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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 46, Number 2
JKCSEZ 46(2)
April 20, 2002 

Spectral, Magnetic, and Thermal Properties of Some Thiazolylazo Complexes

Thiazolylazo 화합물의 분광학적, 자기적, 그리고 열적성질
M. S. Masoud , G. B. Mohamed , Y. H. Abdul-Razek , A. E. Ali , F. N. Khairy

M. S. Masoud , G. B. Mohamed , Y. H. Abdul-Razek , A. E. Ali , F. N. Khairy
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.

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.

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