35Cl NQR Study of Cation Polarizability in Metal Salts of Monochloro Acetic Acid
D. Ramananda a, L. Ramu b, R. Chandramani c, K.P. Ramesh b and J. Uchil d
a Department of Materials Science, Mangalore University, Karnataka 574199, India
b Department of Physics, Bangalore University, Bangalore 560 006, India
c Department of Physics, Bangalore University, Bangalore 560 006, India
d Department of PG studies in Physics, SBMJ College, Bangalore, India
Full Text PDF
Received: 2 11 2007; in final form: 3 03 2008;
Various metal salts (Na, K, Rb, and NH_4) of monochloro acetic acid were prepared and the 35Cl nuclear quadrupole resonance frequencies were measured at room temperature. A comparative study of nuclear quadrupole resonance frequencies of monochloro acetic acid and its metal salts is carried out. The frequency shifts obtained in the respective metal chloroacetates are used to estimate the changes in the ionicity of C-Cl bond. Further, the changes in the ionicity of C-Cl bond were used to estimate the percentage of intra-molecular charge transfer between respective cation-anion of the metal salts of chloro acetic acid. The nuclear quadrupole resonance frequency is found to decrease with increasing ionicity of the alkali metal ion.
PACS numbers: 76.60.Gv