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Sadasivan, Neelakantan (1965) Study of co-ordination compounds by spectroscopic methods. Doctoral thesis, Sir John Cass College.
A wide range of metal co-ordination complexes containing halogens and monodentate ligand molecules of Groups V and VI has been prepared and their infrared spectra examined over the frequency range 4000-120 cm⁻¹. The metals studied included: Co(II), Ni(II), Cu(I) and Cu(II), Zn(II), Pd(II), Ag(I), Cd(II), Pt(II), Au(I) and Au(III), as well as Hg(II).
Most of the compounds were of the general formula MX₂L₂ where M = metal, X = Cl, Br and I, and L = NH₃, N(CH₃)₃, P(CH₃)₃, As(CH₃)₃, S(CH₃)₂ and Se(CH₃)₂. Assignments of observed infrared bands to fundamental modes have been proposed and calculations made, where possible, of the metal-ligand force constants. A brief discussion of these results as related to the metal-ligand bond is included.
The remainder of this thesis comprises a study of the complexes of 1:4-diselenan with a range of metal-halides and also the examination of the far-infrared spectra of some charge-transfer complexes. In both cases conclusions regarding structure and bond strengths have been reached from the infrared evidence.
Details of the preparations involved, the computations carried out and the construction of the far-infrared spectrometer are also included.
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