Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9769905 | Journal of Molecular Structure | 2005 | 8 Pages |
Abstract
In an effort to utilize [Co(NH3)6]3+ cation as a new host for mono-, di- and tri-substituted nitrophenolate anions, yellow solids of composition [Co(NH3)6](4-np)3.4H2O, [Co(NH3)6](2,4-dnp)3, and [Co(NH3)6](2,4,6-tnp)3 were obtained in high yields by reacting sodium salts of 4-np, 2,4-dnp and 2,4,6-tnp (where np=nitrophenolate, dnp=dinitrophenolate and tnp=trinitrophenolate,) with [Co(NH3)6]Cl3 respectively in 3:1 molar ratio in hot aqueous medium. These cobalt(III) complex salts have been characterized by elemental analyses and spectroscopic techniques (UV/Visible, IR and NMR). Single crystal X-ray structure determination of [Co(NH3)6](4-np)3.4H2O revealed the presence of discrete ions, [Co(NH3)6]3+ and C6H4NO3â in addition to four lattice water molecules in the solid state. A strong network of hydrogen bond interactions (N-Hâ¯O (phenolate), N-Hâ¯O (nitro), O-Hâ¯O (water) stabilize the crystal lattice. The formation of these salts and measurement of solubility products suggests that [Co(NH3)6]3+ present in [Co(NH3)6]Cl3 may be used as anion receptor for the nitrophenolate ions.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Raj Pal Sharma, Ritu Bala, Rajni Sharma, Paloth Venugopalan,