Synthesis, crystal structures, and luminescence of organic-lanthanide complexes with nicotinate and isonicotinate ligands

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Guohua Jia
  • Ga-Lai Law
  • Ka-Leung Wong
  • Peter A. Tanner
  • Wing-Tak Wong

Detail(s)

Original languageEnglish
Pages (from-to)9431-9438
Journal / PublicationInorganic Chemistry
Volume47
Issue number20
Publication statusPublished - 20 Oct 2008

Abstract

Six lanthanide coordination compounds with two isomeric carboxylic acids, nicotinic acid (HL1) and isonicotinic acid (HL2), [(L 1)3Ln(H2O)2]2 (Ln = Eu, 1; Gd, 2; Tb, 3) and [(L2)2Ln(H2O) 4][NO3] (Ln = Eu, 4; Gd, 5; Tb, 6), have been synthesized and structurally characterized by single-crystal X-ray diffraction. Complexes 1-3 are dimeric whereas 4-6 are polymeric, all with 8-coordination of Ln 3+. The distinction between these lanthanide complexes is readily accomplished from the 10 K high resolution electronic emission spectra. Spectral interpretation is given for the Eu3+ complexes 1, 4, whereas the spectra of 3 and 6 are more complex. The relationships between spectroscopic and crystallographic site symmetries are discussed. The calculated second rank crystal field strengths of Eu3+ in 1 and 4 are intermediate in magnitude. © 2008 American Chemical Society.

Citation Format(s)

Synthesis, crystal structures, and luminescence of organic-lanthanide complexes with nicotinate and isonicotinate ligands. / Jia, Guohua; Law, Ga-Lai; Wong, Ka-Leung; Tanner, Peter A.; Wong, Wing-Tak.

In: Inorganic Chemistry, Vol. 47, No. 20, 20.10.2008, p. 9431-9438.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review