Supramolecular isomerism in self-assembled complexes from 4,4 '-dipyridyl disulfide and M(hfac)(2): Coordination polymers (M = Mn) and metallamacrocycles (M = Co, Ni)

R Horikoshi
T Mochida
M Kurihara
M Mikuriya

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)(2)4pds](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).4CHCl(3) (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.

CRYSTAL GROWTH & DESIGN

AMER CHEMICAL SOC

5

1

243

249

10.1021/cg0499109

https://doi.org/10.1021/cg0499109
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