Conformational isomerism of 1,2-bis(imidazol-1′-yl)ethane in five-coordination polymers: Influence of metal ions and m-isophthalate ligands bearing different substituents

Crystal structure of catena-(μ3-5-bromoisophthatato-κO,O′: O′′,O′′′′)-(1,2-bis(imidazol-1-yl)ethane-κN:N′)cobalt(II), C16H13CoN4O4Br

C16H13CoN4O4Br, orthorhombic, Pnna (no. 52), a = 16.921(2) Å, b = 19.211(2) Å, c = 10.2928(12) Å, V = 3345.9(7) Å3, Z = 8, R gt(F) = 0.0335, wR ref(F 2) = 0.0713, T = 296 K.

A new cobalt(II)-containing coordination polymer composed of dinuclear metal units: synthesis, crystal structure, and magnetic properties with DFT calculations

A new Co(II)-based compound with a 3-phenyl-5-(pyridin-4-yl)-1,2,4-triazole (4-Hppt) and isophthalic acid (H2ip) mixed ligand, [Co(4-Hppt)2(ip)] (1), has been synthesized and structurally and magnetically characterized. The structure of compound 1 consists of one-dimensional coordination chains based on the Co2 units bridged by dual carboxylate groups, where the pyridyl nitrogen atoms in 4-Hppt ligands are located in the axial coordination sites of the octahedral Co(II) nodes. Magnetic investigation suggests that the magnetic coupling derived from the dinuclear Co(II) ions is a moderately antiferromagnetic exchange in the title compound. Moreover, DFT calculations have been performed on the compound to offer a qualitatively theoretical explanation of the magnetic behavior.