1429428-78-3Relevant articles and documents
Effect of auxiliary ligands on cobalt(II) coordination polymers with 5-(imidazol-1-ylmethyl)isophthalate
Kuai, Hai-Wei,Hou, Chao,Sun, Wei-Yin
, p. 1268 - 1275 (2013)
The reactions of cobalt(II) salt with 5-(imidazol-1-ylmethyl)isophthalic acid (H2L) as a main ligand and 1,10-phenanthroline (phen), 2-(pyridin-2-yl)-1H-benzo[d]imidazole (pybim) or 1,2-di(pyridin-4-yl)ethylene (dpe) as auxiliary ligand by hydrothermal method lead to the formation of four new complexes [Co(L)(phen)]·2H2O (1), [Co(L)(pybim)(H 2O)]·2H2O (2), [Co(L)(pybim)]·H2O (3) and [Co(L)(dpe)0.5] (4), among them 2 and 3 were obtained by changing the metal-to-ligand ratio. While in the absence of any auxiliary ligand, complex [Co(L)] (5) was obtained. The complexes 1-5 have been characterized by single crystal and powder X-ray diffractions, IR, elemental and thermogravimetric analyses. Complexes 1 and 2 have double- and single-chain structures, while 2 and 3 are 3-connected uninodal and (3,6)-connected binodal 2D networks with (63) and [(63)(66)] topology, respectively. All the complexes 1-4 show 3D supramolecular structures through hydrogen bonding/π-π interactions. Complex 5 shows a (5,5)-connected binodal 3D net with [(45)(65)] topology. The results imply that the auxiliary ligand as well as the metal-to-ligand ratio has great impact on the structure of the complexes.
