title: Electronic and vibrational spectroscopy of cis-beta-[CrCl(2)(1,4,7,11-tetrazaundecane)chromium(III) perchlorate.
abstract: The sharp-line absorption spectrum of cis-beta-[CrCl(2)(2,2,3-tet)]ClO(4) (2,2,3-tet: 1,4,7,11-tetraazaundecane) has been measured between 13,000 and 16,000 cm(-1) at 5K. The 77K emission, 298 K infrared and visible spectra have also been measured. The zero-phonon band in the highly resolved absorption spectrum splits into four components. The vibrational intervals of the electronic ground state were determined from the far-infrared and emission spectra. The 10 electronic bands due to spin-allowed and spin-forbidden transitions were assigned. Using the observed transitions, a ligand field analysis has been performed to probe the ligand field properties of coordinated atoms in the title chromium(III) complex. The X-ray crystal structure at low-temperature was determined to help in assigning the sharp-line electronic transitions.
authors: Department of Chemistry, Andong National University, Andong 760-749, South Korea. jhchoi@andong.ac.kr
authors: Jong-Ha
authors: JH
authors: Choi
authors: Sik Young
authors: SY
authors: Choi
authors: Yong Pyo
authors: YP
authors: Hong
authors: Seong-Oon
authors: SO
authors: Ko
authors: Keon Sang
authors: KS
authors: Ryoo
authors: Sang Hak
authors: SH
authors: Lee
authors: Yu Chul
authors: YC
authors: Park
mesh_terms: D018360:Crystallography, X-Ray; D004583:Electrons; D008024:Ligands; D009942:Organometallic Compounds / Q000737:chemistry*; D010472:Perchlorates / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman; D013816:Thermodynamics; D014732:Vibration
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D010472:Perchlorates; C531919:dichloro(1,4,7,11-tetrazaundecane)chromium(III); C494474:perchlorate