Abstract
Hexa-coordinate neutral adducts (C 6F 5) 3SbCl 2·L( I) [L=DMSO, DBSO, Ph 3AsO, Ph 3PO, DPF, DMF, Py, 3-Pic, TU] and penta-coordinate cationic complexes [(C 6F 5) 3Sb(Ph 3AsO) 2][ClO 4] 2 ( II) and [(C 6F 5) 3Sb(bipy)][ClO 4] 2 ( III) have been synthesised. Molecular adducts are monomeric in benzene and non-electrolyte in acetonitrile. IR spectra and conductance measurement suggest the absence of coordination of ClO 4 group to Sb atom in cationic complexes. Spectroscopic data conform to the requirement of octahedral configuration for neural complexes ( I) and a trigonal bipyramidal structure for complex cations ( II) and ( III).
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