Synthesis, crystal structures and magnetic studies of terephthalato-bridged binuclear nickel(II) complexes

Chang Seop Hong, Young Sin You

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Two binuclear compounds [Ni2(pmdtn)2(tp)(H 2O)2](ClO4)2(H2O) 4 (1) and [Ni2(pmdtn)2(tp)(N3) 2](H2O)4 (2) have been prepared by using the multibinding terephthalate (=tp) dianion and the tridentate capping ligand N,N,N,N,N″-pentamethyldiethyltriamine (=pmdtn) and have been characterized by X-ray crystallography and magnetic measurements. The crystal structures of both complexes show distorted octahedral geometries around the Ni(II) centers linked by the tp bridges in a bisbidentate fashion. The dihedral angles between the benzene rings and carboxylate groups correspond to 14.2° for 1 and 21.5° for 2. The intradimer distance of Ni⋯Ni through the tp ligand for 1 and 2 are 10.731 and 10.800 Å, respectively. The magnetic data reveal weak antiferromagnetic interactions transmitted by the tp bridge with J=-0.18 cm-1 (1) and -0.02 cm -1 (2), which is explained by the structural parameters.

Original languageEnglish
Pages (from-to)1379-1384
Number of pages6
JournalPolyhedron
Volume23
Issue number8
DOIs
Publication statusPublished - 2004 May 6

Keywords

  • Binuclear complexes
  • Crystal structures
  • Magnetic properties
  • Nickel(II) compounds
  • Terephthalate ligand

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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