Metal-controlled structural diversity in Co(II) and Zn(II) complexes with mixed N- and O-donors: Synthesis, characterization and property

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

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.

A novel 3-D photoluminescent cuprous chloride polymer based on bifunctional imidazolate/tetrazolate bridges

The interconnection of rare [Cu₂Cl]⁺cations and multidentate 1-tetrazole-4-imidazole-benzene bridging ligands gives a novel 3-D cuprous chloride polymer with a bimodalfsc-3,5-Cmce-2 topological type (L⁻ligand and Cu⁺ion: orange and blue).

Dicarboxylate ligand-modulated assembly of new luminescent zinc(ii) coordination polymers with in situ formed tetrazole ligands: an experimental and theoretical study

In situ hydrothermal reactions of 4-(1H-imidazol-1-yl)benzonitrile, Zn(NO₃)₂ and NaN₃ with H₂DPA or H₂PYDC gave rise to two new zinc(ii) coordination polymers, which exhibit different intriguing architectures and photoluminescence properties.

A new cube-based dodecanuclear cobalt(ii) cluster with azide and tetrazolate ligands exhibiting ferromagnetic ordering

A novel Co₁₂ cluster was composed of three identical Co₄ cubane units bridged by μ₆-CO₃²⁻ and tetrazolate bridges and exhibits long-range ferromagnetic ordering at about 9 K.