Syntheses, structures and bioactivities of silver(I) complexes with dithioether ligands that contain a di- or triethylene glycol chain and different terminal groups
作者:Yan An、Xiaofeng Li、Huiguo Chen、Weisheng Liu、Seikweng Ng、Yuliang Zhang、Junhua Wang
DOI:10.1016/j.ica.2011.06.026
日期:2011.10
A series of flexible dithioethyl ligands that contain ethyleneoxy segments were designed and synthesized, including bis(2-(pyridin-2-ylthio)ethyl) ether (L-1), 1,2-bis(2-(pyridin-2-ylthio) ethoxy) ethane (L-2), bis (2-(benzothiazol-2-ylthio) ethyl) ether (L-3) and 1,2-bis(2-(benzothiazol-2-ylthio) ethoxy) ethane (L-4). Reactions of these ligands with AgNO3 led to the formation of four new supramolecular coordination complexes, [Ag2L1(NO3)(2)](2) (1), [Ag2L2(NO3)(2)] (2), [AgL3(NO3)](infinity) (3) and [AgL4(NO3)] (4) in which the length of the (CH2CH2O)(n) spacers and the terminal groups of ligands cause subtle geometrical differences. Studies of the inhibitory effect to the growth of Phaeodactylum tricornutum show that all four complexes are active and the compound 4 has the highest inhibitory activity. (C) 2011 Elsevier B. V. All rights reserved.
Synthesis and crystal structures of some bis-benzimidazoles, -benzothiazoles and -benzoxazoles by an alternative route: their complexation with copper(II) salts
作者:Craig J. Matthews、William Clegg、Mark R. J. Elsegood、Troy A. Leese、Derek Thorp、Peter Thornton、Joyce C. Lockhart
DOI:10.1039/dt9960001531
日期:——
A novel and convenient synthetic route towards new bis-benzimidazoles, -benzothiazoles and -benzoxazoles from readily available starting materials has been established. These compounds have thioethers at the 2 position of the heterocycle and the resultant carbon–thioether linkage is stable under the conditions of synthesis. The crystal structures of bis(benzoxazol-2-ylsulfanyl)methane, bis(benzoth