日期:1996.1
The rhodium derivatives [Rh(nbd)(N-N)]X, (nbd = norbornadiene, N-N = bpy, phen, X = ClO4, BPh(4))react with anionic TCNQ(-) (7,7,8,8-tetracyanoquinodimethanido) , with total or partial substitution of the counterion but no change in the metal coordination sphere. On the contrary, rhodium derivatives with monodentate nitrogen-donor ligands, such as isoquinoline and substituted pyridines, [Rh(nbd)(N)(2)](+) (N = 2,5-Me(2)C(5)H(3)N), suffer substitution of these ligands and formation of [Rh(nbd)(TCNQ)], for which a dimeric structure with the TCNQ acting as bridges is proposed. By using the mixture TCNQ(radical anion)/TCNQ degrees the complexes with bidentate amines give rise to [Rh(nbd)(N-N)](TCNQ)(2) whose conductivity values are indicative of a higher degree of electronic delocalization in the organic donor units.