Ruthenium complexes incorporating azoimine and 伪-diamine based ligands: Synthesis, crystal structure, electrochemistry and DFT calculation

详细信息	查看全文 | 推荐本文 |

• 作者：Mousa Al-Noaimi^a ; ^{manoaimi@hu.edu.jo} ; Murad A. AlDamen^b
• 关键词：Ruthenium ; Complexes ; Azomethine ; X-ray structure ; Electrochemistry ; DFT calculation
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 期刊代码：40_00201693
• 类别：ch
• 出版时间：30 May, 2012
• 卷：387
• 期：Complete
• 页码：45-51
• 文件大小：555 K

摘要

Ru(II) complexes, trans-[RuCl₂(Azo)L] [where Azo = C₆H₅NNC(C₆H₅)NC₆H₅, L = 2,2鈥?bipyridine (bpy) (C1), 4,4鈥?dimethyl-2,2鈥?bipyridine (dmb) (C2), 1,10-phenanthroline (phen) (C3), 5-amino-1,10-phenanthroline (NH₂phen) (C4)] were synthesized and characterized by spectroscopy (IR, UV-Vis, and NMR), cyclic voltammetry and crystallography. The new Azo ligand was isolated as amidrazones, H₂Azo {where H₂Azo is C₆H₅NHNC(C₆H₅)NHC₆H₅}, but oxidized to azoimines (Azo) during the formation of the Ru(II) complexes. A crystallographic analysis of C1 showed that the Ru-center is in a distorted octahedral coordination sphere in which the donor atoms around the Ru(II) center occupy cis:cis:trans N,N(Azo):N,N(bpy):Cl,Cl positions. The Ru(II) oxidation state is greatly stabilized by the novel Azo bidentate ligand showing Ru(III/II) oxidation couples ranging from 1.10 to 1.15 V. The absorption spectrum of C1 in acetonitrile was modeled by time-dependent density functional theory.