Issue Description


Authors : R.B.Lanjewar and M.R.Lanjewar

Page Nos : 140-147

Description :
The structural diagnosis and lattice dynamic of complexes (Me3Sn)3[Fe(CN)5L]n xH2O where L= 2-, 3- and 4- cyanopyridine, isonicotinamide and Nicotinic acid undertaken by means of 119Sn Mössbauer spectroscopic techniques. The Mössbauer parameters of the complexes indicate that all the tin atoms are coordinated with three alkyl group and two cyano groups having trigonal bipyramidal structure. The asymmetry of the quadrupole splitting peak intensity observed in the 119Sn Mossbauer spectra for the complexes was attributed to anisotropic mean square vibrational amplitude with respect to a molecular symmetry axis. Solid-solid phase transitions were clearly found in all the complexes at room temperature. The values of isomer shift (IS) and quadrupole splitting (QS) and the temperature dependence QS indicate that the tin atom in these complexes is in +4 oxidation state.

Date of Online: 30 Sep 2013