Three cobalt(II) coordination polymers constructed from flexible bis(thiabendazole) and dicarboxylate linkers: crystal structures, fluorescence, and photocatalytic properties

Synthesis, Structures, and Photocatalytic Properties of Zinc(II) and Cobalt(II) Supramolecular Complexes Constructed with Flexible Bis(thiabendazole) and Dicarboxylate Linkers

“…In particular, flexible bis(thiabendazole) derivatives have proved to be well suited building blocks in the formation of CPs. [18,19] Firstly, the larger conjugated π systems can facilitate their photophysical properties; secondly, the two nitrogen atoms of the benzimidazolyl and thiazole groups can coordinate with either one or two central metal atoms; thirdly, the flexible nature of the alkyl (-CH 2 -) n spacer allows them to bend and rotate freely so as to accommodate different central metal atoms in disparate directions, forming a range of architectures with versatile topologies. In addition, aromatic dicarboxylates ligands, like 3-nitro phthalic acid (3-H 2 npa) and 5-nitro isophthalic acid (5-H 2 nipa) are often used as multifunctional organic ligands, because of their various coordination modes and strong coordination ability to metal ions.…”

“…In addition, aromatic dicarboxylates ligands, like 3-nitro phthalic acid (3-H 2 npa) and 5-nitro isophthalic acid (5-H 2 nipa) are often used as multifunctional organic ligands, because of their various coordination modes and strong coordination ability to metal ions. [18,20] As a part of ongoing studies in this area, herein three coordination complexes derived from flexible bis(thiabendazole) ligands and dicarboxylate linkers: [Zn(btbp)(3-npa)] n (1), [Co(btbh)(3-npa)] n (2), and {[Co(btbb)(5-nipa)(H 2 O)]· H 2 O} n (3) (btbp = 1,3-bis(thiabendazole)propane, btbh = 1,6-bis(thiabendazole)hexane, btbb = 1,4-bis(thiabendazole) butane, 3-H 2 npa = 3-nitro phthalic acid, and 5-H 2 nipa = 5-nitro isophthalic acid) are reported. The three complexes were characterized by elemental analysis, IR spectroscopy, thermogravimetric analyses (TGA), and powder X-ray diffraction (PXRD).…”