29892-37-3Relevant articles and documents
Novel gold(I)- and gold(III)-N-heterocyclic carbene complexes: Synthesis and evaluation of their anticancer properties
Rana, Bidyut Kumar,Nandy, Abhishek,Bertolasi, Valerio,Bielawski, Christopher W.,Das Saha, Krishna,Dinda, Joydev
, p. 2544 - 2548 (2014)
A novel Au(III)-N-heterocyclic carbene organometallic complex supported by two N-heterocyclic carbene (NHC) ligands was synthesized from Au(SMe 2)Cl and 1-methyl-2-pyridin-2-yl-2H-imidazo[1,5-a]pyridin-4-ylium hexafluorophosphate via a Ag intermediate. X-ray crystallography revealed the first example of a square planar geometry adopted by a Au(III) species stabilized by two NHCs and two chloride ligands. The aforementioned Au(I)- and Au(III)-NHC complexes were found to be more potent than cisplatin against the HCT 116, HepG2, A549, and MCF7 cell lines.
Synthesis, Characterization, and in vitro Cytotoxicity of Gold(I) Complexes of 2-(Diphenylphosphanyl)ethylamine and Dithiocarbamates
Sulaiman, Adam A. A.,Altaf, Muhammad,Isab, Anvarhusein A.,Alawad, Abdullah,Altuwaijri, Saleh,Ahmad, Saeed
, p. 1454 - 1459 (2016)
Gold(I) complexes of 2-(diphenylphosphanyl)ethylamine or (2-aminoethyl)diphenylphosphine (AEP), and dithiocaarbamates (R2NCS2) were prepared by the reaction of these ligands with (CH3)2S-AuCl in dichloromethane.
Electropolymerization of Metal Clusters Establishing a Versatile Platform for Enhanced Catalysis Performance
Cai, Jinmeng,Gong, Chun-Hua,Han, Zhen,Li, Si,Li, Yao,Mak, Thomas C. W.,Wang, Qian-You,Wang, Shan,Wang, Yi-Man,Zang, Shuang-Quan
supporting information, (2022/01/20)
Atomically precise metal clusters are attractive as highly efficient catalysts, but suffer from continuous efficiency deactivation in the catalytic process. Here, we report the development of an efficient strategy that enhances catalytic performance by electropolymerization (EP) of metal clusters into hybrid materials. Based on carbazole ligand protection, three polymerized metal-cluster hybrid materials, namely Poly-Cu14cba, Poly-Cu6Au6cbz and Poly-Cu6Ag4cbz, were prepared. Compared with isolated metal clusters, metal clusters immobilizing on a biscarbazole network after EP significantly improved their electron-transfer ability and long-term recyclability, resulting in higher catalytic performance. As a proof-of-concept, Poly-Cu14cba was evaluated as an electrocatalyst for reducing nitrate (NO3?) to ammonia (NH3), which exhibited ≈4-fold NH3 yield rate and ≈2-fold Faraday efficiency enhancement compared to that of Cu14cba with good durability. Similarly, Poly-Cu6Au6cbz showed 10 times higher photocatalytic efficiency towards chemical warfare simulants degradation than the cluster counterpart.
Mechanism of Photoredox-Initiated C-C and C-N Bond Formation by Arylation of IPrAu(I)-CF3 and IPrAu(I)-Succinimide
Kim, Suhong,Toste, F. Dean
supporting information, p. 4308 - 4315 (2019/01/25)
Herein, we report on the photoredox-initiated gold-mediated C(sp2)-CF3 and C(sp2)-N coupling reactions. By adopting gold as a platform for probing metallaphotoredox catalysis, we demonstrate that cationic gold(III) complexes are the key intermediates of the C-C and C-N coupling reactions. The high-valent gold(III) intermediates are accessed by virtue of photoredox catalysis through a radical chain process. In addition, the bond-forming step of the coupling reactions is the reductive elimination from cationic gold(III) intermediates, which is supported by isolation and crystallographic characterization of key Au(III) intermediates.
