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Syntheses and Characterization of Cr(III)-Hydrogensalicylato and -Hydroxonitrophenolato Tetraaza Macrocyclic Complexes
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  • Syntheses and Characterization of Cr(III)-Hydrogensalicylato and -Hydroxonitrophenolato Tetraaza Macrocyclic Complexes
  • Syntheses and Characterization of Cr(III)-Hydrogensalicylato and -Hydroxonitrophenolato Tetraaza Macrocyclic Complexes
저자명
Byun. Jong-Chul,Yoon. Chang-Hoon,Mun. Dae-Hun,Kim. Ki-Ju,Park. Yu-Chul
간행물명
Bulletin of the Korean Chemical Society
권/호정보
2006년|27권 5호|pp.687-693 (7 pages)
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대한화학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Chromium(III) complexes, cis-[Cr([14]-decane)$(HOC _6H _4COO) _2$]$ClO _4$ I and cis-[Cr([14]-decane)(OH) $(OC _6H _4NO _2)$]$ClO _4{cdot}H _2O$ II ([14]-decane = rac-5,5,7,12,12,14-hexamethyl-1,4,8,11-teraazacyclotetradecane) are synthesized and structurally characterized by a combination of elemental analysis, conductivity, IR and VIS spectroscopy, and X-ray crystallography. The complexes crystallizes in the monoclinic space groups, $C2 _1$/a in I and $P2 _1$/n in II. Analysis of the crystal structure of complex I reveals that central chromium(III) ion has a distorted octahedral coordination environment and two hydrogensalicylato ligands are unidentate to the chromium(III) ion via the carboxyl groups in the cis-position. For monomeric complex I the hydrogensalicylato coordination geometry is as follows: Cr-O(average) = 1.984(3) $AA$;Cr-N range = 2.105(3)-2.141(4) $AA$;C(24)-O(4) = 1.286(5) $AA$;N(2)-Cr-N(4) (equatorial position) = 96.97(15)${^{circ}}$; N(1)-Cr-N(3) (axial position) = 168.27(15)${^{circ}}$; O(1)-Cr-O(4) = 85.70(13)${^{circ}}$. The crystal structure of II has indicated that chromium(III) ion is six-coordinated by four secondary amines of the macrocycle, hydroxide anion and nitrophenolate anion.