3,3,6,7-Tetramethyl-1-N-(1-phenyl-2,3-dimethyl-5-oxo-3-pyrazolin-4-yl)imino-1,2,3,4-tetrahydroisoquinolinium trichlorocobaltate: Synthesis, crystal structure, and spectra

The product of the reaction between cobalt(II) chloride and 3,3,6,7-tetrame thyl-1-N-(1-phenyl-2,3-dimethyl-5-oxo-3 -pyrazolin-4-yl)imino-1,2,3,4-tetra hydroisoquinoline (L-1) was synthesized and characterized by X-ray diffract ion and IR and electronic absorption spectroscopy. In the compound [(HL1)Co Cl3], the protonated monodentate ligand (HL1)(+) is coordinated to the coba lt atom through the oxygen atom. In the cobalt coordination tetrahedron, th e Co-Cl bond lengths are 2.227, 2.276, and 2.286 Angstrom; the Co-O bond le ngth is 1.998 Angstrom.