Crystal structure and spectroscopic properties of oxalato(1,4,8,11- tetraazacyclotetradecane)chromium(III) perchlorate

Jong Ha Choi, In Gyung Oh, Takayoshi Suzuki, Sumio Kaizaki

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The crystal structure of [Cr(ox)cyclam]ClO4 has been determined by X-ray crystallography. The macrocyclic cyclam is folded along the N(4) and N(11) direction with the four N atoms coordinated to the Cr atom and the two O atoms occupying the two remaining positions. The complex cation unit has its central Cr atom in a distorted octahedral coordination with two Cr-O and four Cr-N bonds at average distances 1.959 and 2.077Å, respectively. The zero-phonon line in the sharp-line absorption spectrum splits into two components by 81 cm-1. The UV-visible and IR spectra have also been measured. The spectral properties of the title complex reflect the bidentate coordination of oxalate and the cis-V configuration of the cyclam ligand.

Original languageEnglish
Pages (from-to)39-44
Number of pages6
JournalJournal of Molecular Structure
Volume694
Issue number1-3
DOIs
Publication statusPublished - Jun 2004
Externally publishedYes

Fingerprint

Chromium
perchlorates
chromium
Crystal structure
Atoms
crystal structure
Phonons
atoms
Oxalates
X Ray Crystallography
Cations
X ray crystallography
oxalates
visible spectrum
Ligands
crystallography
line spectra
Absorption spectra
absorption spectra
cations

Keywords

  • Crystal structure
  • Cyclam
  • Oxalato chromium(III) complex
  • Spectral properties

ASJC Scopus subject areas

  • Structural Biology
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Crystal structure and spectroscopic properties of oxalato(1,4,8,11- tetraazacyclotetradecane)chromium(III) perchlorate. / Choi, Jong Ha; Oh, In Gyung; Suzuki, Takayoshi; Kaizaki, Sumio.

In: Journal of Molecular Structure, Vol. 694, No. 1-3, 06.2004, p. 39-44.

Research output: Contribution to journalArticle

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AB - The crystal structure of [Cr(ox)cyclam]ClO4 has been determined by X-ray crystallography. The macrocyclic cyclam is folded along the N(4) and N(11) direction with the four N atoms coordinated to the Cr atom and the two O atoms occupying the two remaining positions. The complex cation unit has its central Cr atom in a distorted octahedral coordination with two Cr-O and four Cr-N bonds at average distances 1.959 and 2.077Å, respectively. The zero-phonon line in the sharp-line absorption spectrum splits into two components by 81 cm-1. The UV-visible and IR spectra have also been measured. The spectral properties of the title complex reflect the bidentate coordination of oxalate and the cis-V configuration of the cyclam ligand.

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