Polymeric Copper(Ⅱ) Complexes with 4-Formyl-3-Methyl-1-Phenylpyrazol-5-one Hetarylhydrazones: Synthesis and Crystal Structures

摘要

4-Formyl-3-methyl-1-phenylpyrazol-5-one quinolin-2-yl- (H2L~1) and benzothiazol-2-ylhydra-zones (H2L~2) were synthesized and studied. Quantum-chemical modeling of possible tautomers of the hydra-zones was performed. Copper(Ⅱ) complexes of the general formula [Cu(HL)(ROH)]Y (R = CH3, C2H5; Y= NO3, ClO4) were obtained and examined by IR and EPR spectroscopy, magnetochemistry, and X-ray diffraction. Additional coordination through the N atom of the pyrazole ring enables the complex molecules to form zigzag polymer chains linked by intermolecular hydrogen bonds.