Unusual monodentate binding of a C-NONOate ligand in the nitrosyl complex (OEP)Ru(NO)(η1-ONN(t-Bu)O)
摘要:
The recent discovery of the C-NONOate moiety ([X{N2O2}](-); diazeniumdiolate) as a new class of siderophore functional group necessitates further examination of its coordination chemistry. The bidentate eta(2)-O,O binding mode of the C-NONOate moiety is well-established. We have synthesized and characterized, by X-ray crystallography, the first monodentate eta(1)-O binding mode of a C-NONOate group to any metal, namely that of (OEP)Ru(NO)(eta(1)-ONN(t-Bu)O). The compound exhibits an irreversible first oxidation in CH2Cl2 at a Pt electrode. Protonation with triflic acid results in the formation of N2O, presumably from the direct protonation of the C-NONOate ligand.
Lee, Jonghyuk; Yi, Geun-Bae; Khan, Masood A., Inorganic Chemistry, 1999, vol. 38, # 20, p. 4578 - 4584
作者:Lee, Jonghyuk、Yi, Geun-Bae、Khan, Masood A.、Richter-Addo, George B.
DOI:——
日期:——
Synthesis, characterization, and redox behavior of six-coordinate (por)Ru(NO)Cl compounds (por=porphyrinato dianion)
作者:Nan Xu、Jonghyuk Lee、Douglas R. Powell、George B. Richter-Addo
DOI:10.1016/j.ica.2004.06.031
日期:2005.6
A new high-yield preparative route to (por)Ru(NO)Cl compounds (por=porphyrinato dianion) from reactions of (por)Ru(NO)(alkoxide) precursors with boron trichloride is reported. These ruthenium nitrosyl chloride complexes are known to be useful precursors to (por)Ru(NO)-containing derivatives. The crystal structure of (OEP)Ru(NO)Cl (OEP = octaethylporphyrinato dianion) shows that the Ru-N-O linkage is linear. The redox behavior of the (por)Ru(NO)Cl compounds has been determined by cyclic voltammetry. Analysis of the data reveals that the first oxidation of the (por)Ru(NO)Cl compounds is porphyrin-ring centered. (c) 2004 Elsevier B.V. All rights reserved.