136595-77-2Relevant academic research and scientific papers
Synthesis and characterisation of copper(II), nickel(II) and cobalt(II) complexes of 3-(2-hydroxyphenyl)-5-(4-X-phenyl)pyrazolines
Natarajan, C.,Tharmaraj, P.
, p. 722 - 723 (2007/10/02)
Complexes of 3-(2-hydroxyphenyl)-5-(4-X-phenyl)pyrazolines (X = H, Me, MeO) with copper(II), nickel(II) and cobalt(II) have been synthesised and characterised.The IR spectra indicate coordination through phenolic oxygen and azomethine nitrogen of pyrazoline ring.The copper(II), nickel(II) and cobalt(II) complexes have magnetic moments and ligand field bands characteristic of low-spin square-planar configuration.The strong field nature of the ligand, in contrast to the weak field nature of 3-(1-hydroxy-2-naphthyl)-5-(4-X-phenyl)pyrazolines, has been ascribed to d?-p? back bonding.
