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Electronic and Vibrational Spectroscopy of cis-Diisothiocyanato(1,4,8,11-tetraazacyclotetradecane)chromium(Ⅲ) Thiocyanate
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  • Electronic and Vibrational Spectroscopy of cis-Diisothiocyanato(1,4,8,11-tetraazacyclotetradecane)chromium(Ⅲ) Thiocyanate
  • Electronic and Vibrational Spectroscopy of cis-Diisothiocyanato(1,4,8,11-tetraazacyclotetradecane)chromium(Ⅲ) Thiocyanate
저자명
Choi. Jong-Ha,Park. Yu-Chul
간행물명
Bulletin of the Korean Chemical Society
권/호정보
2003년|24권 3호|pp.384-388 (5 pages)
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대한화학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The emission and excitation spectra of $cis-[Cr(cyclam)(NCS)_2]NCS$ (cyclam = 1,4,8,11-tetraazacyclotetradecane) taken at 77 K are reported. The infrared and visible spectra at room temperature are also measured. The vibrational intervals due to the electronic ground state are extracted from the far-infrared and emission spectra. The ten pure electronic origins due to spin-allowed and spin-forbidden transitions are assigned by analyzing the absorption and excitation spectra. Using the observed transitions, a ligand field analysis has been performed to determine the bonding properties of the coordinated ligands in the title chromium(Ⅲ) complex. According to the results, it is found that nitrogen atoms of the cyclam ligand have a strong σ-donor character, while the NCS ligand has medium σ- and π-donor properties toward chromium(Ⅲ) ion.