Three new metal coordination polymers of bifunctional imidazolate/tetrazolate bridges: the only example of a three-dimensional framework based on rare [Co4(μ3-OH)2(μ2-Cl)2]4+ mixed oxo-chloro-clusters†
*a
Hua-Hong
Zou
*b
and
Abstract
Three new metal coordination polymers [Ni(μ2-L)2(H2O)2]n (1, HL = 1-tetrazole-4-imidazole-benzene), [Co(μ2-L)2]n (2), and [Co4(μ3-OH)2(μ2-Cl)2(μ5-L)2(μ2-L)2]n·7nH2O (3) were hydrothermally synthesized and structurally characterized. 1 displays a neutral [Ni(μ2-L)2(H2O)2]n chain built up from the Ni2+ ions bridged by deprotonated L− ligands, while 2 shows another rare neutral [Co(μ2-L)2]n chain based on Co2+ ions connected by two different coordination modes of the L− ligand. 3 exhibits a rare [Co4(μ3-OH)2(μ2-Cl)2]4+ mixed oxo-chloro-cluster-based three-dimensional framework with large elliptical channels, which are filled by unprecedented chilopod [(H2O)7]n chains. Both 1 and 2 show antiferromagnetic behavior, while 3 exhibits unusual spin-canting.
![Graphical abstract: Three new metal coordination polymers of bifunctional imidazolate/tetrazolate bridges: the only example of a three-dimensional framework based on rare [Co4(μ3-OH)2(μ2-Cl)2]4+ mixed oxo-chloro-clusters](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C9RA01327J&imageInfo.ImageIdentifier.Year=2019)
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