Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Preparation and Characterization of Dimeric Molybdenum(Ⅴ) Complexes with Bis(hydroxyethyl)dithiocarbamate

Bis(Hydroxyethyl)dithiocarbamate 의 이핵 몰리브덴 (Ⅴ) 착물 합성과 그 성질

  • Yeh Gyung-Hak (Department of Chemistry Education, Hyosung Women's University) ;
  • Koo Bon-Kweon (Department of Chemistry Education, Hyosung Women's University)
  • 예경학 (효성여자대학교 사범대학 화학교육과) ;
  • 구본권 (효성여자대학교 사범대학 화학교육과)
  • Published : 19900900
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Abstract

A series of oxo-and sulfido-bridged molybdenum (V) complexes, Mo$_2$O$_4$L$_2$, Mo$_2$O$_3$L$_4$, Mo$_2$O$_2$S$_2$L$_2$, and Mo$_2$OS$_3$L$_2$ [L = bis(hydroxyethyl)dithiocarbamate] have been prepared. The complexes with bridging and terminal oxo groups have been synthesized by the reactions of (PyH)$_2$MoOCl$_5$ or MoCl$_5$ and ligand in water. One of the rest two complexes, in which bridging and terminal oxo groups have been replaced by sulfido in Mo$_2$O$_4^{2+}$ core, Mo$_2$O$_2$S$_2$L$_2$ have been prepared by addition of triphenylphosphine to a chloroform solution of Mo$_2$OS$_3$L$_2$. While, Mo$_2$OS$_3$L$_2$ is obtained from aqueous solution of (NH$_4$)$_2$MoS$_4$ and ligand in the presence of sodium dithionite. The complexes are identified by elemental analysis, and spectral data of IR, UV-vis, nmr, and mass. Also, the electrochemical behaviour for the complexes in dimethylsulfoxide has been investigated by the cyclic voltammograms.

일련의 산소 및 황 가교결합의 이핵 몰리브덴(V) 착물, Mo$_2$O$_4$L$_2$, Mo$_2$O$_3$L$_4$, Mo$_2$O$_2$S$_2$L$_2$, 그리고 Mo$_2$OS$_3$L$_2$, L = bis(hydroxyethyl)dithiocarbamate을 합성하였다. 말단과 가교의 산소결합 착물은 수용액에서 (PyH)$_2$MoOCl$_5$ 혹은 MoCl$_5$와 리간드의 반응으로부터 합성되었고, Mo$_2$O$_4^{2+}$핵에서 산소가 황으로 치환된 착물, Mo$_2$O$_2$S$_2$L$_2$은 Mo$_2$OS$_3$L$_2$의 클로로포름 용액에 트리페닐포스핀을 가하므로 합성되었다. 한편, Mo$_2$OS$_3$L$_2$착물은 sodium dithionite 존재하에서 (NH$_4$)$_2$MoS$_4$와 리간드의 수용액으로부터 얻어졌다. 합성한 착물에 대한 원소분석과 ir, uv-vis, nmr, 그리고 mass 스펙트라에 의한 착물의 분광학적 성질을 조사하였다. 또한 디메틸술폭시드 용액에서 이들 착물의 전기화학적 성질을 순환전압-전류법으로 조사하였다.

Keywords

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