1430639-87-4Relevant academic research and scientific papers
Silver(I), palladium(II) and mercury(II) NHC complexes based on bis-benzimidazole salts with mesitylene linker: Synthesis, structural studies and catalytic activity
Liu, Qing-Xiang,Zhao, Li-Xuan,Zhao, Xiao-Jun,Zhao, Zhi-Xiang,Wang, Zhi-Qiang,Chen, Ai-Hui,Wang, Xiu-Guang
, p. 35 - 48 (2013)
The diimidazolium salts bis[1-R-imidazoliumylmethyl]mesitylene·2X (1: R = PhCH2, X = Br- and 2: R = Et, X = PF 6-) and the dibenzimidazolium salts bis[1-R- benzimidazoliumylmethyl]mesitylene·2X (3: R = nPr, X = I -; 4: R = PhCH2, X = I-), as well as their four NHC silver(I), palladium(II) and mercury(II) complexes, {[mesitylene(CH 2imyPhCH2)2]2Ag2· Ag2Br4}n (6), {mesitylene[(CH 2imyPhCH2)PdCl2(CH3CN)] 2} (7), {mesitylene[(CH2imyEt)2Hg 2(CHCN)][HgI4]} (8) and {[mesitylene(CH 2bimynPr)2HgI][HgI4]0.5} (9), as well as one anionic complex {[1,3-bis(1-benzylbenzimidazolemethyl) mesitylene][HgI4]} (5) (imy = imidazol-2-ylidene and bimy = benzimidazol-2-ylidene), have been prepared and characterized. In the complex 6, the macrometallocycles formed by two precursor 1 and two silver(I) atoms are connected together via Ag2Br4 unit to form a 1D polymeric chain. Complex 7 adopted an open structure formed by one precursor 1 and two Pd(II) atoms. In complex 8, a bidentate dicarbene from precursor 2 and a doubly deprotonated acetonitrile coordinate with two Hg(II) atoms to afford a funnel-like structure. The 10-membered macrometallocycle of 9 was formed by one precursor 3 and one Hg(II) atom. In the crystal packings of these compounds, 1D supramolecular chains, 2D supramolecular layers or 3D architectures are formed via intermolecular weak interactions, including π-π interactions, hydrogen bonds, C-H···π contacts and weak Hg·· ·N and Hg···I bonds. Additionally, the catalytic activity of the NHC palladium(II) complex 7 in Suzuki-Miyaura cross-coupling reaction was studied.
