New chromotropic behavior of manganese complexes with 1,4,7-triazacyclononane-N,N′,N″-tricarboxylates
New chromotropic behavior of manganese complexes with 1,4,7-triazacyclononane-N,N′,N″-tricarboxylates
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锰与1,4,7-三氮杂环壬烷-N,N′,N″-三羧酸盐配合物的新变色行为
DOI：
10.1016/s0020-1693(02)00953-2
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发表时间：
2002
影响因子：
2.8
通讯作者：
K. Umezawa
中科院分区：
文献类型：
--
作者：
Y. Fukuda;M. Hirota;Miyuki Kon;A. Nakao;K. Umezawa
报道了一种含1，4，7-三氮杂环-N，N‘，N“-三丙酸酯(TACNTP)的锰(III)配合物的合成和表征。配合物[Mn(Acntp)](II)(1)在面状N3O3施主空间群为P3c1的六方环境中结晶，明显违反了Jahn-Teller效应。络合物1的还原稳定性比相应的络合物[MN(TACNTA)](2)更稳定，其中，TACNTA是TACNTP的三乙酸酯同系物。两种配合物在水溶液中均表现出可逆的电致变色性能。此外，化合物1在甲醇溶液中也是可逆还原的。它们在各种溶剂中也表现出溶致变色现象。络合物的UV-Vis吸收峰与溶剂的受体数相关。
Synthesis and characterization of a manganese(III) complex containing 1,4,7-triazacyclononane-N,N′,N″-tripropionate (tacntp) are reported. The complex [Mn(acntp)](II) (1) crystallizes in a hexagonal environment of a facial N3O3donor set with space group P3c1, apparently violating the Jahn–Teller effect. Complex 1 is more stable for reduction than the corresponding complex [Mn(tacnta)] (2) where, tacnta is a triacetate homologue of tacntp. Both complexes showed reversible electrochromism in aqueous solutions. In addition, complex 1 was reversibly reduced in a methanol solution too. They also showed solvatochromism in a variety of solvents. The UV–Vis absorption maxima of the complexes were correlated to the acceptor number of the solvent.