Mono- and Binuclear Dimethylthallium(III) Complexes with o-Benzoquinone-TTF-o-Benzoquinone Ligand; Synthesis, Spectroscopy and X-ray Study
作者:Svetlana V. Klementieva、Vyacheslav A. Kuropatov、Georgii K. Fukin、Galina V. Romanenko、Artem S. Bogomyakov、Vladimir K. Cherkasov、Gleb A. Abakumov
DOI:10.1002/zaac.201000319
日期:2010.11.11
Q-TTF-Q with one or two equivalents of Me3Tl. Complexes 1 and 2 were characterized by IR and electronic absorption spectroscopy, EPR, and magnetic measurements. The molecular structures of 1 and 2 were determined by single-crystal X-ray diffraction. It was found that mono-semiquinonato derivative 1 partially disproportionates into Q-TTF-Q and binuclear complex 2 in THF solution. According to variable temperature
基于二邻醌和四硫富瓦烯 (TTF) 桥的新型单核和双核半醌二甲基铊络合物 (Q-TTF-SQ)TlMe2 (1) 和 Me2Tl(SQ-TTF-SQ)TlMe2 (2),4,4 ',7,7'-四叔丁基-2,2'-bis-1,3-benzodithiol-5,5',6,6'-tetraone Q-TTF-Q半醌酸单钠和二钠 (Q-TTF-SQ)Na 和 Na(SQ-TTF-SQ)Na 以及一或两当量的 Me2TlCl。通过 Q-TTF-Q 与一或两个等价的 Me3Tl 相互作用可以获得相同的产物。配合物 1 和 2 的特点是红外和电子吸收光谱、EPR 和磁性测量。1和2的分子结构由单晶X射线衍射确定。发现单半醌衍生物 1 在 THF 溶液中部分歧化为 Q-TTF-Q 和双核复合物 2。根据变温磁化率测量和 EPR 数据,化合物 1 在 50-300 K 范围内具有 S = 1/2 态的顺磁行为,而化合物