Synthesis, characterisation and antimicrobial studies of organotin(IV) complexes with 1,10-phenanthroline derivatives
摘要:
The synthesis of several diorganotin(IV) dicarboxylate compounds, including acetates and nicotinates as well as diorganotin(IV) dichloride complexes of the ligands phen, dione and dppz were undertaken. Several difficulties in either the syntheses or complexation reactions with the organic ligands were encountered. The diorganotin(IV) dichloride complexes of the ligands (R2SnCl2 center dot L where R = Me, n-Bu or Ph and L = phen, dione or dppz) were tested against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. The dibutyltin(IV) derivatives exhibited the broadest range of activity in comparison to the dimethyltin(IV) or diphenyltin(IV) derivatives. The addition of the nicotinate group did not promote activity against any of the bacteria. Furthermore, only in the case of Ph2SnCl2 center dot dione was there improved activity compared to the organic ligand itself. (C) 2013 Elsevier B.V. All rights reserved.
用摩尔比为1:1和2:1(配体:金属)的二有机锡(IV)氧化物制备了十六种烟酸和烟酸N-氧化物的配合物。二有机锡烟酸酯的分子式为(i)R 2 Sn(Nic)2 [2:1]和(ii)[R 2 SnNic] 2 O [1:1],而二有机锡烟酸酯N-氧化物的分子式为(iii)R 2 Sn (NicO)2 [2:1]和(iv)[R 2 SnNicO] 2 O [1:1](R = CH 3,n C 4 H 9,n C 8 H 17,C 6 H 5CH 2 ; Nic =烟酸的阴离子,NicO =烟酸的N-氧化物的阴离子。所有的丁基和辛基衍生物都是单体的,并且更易溶,而二甲基和二苄基锡的衍生物是聚合物,在普通溶剂中的溶解性或不溶性较小。Mössbauer,1 N NMR和IR光谱研究已用于指定结构。所有2:1配合物均具有扭曲的反八面体,所有烟碱酸的1:1配合物均具有五个配位扭曲的反三角双锥体结构。但是