Crystal structures and IR, NMR and UV spectra of 3-formyl- and 3-acetylpyridine N (4)-methylthiosemicarbazones
作者:H. Beraldo、R. Lima、L.R. Teixeira、A.A. Moura、D.X. West
DOI:10.1016/s0022-2860(00)00550-0
日期:2000.10
3-Formyl- and 3-acetylpyridine N(4)-methylthiosemicarbazone, H3Fo4M and H3Ac4M, respectively, have been prepared, their. structures solved and IR, NMR :md UV spectra recorded. Intramolecular and intermolecular hydrogen bonding are both present, but the mode of the intermolecular interaction is different in the two compounds. Further, there is a significant difference in their angles between the mean planes of the pyridine ring and thiosemicarbazone moiety. The H-1 NMR spectral studies show significant differences between the two. (C) 2000 Elsevier Science B.V. All rights reserved.
Synthesis, Antioxidant, and Antibacterial Studies of Zn(II), Cd(II), and Hg(II) Complexes with 3-Formylpyridinethiosemicar bazone and Its N4-Methyl Analogue
作者:S. P. Mydhili、B. Sireesha、Ch. Venkata Ramana Reddy
DOI:10.1134/s1070363219050232
日期:2019.5
with n > 2, except that of Hg(II)-H3FP4MT, which is ML2. The antioxidant activity of the ligands and their Zn(II) and Hg(II) complexes demonstrate higher activity than their corresponding ligands Cd(II) complexes. Antibacterial activity of the ligands and the complexes is tested against gram positive: Staphylococcus aureus, Bacillus subtilis and gram negative: Escherichia coli and Klebsiella pneumonia
由生物学上重要的配体和金属离子在溶液中形成的络合物的稳定性常数的评估可以帮助理解金属络合物在螯合疗法中的应用。因此,在70中进行了配体(L),3-甲酰基吡啶硫代半碳酰胺(H3FPT)和3-甲酰基吡啶-N 4-甲基硫代半碳酰胺(H3FP4MT)与Zn(II)和Cd(II)金属离子(M)的络合平衡研究%v / v DMF-水介质,0.1M KNO 3离子强度和稳定性常数是在303 K下pH值测定的。二元络合物以1:1(M:L)的比例形成并且相当稳定。通过各种分析和光谱技术(包括元素分析,摩尔电导,LC-MS,TGA,IR),合成并表征了H3FPT和H3FP4MT(L)与Zn(II),Cd(II)和Hg(II)离子的二元配合物和1 H NMR光谱。根据积累的信息,该络合物为n> 2的聚合(ML)n,但Hg(II)-H3FP4MT的络合物为ML 2。配体及其Zn(II)和Hg(II)配合物的抗氧化