Synthesis, structure and electrochemistry of new diferrocenyl pyridine derivatives
作者:Ya-Qi Wang、Li-Min Han、Quan-Ling Suo、Ning Zhu、Jian-Min Hao、Rui-Jun Xie
DOI:10.1016/j.poly.2013.02.043
日期:2013.4
Four diferrocenyl pyridine derivatives, 4,6-diferrocenyl-2-phenylpyridine (1), 3,6-diferrocenyl-2-phenylpyridine (2), 4,6-diferrocenyl-2-methylpyridine (3) and 3,6-diferrocenyl-2-methylpyridine (4) were synthesized via dicarbonylcyclo pentadienylcobalt or Co-2(CO)(6)(mu(2)-eta(2)-ferrocenylacetylene) mediated [2+2+2] cycloaddition reaction and characterized by FT-IR, NMR, MS, CV, elemental analysis and X-ray single crystal diffraction analysis (1, 2, 3). Compounds 1, 2, 4 are new diferrocenyl pyridine derivatives and the molecular structures of 1, 2, 3 have been determined for the first time. It has been shown that cobalt-mediated [2+2+2] cycloaddition reaction is an efficient, simple new method to prepare diferrocenyl pyridine derivatives. The electrochemistry results reveal that the electronic communication between the two nonequivalent ferrocenyl units in 1-4 is electrostatic interactions. (c) 2013 Elsevier Ltd. All rights reserved.