Journal of Coordination Chemistry p. 2771 - 2779 (2012)
Update date:2022-08-17
Topics:
Li, Ya-Meng
Yu, Ya-Hui
Peng, Yu-Han
Wu, Ben-Lai
Zhang, Hong-Yun
Reactions of a bis-pyridyl-bis-amide ligand, N,N′-bis(pyridin-3-yl)- 2,6-pyridinedicarboxamide (bppdca) with nickel(II) and cobalt(II) salts resulted in a tetragonal molecular cage, [Ni2(bppdca)4(SCN) 4] (1), and a 1-D polymeric macrocyclic complex, [Co(bppdca)(SO 4)(CH3OH)(DMF)]n ·nCH3OH (2) (DMF=N,N′-dimethylformamide). Compound 1 features a tetragonal cage-like structure. In each cage, four bppdca ligands are twisted in the same direction, which endow the cage with chirality. However, because the twist or screw directions of adjacent cages are contrary, 1 is a mesomer and exhibits no chirality on the whole. Compound 2 possesses a 1-D, double-chain structure containing Co4(SO4)4(bppdca)2 macrocyclic subunits.
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