Syntheses, Spectral, Thermal and Structural Characterization of 2-Phenyl and Its Novel Nickel(II) Complex

Abstract

The 2-phenyl-2-(1-hydroxyiminoethyl)-1,2,3,4-tetrahydroquinazoline (HL) and its NiII complex have been prepared and characterized by spectral method (FT-IR, NMR (13C and 1H), UV-vis.), elemental analysis, magnetic susceptibility and thermal analysis (TG, DTA) techniques. The crystal structures of HL and NiII complex were also determined by the single crystal X-ray diffraction. The HL and NiII complex crystallizes in the monoclinic and triclinic, space groups P2<inf>1</inf>/c and P1̄, respectively. The complex was occurred by the elimination of 1 mole of 2-aminobenzylamine from the 2 moles of the HL after the ring opening reaction by the NiII attack. Crystallographic study reveal that Ni II atom has a square planer geometry being coordinated by four nitrogen atoms of HL. Two thermal processes of the HL and NiII complex can occur in TG and DTA curves. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.