Homo- and heterobimetallic azines derived from ferrocene and cyrhetrene: Synthesis, structural characterization and electrochemical studies

被引:3
|
作者
Gomez, Johana [1 ]
Sierra, Diego [2 ]
Fuentealba, Mauricio [1 ]
Artigas, Vania [1 ]
Hugo Klahn, A. [1 ]
机构
[1] Pontificia Univ Catolica Valparaiso, Fac Ciencias, Inst Quim, Lab Quim Organomet, Ave Univ 330,Campus Curauma, Valparaiso, Chile
[2] Univ Valparaiso, Fac Ciencias, Inst Quim & Bioquim, Lab Quim Organomet & Catalisis, Ave Gran Bretana 1111, Valparaiso, Chile
关键词
Cyrhetrenyl azines; Ferrocenyl azines; Single-crystal X-ray diffraction; Electrochemical study; COMPLEXES; NMR; CL;
D O I
10.1016/j.jorganchem.2018.12.006
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A new series of asymmetrical heterobimetallic azines [(eta(5)-C5H5)Fe{(eta(5)-C5H4)-C(R) = N-N=C(R-1)-(eta(5)-C5H4)Re(CO)(3)}] (1-3) and symmetrical homobimetallic cyrhetrenyl azines [{(eta(5)-C5H4)-C(R) = N}Re(CO)(3)](2) (4, 5) have been synthesized and were spectroscopically characterized by FT-IR, NMR, EI-MS and cyclic voltammetry. The molecular structures of 1 and 4 were determined using single-crystal X-ray diffraction technique. Based on the oxidation potential of the ferrocenyl units and the high degree of planarity of the [(C5H4)-C(H) = N-N=C(H)-(C5H4)] system in complex 1, we inferred electronic communication between the electron-withdrawing cyrhetrenyl groups through the pi-conjugated azine bridge. The compounds display an (E,E)-configuration about the >C=N-bond, an s-trans conformation for the N-N bond and an anti-conformation for the two organometallic fragments. (C) 2018 Published by Elsevier B.V.
引用
收藏
页码:65 / 70
页数:6
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