53702-61-7Relevant academic research and scientific papers
Base hydrolysis of coordinated organonitriles. Reactions of rutheniuni(III) and rhodium (III) complexes
Zanella, Andrew W.,Ford, Peter C.
, p. 42 - 47 (2008/10/08)
Specific rates of base hydrolysis of the pentaammineruthenium(IIl) complexes of acetonitrile (2.2 × 102 M-1 sec-1) and of benzonitrile (2.0 × 103 M-1 sec-1), Ru(NH3)5(NCR)3+ (R = CH3 or C6H5), are shown to be approximately 108 times faster than the free ligand under the same conditions and about 102 times faster than the analogous cobalt(III) complexes. Reaction products are the corresponding amido complexes which reversibly protonate in acidic solution to give the amide complexes. Base hydrolysis of the pentaamminerhodium(III) complex of acetonitrile (1.0 M-1 sec-1) occurs at a rate comparable to that of the cobalt(III) complex, while the ruthenium(II) complex is at least 106 times less reactive than the corresponding ruthenium(III) complex. In bicarbonate-carbonate buffer solutions the reactions of the Ru(III) complexes display general base catalysis, a result which suggests that in aqueous solution the coordinated nitriles are subject to attack by nucleophiles other than hydroxide ion.
