195974-58-4Relevant academic research and scientific papers
Synthesis and X-band EPR spectra of binary and ternary complexes of copper(II) with salicylideneanthranilic acid and imidazoles
Patel, Ram N.,Pandeya, Krishna B.
, p. 1149 - 1157 (1997)
The synthesis and EPR spectra of some binary and ternary complexes of copper(II) with a terdentate ligand, salicylideneanthranilic acid (H2SAA) and some monodentate imidazoles viz. imidazole (im) and 2-ethylimidazole (e-im), are described. The binary complex with copper(II) and salicylideneanthranilic acid shows a subnormal magnetic moment and EPR spectra for spin-spin interaction. The zero-field splitting parameter D has been evaluated as 190 G and the copper-copper distance as 5.227 A. The ternary complexes show magnetic moments and EPR spectra which suggest a distorted tetrahedral geometry around copper(II).
SALICYLIDENEAMINOCARBOXYLATE COMPLEXES OF COPPER(II) AND NICKEL(II). DIFFERENT FORMS OF SALICYLIDENEGLYCINATO AND SALICYLIDENEANTHRANILATOCOPPER(II) AND NICKEL(II)
Das, R. C.,Mishra, M. K.,Mohanty, S. K.
, p. 377 - 384 (2007/10/02)
Different forms of copper(II) and nickel(II) salicylideneglycinate (Sg(2-)) and salicylideneanthranilate (Sa(2-)) complexes have been isolated and characterized.The copper(II) complex of salicylideneglycine, CuSg . 1.5H2O, has a bluish green, monomeric planar, and a green, dimeric distorted planar modification.Formation through metal ion catalysis has been suggested for the latter.The salicylideneanthranilatocopper(II), CuSa, is dimeric and distorted planar with carboxylate bridges.Nickel(II) forms two comlpexes with salicylideneglycine, one, NiSg . 2H2O, having a 1:1 metal to ligand ratio, octahedral geometry and dimeric form, and the other Ni(HSg)2 . 2H2O, having a 1:2 metal to ligand ratio and monomeric form.The salicylideneanthranilatonickel(II), NiSa . 2H2O, is similar to the former compound of nickel(II).A statistical correlation between the structures of copper(II) complexes and their ligand field band positions has been found.
