title: Infrared and laser Raman studies of [Ni(II)(dppe)Cl2] and [Co(III)(dppe)2Cl2]PF6 (dppe = 1,2-bis(diphenylphosphino)ethane).
abstract: Infrared and laser Raman spectral investigations of [Ni(II)(dppe)Cl2] and [Co(III)(dppe)2Cl2]PF6 have been made to determine the conformation and nature of bonding in Ni(II) and Co(III) dppe complexes. The stereochemistry of the two forms of these complexes has been confirmed. The role of steric interferences in cis-Planar [Ni(II)(dppe)Cl2] complex is interpreted in terms of reduction in symmetry upon coordination. The strong trans influence of the chelating dppe ligand is observed in the [Co(III)(dppe)2Cl2]PF6 complex. Both complexes exhibit the effect of crystalline field on molecular vibrations. The Fermi resonance overtone is also observed in these complexes.
authors.affiliation: Microprocessor and Computer Department, School of Physics, Madurai Kamaraj University, India. miltonfranklin@yahoo.com
authors.forename: A Milton Franklin
authors.initials: AM
authors.lastname: Benial
authors.forename: V
authors.initials: V
authors.lastname: Ramakrishnan
authors.forename: R
authors.initials: R
authors.lastname: Murugesan
mesh_terms: D003035:Cobalt / Q000737:chemistry; D007834:Lasers; D009532:Nickel / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014732:Vibration
chemical_list: D009942:Organometallic Compounds; D009943:Organophosphorus Compounds; D003035:Cobalt; D009532:Nickel