Yan-Ling Zhou

Magneto−Structural Correlation in a Metamagnetic Cobalt(II)-Based Pillared Trilayer Motif Constructed by Mixed Pyridyl-Type Carboxylate Ligands

The first structurally authenticated example of coordinated polymer featuring homometallic pillared-trilayer structure, [Co(3)(ina)(2)(pico)(2)(H(2)O)(2)](n) (1), was built from mixed pyridyl-type monocarboxylates, isonicotinate (ina) and 3-hydroxypicolinate (pico), containing Kagome-type [Co(3)(pico)(2)(H(2)O)(2)](n)(2n+) trilayers. The magnetic phase diagram of 1 shows a metamagnetic transition below 3.2 K, arising from the competing interactions between the antiferromagnetic intralayer couplings in different amplitudes with obviously noncompensated moments versus weak AF interlayer coupling.

[1,2-Bis(1H-benzimidazol-2-yl-κN 3)ethane]dichloridozinc(II)

The title compound, [ZnCl2(C16H14N4)], crystallizes with two molecules in the asymmetric unit. The ZnII atoms show distorted tetrahedral coordination environments. Adjacent molecules are linked by N—H⋯Cl hydrogen bonds, forming a three-dimensional network.

catena-Poly[[[dichloridozinc(II)]-μ-1,4-bis­(1H-benzimidazol-2-yl-κN3)butane] 1,4-bis­(1H-benzimidazol-2-yl)butane solvate]

In the crystal structure of the title coordination polymer/co-crystal, {[ZnCl2(C18H18N4)]·C18H18N4}n, the tetrahedrally coordinated ZnII ions are linked by the N-heterocycle into a linear chain. Another N-heterocycle present is not coordinated to the metal atom but interacts with the chain through N—H⋯N and N—H⋯Cl hydrogen bonds. The butyl chain of the uncoordinated ligand is disordered over three positions in a 0.511 (4):0.289 (5):0.200 (5) ratio.