Can I read Dimeric and polymeric square-pyramidal copper(II) complexes containing equatorial–apical chloride or acetate bridges on EtoBox?

Dimeric and polymeric square-pyramidal copper(II) complexes containing equatorial–apical chloride or acetate bridges by Nimma Rajaiah Sangeetha; Samudranil Pal is a Chemistry article available to read on EtoBox.

What is Dimeric and polymeric square-pyramidal copper(II) complexes containing equatorial–apical chloride or acetate bridges about?

Syntheses, crystal structures and physical properties of four new copper(II) complexes of deprotonated aroylhydrazones of 2-pyridine-carboxaldehyde are reported. Two of the complexes contain chloride as a coligand and the other two contain acetate as a coligand. In each complex, the planar tridentate monoanionic ligand binds the metal ion via the pyridine-N, the imine-N and the amide-O atoms. The fourth site is satisfied by the chloride or the acetate-O to form a square-plane. In the solid state, both complexes containing the acetate as the coligand exist as centrosymmetric dimeric species with the metal ion in a distorted square-pyramidal coordination sphere and the acetate group acting as a monoatomic equatorial -apical bridge. One of the complexes containing chloride is a similar centrosymmetric dichloro-bridged dinuclear species. However, the other one exists as a polymeric chain species via equatorial-apical chloride bridges. The electronic spectra of the complexes in methanol solutions display a ligand-field band in the visible region (687-713 nm). The complexes are redox active and, in each case, two reduction responses are observed in the potential range -0.06 to -0.29 and

Who reads Dimeric and polymeric square-pyramidal copper(II) complexes containing equatorial–apical chloride or acetate bridges?

Author

Nimma Rajaiah Sangeetha; Samudranil Pal

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0277-5387)

Published

2000

Language

EN

Field

Chemistry (Physical Sciences)