文摘
Reaction of 2-[3-(2-pyridyl)pyrazol-1-ylmethyl](1-methylimidazole) (L3) with ZnCl2 affords [(L3)ZnIICl2] 1. Crystal structure analysis of 1 reveals that the ZnII ion assumes a slightly distorted square-pyramidal geometry with coordination by the tridentate nonplanar ligand L3, providing a pyridine, a pyrazole and an imidazole N donors and two chloride ions. Notably, secondary interactions [C–H?Cl (–CH2-hydrogen of the spacer and –CH3 hydrogen of 1-methylimidazole)] triggered by ZnII-coordinated chloride ions acting as hydrogen-bonding acceptors generates self-complementary dimeric tectons, which lead to 1D supramolecular chain.