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Journal of Chemical Sciences
Volume 135, 2023
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Y B R D Rajesh
Articles written in Journal of Chemical Sciences
Volume 116 Issue 3 May 2004 pp 169-174
Subramania Ranganathan Ch Chandrashekhar Rao Suvarchala Devi Vudayagiri Y B R D Rajesh B Jagadeesh
In an effort to design agents that could solubilize silica in water, under ambient conditions and pH, as takes place in nature, novel zwitterionic, penta-oxo-coordinated silicon compounds with siliconate cores have been prepared from 4-substituted pyridine N-oxides (H, OMe, morpholino, NO2) as donor ligands, their structures established by1H,13C and MS, and the coordination number of silicon, by29Si NMR. The formation of complexes from pyridine N-oxides is noteworthy since they arise from interaction with a weakly nucleophilic oxygen centre. The ability of the pyridine N-oxides to enhance the solubilization of silica in water has been experimentally demonstrated. Possible rationalization of this observation on the basis of O → Si coordination via the oxygen atom of pyridine N-oxide is suggested
Volume 135, 2023
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