대한화학회지 (Journal of the Korean Chemical Society)

  • 제46권2호
  • /
  • Pages.99-116
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  • 2002
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  • 1017-2548(pISSN)
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  • 2234-8530(eISSN)
대한화학회 (Korean Chemical Society)
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Thiazolylazo 화합물의 분광학적, 자기적, 그리고 열적성질

Spectral, Magnetic, and Thermal Properties of Some Thiazolylazo Complexes

  • Masoud, M.S. (Chemistry Department) ;
  • Mohamed, G.B. (Physics and Chemistry Department) ;
  • Abdul-Razek Y.H. (Physics and Chemistry Department) ;
  • Ali A.E. (Physics and Chemistry Department) ;
  • Khairy F.N. (Chemistry Department)
  • 발행 : 2002.04.20
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초록

Thiazolylazo 화합물과 barbituric산, uracil, thiouracil, citrazinic산 chromotrotropic산, gallict산, pyrogallol 그리고 salicylic산의 Co(II), Ni(II) 그리고 Cu(II) 착화합물의 제조하였고, $^1H$ NMR, IR, 그리고 전기 흡수 스펙트럼에 대한 pHdudgid에 의하여 규명하였다. 이온화형태, 전기적 전이 그리고 해리상수에 대하여 설명하였다. 구리 착화합물은 등방형 ESR스펙트럼이었으며 자기적으로 궤도 기여를 갖는 묽은 성질이었다. 상세한 DTA데이타를 얻었고, 그 결과를 토론하였다.

The thiazolylazo compounds and their Co(II), Ni(II) and Cu(II) complexes of barbituric acid, uracil, thiouracil, citrazinic acid, chromotropic acid, gallic acid, pyrogallol and salicylic acid were pre-pared and characterized by $^1H$ NMR , IR and the effect of pH on the electronic absorption spectra . The mode of ionization, the electronic transitions and the dissociation constants were discussed. The stoichiometries of the complexes were of 1:1, 2:1 and 3:2 (M:L). The copper complexes are of isotropic ESR spectra (except that of gallic acid which showed a complicated one) and are of magnetically diluted behaviour with orbital con-tribution. Detailed DTA data were obtained and discussed.

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