Premium
Ruthenium Nitrosyl Complexes of Bis(3,5‐dimethylpyrazol‐1‐yl)methane Oxyanions
Author(s) -
Ortiz Mayreli,
Díaz Alicia,
Cao Roberto,
Suardíaz Reynier,
Otero Antonio,
Antiñolo Antonio,
FernándezBaeza Juan
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400065
Subject(s) - chemistry , ruthenium , molar ratio , medicinal chemistry , methane , derivative (finance) , inorganic chemistry , stereochemistry , catalysis , organic chemistry , financial economics , economics
New ruthenium( II ) mononitrosyl complexes of general composition [Ru(NO)LCl 2 ], [Ru(NO)L(en)]Cl 2 and [Ru(NO)L 2 ]Cl have been obtained upon treating Ru(NO)Cl 3 with potential κ 3 ‐ N , N ,O ligands bis(3,5‐dimethylpyrazol‐1‐yl)methanesulfonate (bdmpzsa) and bis(3,5‐dimethylpyrazol‐1‐yl)acetate (bdmpza) in 1:1 and 1:2 molar ratios. These mononitrosyl complexes have a sharp, intense νNO band in the IR spectra within 1874−1851 cm −1 , indicating a linear Ru−NO + coordination. For both [Ru(NO)L 2 ]Cl compounds, a dynamic switch on‐off process occurs between the oxyanionic moieties on the apical position trans to NO + and the pyrazolic ligands on the equatorial plane. A dynamic 1 H NMR experiment of this process gave Δ G # = 46−48 kJ·mol −1 at 218−228 K for the acetate derivative. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)