Silver(I), palladium(II) and mercury(II) NHC complexes based on bis-benzimidazole salts with mesitylene linker: Synthesis, structural studies and catalytic activity
Liu, QX; Zhao, LiX; Zhao, XJun; Zhao, ZhiX; Wang, ZhiQ; Chen, AiHui; Wang, XiuG
| HERO ID | 2904989 |
|---|---|
| In Press | No |
| Year | 2013 |
| Title | Silver(I), palladium(II) and mercury(II) NHC complexes based on bis-benzimidazole salts with mesitylene linker: Synthesis, structural studies and catalytic activity |
| Authors | Liu, QX; Zhao, LiX; Zhao, XJun; Zhao, ZhiX; Wang, ZhiQ; Chen, AiHui; Wang, XiuG |
| Journal | Journal of Organometallic Chemistry |
| Volume | 731 |
| Page Numbers | 35-48 |
| Abstract | The diimidazolium salts bis[1-R-imidazoliumylmethyl]mesitylene center dot 2X (1: R = PhCH2, X = Br- and 2: R = Et, X = PF6-) and the dibenzimidazolium salts bis[1-R-benzimidazoliumylmethyl]mesitylene center dot 2X (3: R = Pr-n, X = I-; 4: R = PhCH2, X = I-), as well as their four NHC silver(I), palladium(II) and mercury(II) complexes, {[mesitylene(CH(2)imyPhCH(2))(2)](2)Ag-2 center dot Ag2Br4}(n) (6), {mesitylene[(CH(2)imyPhCH(2))PdCl2(CH3CN)](2)} (7), {mesitylene[(CH(2)imyEt)(2)Hg-2(CHCN)][HgI4]} (8) and {[mesitylene(CH(2)bimy(n)Pr)(2)HgI][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(l) atoms are connected together via Ag2Br4 unit to form a ID 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 pi-pi It interactions, hydrogen bonds, C-H center dot center dot center dot pi contacts and weak Hg center dot center dot center dot N and Hg center dot center dot center dot I bonds. Additionally, the catalytic activity of the NHC palladium(II) complex 7 in Suzuki-Miyaura cross-coupling reaction was studied. (C) 2013 Elsevier B.V. All rights reserved. |
| Doi | 10.1016/j.jorganchem.2013.01.026 |
| Wosid | WOS:000318319300006 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Carbene; Silver; Mercury; Palladium; Catalysis |