Transition Metal Coordination Chemistry a subset of the lecture notesSlide Number 2Slide Number 3Slide Number 4Slide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Slide Number 13Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18Slide Number 19Slide Number 20Slide Number 21Slide Number 22Slide Number 23Slide Number 24Slide Number 25Slide Number 26Transition Metal Coordination Chemistry a subset of the lecture notes Chemistry 362 : Spring 2015 Chapter 7 Shriver and AdkinsClassification of Ligands: III A description of properties  Strong Field/Weak Field Ligands  Chelating Ligands and Denticity  Polydentate: bi-, tri-, tetra, penta-  Hexadentate, etc.  Bridging Ligands  4-electron bridge; 3 center, 4 electrons  2-electron bridge; 3-center, 2 electrons  Ambidentate Ligands  Bulky Ligands  Chiral Ligands  Hemi-labile Ligands  Non-innocent Ligands  Spectator LigandsWhat geometries are prominent? Octahedral Trigonal Bipyramidal Square planar Tetrahedral Trigonal planar LinearNow, How about those colors and the magnetism? Where are the electrons? Show me the electrons!! Color: Electronic transitions due to energy levels whose gaps are in the visible range of the electromagnetic spectrum. Magnetism: partially filled orbitals, unpaired electrons. high spin: maximum no. of d electrons unpaired low spin: electrons paired up in d orbitals. WHY?? Bonding models: Valence bond (coordinate covalent bond needs empty orbitals on metal) Molecular Orbital Theory (all orbitals defined) Crystal Field Theory (originally from ionic crystals; influence of ligand lone pair repulsion on d-orbitals)To explain magnetism and colors, need electronic configuration of the Transition Metal Complex prime example NH3prime example F-prime example COAn Alternate Way of Determining the Metal’s Orbital Contribution to the Frontier Molecular Orbitals: Crystal Field or Ligand Field TheoryChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC DavisChem Wiki UC