Conformational behavior, redox and spectroscopic properties of gold dithiolene complexes: [Au(iPr-thiazYdt)2]−1 (Y = O, S, Se)
摘要:
Three monanionic gold dithiolene complexes with different exocyclic chalcogen atoms (O, S, Se) on the N-isopropyl-1,3-thiazoline-2-chalcogenone-4,5-dithiolate ligand, have been synthetized with the aim of modulating their properties. Due to the presence of the isopropyl (iPr) group in the plane of the thiazoline-2-chalcogenone ring, different syn and anti rotamers can exist, in solution and in the solid state. Characterization of these complexes by spectroscopic and electrochemical methods was carried out in order to investigate the influence of the size, electronegativity and polarizability of the exocyclic chalcogen atom. The molecular structure of the three anionic complexes [Au(iPr-thiazYdt)(2)](-1), with Y = O, S, Se, were established by single crystal X-ray diffraction studies. Theoretical calculations carried out at the DFT levels were realized on the three possible rotamers, syn/syn, syn/anti and anti/anti of the trans-[Au(iPrthiazYdt)(2)](-1) complexes. (C) 2017 Elsevier B.V. All rights reserved.
Broad Spectrum Functional Activity of Structurally Related Monoanionic Au(III) Bis(Dithiolene) Complexes
作者:Yann Le Gal、Agathe Filatre-Furcate、Dominique Lorcy、Olivier Jeannin、Thierry Roisnel、Vincent Dorcet、Diana Fontinha、Denise Francisco、Miguel Prudncio、Marta Martins、Catarina Soeiro、Sílvia A. Sousa、Jorge H. Leitão、Tnia S. Morais、Ins Bártolo、Nuno Taveira、Joana F. Guerreiro、Fernanda Marques
DOI:10.3390/ijms23137146
日期:——
The biological properties of sixteen structurally related monoanionic gold (III) bis(dithiolene/diselenolene) complexes were evaluated. The complexes differ in the nature of the heteroatom connected to the gold atom (AuS for dithiolene, AuSe for diselenolene), the substituent on the nitrogen atom of the thiazoline ring (Me, Et, Pr, iPr and Bu), the nature of the exocyclic atom or group of atoms (O
评估了 16 种结构相关的单阴离子金 (III) 双(二硫烯/二硒烯) 配合物的生物学特性。这些配合物的不同之处在于与金原子相连的杂原子(AuS 代表二硫烯,AuSe 代表二硒烯)、噻唑啉环氮原子上的取代基(Me、Et、Pr、iPr 和 Bu)、环外原子或原子团(O、S、Se、C(CN) 2)和反离子(Ph 4 P +或 Et 4 N +)。研究了所有复合物的抗癌和抗菌活性,而仅评估了选定复合物的抗 HIV 活性。大多数复合物分别对顺铂敏感和顺铂耐药的卵巢癌细胞 A2780 和 OVCAR8 显示出相关的抗癌活性。孵育 48 小时后,IC 50值范围为 0.1–8 µM (A2780) 和 0.8–29 µM (OVCAR8)。与 Ph 4 P + ([ P ]) 抗衡离子的配合物通常比 Et 4 N + ([ N ]) 类似物更活跃,IC 50值在相同数量级甚至低于金诺芬。斑马鱼胚胎模型
Conformational behavior, redox and spectroscopic properties of gold dithiolene complexes: [Au(iPr-thiazYdt)2]−1 (Y = O, S, Se)
Three monanionic gold dithiolene complexes with different exocyclic chalcogen atoms (O, S, Se) on the N-isopropyl-1,3-thiazoline-2-chalcogenone-4,5-dithiolate ligand, have been synthetized with the aim of modulating their properties. Due to the presence of the isopropyl (iPr) group in the plane of the thiazoline-2-chalcogenone ring, different syn and anti rotamers can exist, in solution and in the solid state. Characterization of these complexes by spectroscopic and electrochemical methods was carried out in order to investigate the influence of the size, electronegativity and polarizability of the exocyclic chalcogen atom. The molecular structure of the three anionic complexes [Au(iPr-thiazYdt)(2)](-1), with Y = O, S, Se, were established by single crystal X-ray diffraction studies. Theoretical calculations carried out at the DFT levels were realized on the three possible rotamers, syn/syn, syn/anti and anti/anti of the trans-[Au(iPrthiazYdt)(2)](-1) complexes. (C) 2017 Elsevier B.V. All rights reserved.
Single-Component Conductors: A Sturdy Electronic Structure Generated by Bulky Substituents
state structures and charge mobility of organic semiconductors, this crystal engineering strategy is usually avoided in molecular metals where a maximized overlap is sought. In order to investigate such steric effects in singlecomponentconductors, the ethyl group of the known [Au(Et-thiazdt)2] radical complex has been replaced by an isopropyl one to give a novel singlecomponentmolecular conductor