Synthesis and crystal structure of polymer cobalt(II) complex, 1,2,4,5-benzenetetracarboxylate hexaimidazole tetraaqua cobalt (II) tetrahydrate
✍ Scribed by Wang Shun; Hu Mao-Ling; Yuan Jl-Xin; Cheng Ya-Qian; Lin Juan-Juan; Huang Zhen-Yan
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 276 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0256-7660
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✦ Synopsis
Abstract
The crystal structure of the title complex { [ Co (TCB)~2/2‐~(IMI)~2~(H~2~O)~2~][Co(IMI)~4~(H~2~O)~2~]}[(H~2~O)~4~ (where TCB = 1,2,4,5‐benzenetetracarboxylic anion; IMI= imidazole) has been determined by X‐ray diffraction method. Crystal data for {[Co(TCB)~2/2~(IMI)~2~(H~2~O)~2~][Co(IMI)~4~(H~2~O)~2~]}‐(H~2~O)~4~: triclinic, space group P 1, a = 1.0647(2) nm, b =1.1165(1) nm, c = 1.00361(1) nm, α = 91.56(1)°, β = 111.34(1)°, γ= 115.642(10)°, V = 0.9772(3) nm^3^, Z = l. The polymer cobalt(II) complex has a novel three‐dimension network structure. Co(1) atom and Co(2) atom both are coordinated in an octahedral arrangement and located in the center of the coordination anion and the center of the coordination cation, respectively. Moreover four carboxyl groups of TCB are divided into two types, two para‐carboxyl groups bridge Co (1) atom in monodentate fashion and other two para‐carboxyl groups are in free.
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## Abstract The reaction of the new, bis(bidentate), potentially dinucleating ligand 4‐isobutyl‐3,5‐di(2‐pyridyl)‐4__H__‐1,2,4‐triazole (ibdpt) with M(ClO~4~)~2~·6H~2~O (M = Co^II^, Ni^II^ or Cu^II^) in a1:1 molar ratio in MeCN affords the dinuclear complexes [Co^II^~2~(ibdpt)~2~(MeCN)~2~(H~2~O)~2~
Some transition metal salts (Fe 2+ , Co 2+ , and Cu 2+ ) of 1,2,4,5benzenetetracarboxylic acid (pyromellitic acid) have been synthesized: hexaaquairon(II) dihydrogen 1,2,4,5-benzenetetracarboxylate (I), hexaaquacobalt(II) dihydrogen 1,2,4,5-benzenetetracarboxylate (II), triaquacopper(II) dihydrogen