Search

The synthesis and determination of the crystal structures of eight mixed-ligand divalent coordination polymers based on 3,5-diiodobenzoic acid (HL) and ancillary nitrogen ligands (bpy = 4,4′-bipyridine, bpe = 1,2-bis(4-pyridyl)ethene, p-bix = 1,4-bis(imidazol-1-ylmethyl)-benzene, bpp = 1,3-bi(4-pyridyl)propane, bbi = 1,1′-(1,4-butanediyl)bis(imidazole), namely, [Zn(L)2(p-bix)]n (1), [Zn3(L)6(bpp)]n (2), [Cd1.5(L)3(bpp)]n (3), [Ni(L)2(bpe)·H2O]n (4), [Co(L)2(p-bix)]n (5), [Co1.5(L)3(bpy)0.5]n (6), [Mn3(L)6(bpe)]n (7), and [Mn3(L)6(bbi)]n (8), have been reported. They were well characterized by elemental analysis, IR spectra, and single crystal X-ray diffraction. Compounds 1–5 all exhibit three-dimensional (3D) supramolecular structures based on interchain type II I···I halogen bond interactions, or hydrogen bonding and type I I···I contacts, respectively. Moreover, π···π interactions are found in the structure of 3. In compounds 6–8, similar two-dimensional (2D) metal–organic layers are expanded to 3D supr...

A series of copper coordination polymers of [Cu3(OH)2(5-iipa)2(phen)3(H2O)·4.5(H2O)]n (1) [Cu(5-iipa)(phen)(H2O)]n (2), [Cu(5-iipa)(bpe)·2(H2O)]n (3), [Cu(5-iipa)(p-bix)]n (4), [Cu(5-iipa)(bbi)]n (5), [Cu2(5-iipa)2(bbi)·0.5(H2O)]n (6), and [Cu(5-iipa)(bpp)·H2O]n (7) (phen = 1,10-phenanthroline, bpe = 1,2-bis(4-pyridyl)ethane, p-bix = 1,4-bis(imidazol-1-ylmethyl)-benzene, bbi = 1,1′-(1,4-butanediyl)bis(imidazole), bpp = 1,3-bi(4-pyridyl)propane) were hydro(solvo)thermally synthesized through the reaction of divalent copper salts, 5-iodo-isophthalic acid (5-H2iipa), and N-donor ancillary ligands. Single-crystal X-ray diffraction analyses on these complexes revealed that noncovalent interactions were found to be predominant in constructing these supramolecular architectures. Compounds 1–5 all possess three-dimensional (3D) supramolecular structures based on O···I, I···I, I···π, and π···π interactions. Compound 6 exhibits a complicated three-dimensional (3D) framework with a new (6·72)2(63·72·8)2(63·78·82·92)...

A series of four novel cobaltic coordination polymers based on 5-iodo-isophthalic acid (5-iipa) and 1,1′-(1,4-butanediyl)bis(imidazole) (bbi), namely, [Co(5-iipa)(bbi)·3(H2O)]n (1), [Co2(5-iipa)2(b...