Unusual Quadrupole Splitting in D i- and Trialkylamine Substituted Pentacyanoferrate(II) Complexes

Abstract

A series of pentacyanoferrate complexes, Na3[Fe(CN)5L] ·nH2O, where L = (CH3)2NH, (C2H5)2NH, (C2H5)3N, (C3H7)2NH, (C4H9)2NH, (C4H9)3N and (C6H5)2NH were studied by Mössbauer and infrared spectroscopy. All the complexes exhibited two line spectra with ⊿ EQ = 0.73-1.92 mms-1 and δ = −0.04−0.49 mms-1 (w.r.t. SNP) and can be divided into two groups with well defined parameters. Partial isomer shift and partial quadrupole splitting values were correlated with bonding characteristics.