Supramolecular isomerism in self-assembled complexes from 4,4'-dipyridyl disulfide and M(hfac)2: Coordination polymers (M = Mn) and metallamacrocycles (M = Co, Ni)
Supramolecular isomerism in self-assembled complexes from 4,4'-dipyridyl disulfide and M(hfac)2: Coordination polymers (M = Mn) and metallamacrocycles (M = Co, Ni)
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DOI：
10.1021/cg0499109
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发表时间：
2005
影响因子：
3.8
通讯作者：
R. Horikoshi;T. Mochida;and Makoto Kurihara;M. Mikuriya
中科院分区：
文献类型：
--
作者：
R. Horikoshi;T. Mochida;and Makoto Kurihara;M. Mikuriya
本文详细研究了M（hfac）_2（hfac = 1，1，1，5，5，5-六氟乙酰丙酮）与4pds（4pds = 4，4 '-联吡啶二硫化物）的超分子反应条件与产物结构的关系。结果表明，当M = Mn和Cu时，可选择性地得到配位聚合物;当M = Co和Ni时，可得到金属大环化合物。发现Mn配合物[Mn（hfac）24 pds]n在不同的反应溶剂中表现出超分子异构现象，甲醇生成的化合物具有锯齿形手性链（1），四氯化碳生成的化合物具有螺旋形手性链（2）。金属大环化合物[M（hfac）2（4pds）]2·4CHCl 3（M = Co 3; M = Ni 4）和[M（hfac）2（4pds）]2·H2 O（M = Co 5; M = Ni 6）由两个M（hfac）2单元和两个手性相同的配体组成.大环化合物是手性的，并且根据空腔上方和下方容纳的客人而略微改变它们的形状。
Correlations between the reaction conditions and resultant structures have been investigated in detail for supramolecules of M(hfac)2 (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate) with 4pds (4pds = 4,4‘-dipyridyl disulfide). It was revealed that coordination polymers are selectively obtained for M = Mn and Cu and metallamacrocycles are obtained for M = Co and Ni. The Mn complex [Mn(hfac)24pds]n was found to exhibit supramolecular isomerism depending on the reaction solvent, forming compounds with zigzag achiral chains (1) from methanol and helical chiral chains (2) from tetrachloromethane. The metallamacrocycles [M(hfac)2(4pds)]2·4CHCl3 (M = Co 3; M = Ni 4) and [M(hfac)2(4pds)]2·H2O (M = Co 5; M = Ni 6) are composed of two M(hfac)2 units and two ligands with the same chirality. The macrocycles are chiral and change their shape slightly depending on the guests accommodated above and below the cavities.