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• W1973100847 startingPage "594" @default.
• W1973100847 abstract "4[N-(furfural)amino]antipyrine semicarbazone(FFAAPS)와 질산 란탄(III)이 형성하는 배위화합물의 입체화학에 미치는 <TEX>${alpha}$</TEX>-, <TEX>${beta}$</TEX>- 및 <TEX>${gamma}$</TEX>-picolines의 영향을 연구하였다. 이들 배위화합물의 일반적 조성은 [Ln(FFAAPS)<TEX>$(NO_3)_3$</TEX>Pic] (Ln=La, Pr, Nd, Sm, Gd, Tb, Dy 또는 Ho 및 Pic=<TEX>${alpha}$</TEX>-, <TEX>${beta}$</TEX>- or <TEX>${gamma}$</TEX>-picolines)이다. 모든 배위화합물은 원소분석, 분자량, 몰전기전도도, 자기수자율, 적외선 및 자외선 스펙트럼으로 특성을 조사하였다. 적외선 연구결과 FFAAPS는 N, N, O 주개를 갖는 중성 삼배위 리간드로 행동하는 반면, <TEX>${alpha}$</TEX>-, <TEX>${beta}$</TEX>- 또는 <TEX>${gamma}$</TEX>-picoline는 헤테로 N-원자를 통하여 란탄(III) 이온에 배위된다. 질산 음이온은 이들 화합물에서 이배위로 결합한다. 자외선 스펙트럼 결과로부터 전자구름 퍼짐 효과(<TEX>${beta}$</TEX>), covalence factor(<TEX>$b^{1/2}$</TEX>), Sinha parameter (<TEX>${delta}%$</TEX>) 및 covalence angular overlap parameter(<TEX>${eta}$</TEX>)를 계산하였다. 이들 착물의 열적성질을 열무게 분석법에 의해 연구하였다. 본 화합물에 있어서 란탄(III)의 배위수는 10으로 조사되었다. 기본 리간드인 FFAAPS와 착물의 항박테리아 선별조사 결과, 이들 착물은 중간 정도의 항박테리아 활성을 보였다. The effect of <TEX>${alpha}$</TEX>-, <TEX>${beta}$</TEX>- and <TEX>${gamma}$</TEX>-picolines on the stereochemistry of the coordination compounds of lanthanide(III) nitrates derived from 4[N-(furfural)amino]antipyrine semicarbazone (FFAAPS) has been studied. The general composition of the present coordination compounds is [Ln(FFAAPS)<TEX>$(NO_3)_3$</TEX>Pic] (Ln=La, Pr, Nd, Sm, Gd, Tb, Dy or Ho and Pic=<TEX>${alpha}$</TEX>-, <TEX>${beta}$</TEX>- or <TEX>${gamma}$</TEX>-picolines). All these coordination compounds have been characterized by elemental analyses, molecular weight, molar conductance, magnetic susceptibility, infrared and electronic spectra. The infrared studies suggest that the FFAAPS behaves as a neutral tridentate ligand with N, N, O donor while <TEX>${alpha}$</TEX>-, <TEX>${beta}$</TEX>- or <TEX>${gamma}$</TEX>-picoline is coordinated to the lanthanide(III) ions via heterocyclic N-atom. Nitrates are bicovalently bonded in these compounds. From the electronic spectral data, nephelauxetic effect (<TEX>${beta}$</TEX>), covalence factor (<TEX>$b^{1/2}$</TEX>), Sinha parameter (<TEX>${delta}%$</TEX>) and the covalence angular overlap parameter (<TEX>${eta}$</TEX>) have been calculated. Thermal stabilities of these complexes have been studied by thermogravimetric analysis. The coordination number of lanthanide(III) ions in the present compound is found to be ten. The antibacterial studies screening of the primary ligand FFAAPS and the complexes showed that the present complexes have moderate antibacterial activities." @default.
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• W1973100847 date "2011-08-20" @default.
• W1973100847 modified "2023-09-26" @default.
• W1973100847 title "Studies on the Effect of Picolines on the Stereochemistry of Lanthanide(III) Nitrate Coordination Compounds of 4[N-Furfural)amino]antipyrine Semicarbazone and Antibacterial Activities" @default.
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• W1973100847 doi "https://doi.org/10.5012/jkcs.2011.55.4.594" @default.
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