CHEM10004 Lecture Notes - Lecture 34: Crystal Field Theory, Feti, Molecular Electronic Transition
16 Oct 2018
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Chemistry 2 - lecture 34 - week 12. Colour and transition metal chemistry: transition metals doped into hard, transparent minerals, amethyst, fe in quartz sio2, sapphire, fe/ti in al2o3, ruby ca, 3% cr3+ in al2o3, emerald ca, 2% cr3_ in be3al2si6o18. Electromagnetic spectrum: substances absorb light in visible region of spectrum, the colours is determined by wavelengths that remain. Crystal field theory and colour: [ti(h2o)6]3+ : 3d1, absorbs light in the yellow-green visible region, red and blue appears violet, transfer of e between split d orbitals, energy ( e) of d orbital splitting corresponds to visible region. Spectrochemical series: ordering of ligands in terms of their ability to split the energies of the metal d orbitals. : order applies generally and doesn"t depend on metal or its oxidation state, or. Electron configuration in octahedral complexes: electrons placed in t(2g) orbitals rst are more stable than average, octahedral m + Monday, 15 october 2018: octahedral, fe2+ (d6), n-donor ligands.
