摘要
报道了２个取代三联吡啶配体（４′－苯基－２，２′∶６′，２″－三联吡啶（Ｌ１）和４′－二茂铁基－２，２′∶６′，２″－三联吡啶（Ｌ２））的Ｃｏ（Ⅱ）配合物（［Ｃｏ（Ⅱ）（Ｌ１）２］（ＣｌＯ４）２·４ＣＨ３ＣＮ（１）和［Ｃｏ（Ⅱ）（Ｌ２）２］（ＣｌＯ４）２Ｈ２Ｏ（２））的合成及配体Ｌ２和配合物１和配合物２的晶体结构．电化学研究表明：在配合物２中，由于Ｃｏ２＋的作用，二茂铁基的氧化电位较配体Ｌ２中的二茂铁基的氧化电位有０．１４Ｖ的正移动．同时发现，在配合物１中，Ｃｏ２＋的氧化还原电位较２中Ｃｏ２＋的氧化还原电位有０．０６Ｖ的正移动．说明在配合物２的二茂铁中的Ｆｅ（Ⅱ）与Ｃｏ（Ⅱ）之间存在着由分子片断传递的电子相互作用．
The syntheses, structures and electrochemistry of two Co(Ⅱ) complexes Co(Ⅱ)(L1) 2 (ClO 4) 2\54CH 3CN(1) and Co(Ⅱ)(L2) 2 (ClO 4) 2\5H 2O(2) prepared from ligands L1(4′ phenyl 2,2′∶6′,2″ terpyridine) and L2(4′ ferrocenyl 2,2′∶6′,2″ terpyridine) are reported in this paper. The electrochemical investigation shows that the oxidation potential of ferrocene unit in 2 has a 0 14 V positive shift from that of ferrocenyl group in L2 for the introduction of Co 2+ and, in the meantime, that the redox potential of cobalt centre in complex 2 has a 0 06 V negative shift from that of cobalt centre in complex 1. This observation strongly suggests that in complex 2, there is an intermetallic interaction between Co(Ⅱ) and Fe(Ⅱ) conducted by the molecular fragment.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第9期1369-1374,共6页
Chemical Journal of Chinese Universities
