Synthesis, Crystal Structures and Spectrothermal Characterization of a Heptacoordinated Dimeric Salicylato Cadmium(H) Complex with 2,2 '-Azobispyridine (abpy), (mu-abpy)[Cd(HsaI)(2)(abpy)](2)

Arslan F., Olmez H., ODABAŞOĞLU M., Buyukgungor O.

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, vol.636, no.8, pp.1641-1644, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 636 Issue: 8
  • Publication Date: 2010
  • Doi Number: 10.1002/zaac.200900333
  • Journal Name: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1641-1644
  • Keywords: Cadmium, Azobispyridines, Thermal analysis, Chelates, N ligands, 2,2-AZOBIS(PYRIDINE) ABPY, DECOMPOSITION, SPECTROSCOPY, MONONUCLEAR, ADDUCTS, LIGANDS, CU(II), EPR
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

mu-2,2'-Azobispyridinebis[2,2'-azobispyridinesalicylato(O)-salicylato(O,O') cadmium(II), (mu-abpY)[Cd(HsaI)(2)(abpy)](2) (I) was synthesized and characterized by IR and UV/Vis spectroscopy, thermal analysis, and X-ray diffraction techniques. Two abpy ligands and two salicylato ligands coordinate to the Cd2+ ion in a monocapped trigonal-prismatic arrangement. The capping atom is the N3 atom. One of the two abpy ligands behaves as a "s-frame" bridging ligand and adopts a s-cis/E/s-cis conformation, whereas the other one adopts as a s-cis/E/s-trans conformation. One of the two salicylato ligands acts as a monodentate ligand, which coordinates with the carboxylate oxygen atom, whereas the other one adopts bidentate coordination through two carboxylate oxygen atoms. The hydroxy groups of salicylato ligands, which coordinate in a monodentate fashion, are disordered over two positions, with occupancies of 0.52 for group A and 0.48 for group B. The decomposition reaction takes place in the temperature range 20-1000 degrees C under nitrogen. Thermal decomposition of the title complex proceeds in two stages.