I Introduction.- 1 Preamble.- 2 Symmetry.- 3 Isomerism.- 4 Designation of the Absolute Configuration.- 5 Abbreviation of the Ligands.- II X-Ray Diffraction.- 1 Introduction.- 2 Space Lattice.- 3 Symmetry of Crystal Lattices: Space Groups.- 4 Diffraction of X-Rays, Bragg's Equation.- 5 The Geometrical Structure Factor.- 6 Electron-Density.- 7 Thermal Vibration.- 8 Experimental Procedure.- 9 Process of Crystal Structure Determination.- 10 Neutron Diffraction.- 11 An Example: X-Ray and Neutron Diffraction of (-)589-tris (R-propylenediamine)cobalt(III) Bromide.- 12 Anomalous Scattering.- 13 The Forced, Damped Oscillations of an Electron.- 14 Direct Consequences of Anomalous Scattering.- 15 Complete Expressions for Friedel's Rule and its Breakdown by Anomalous Scattering.- 16 The Use of Internal Reference Centre.- 17 Neutron Anomalous Scattering.- Appendix II-1.- III Conformational Analysis.- 1 Introduction.- 2 Conformational Energy of a Complex.- A. Bond Stretching Potential.- B. Potential Energy for Bond Angle Distortion.- C. Torsional Potential.- D. Non-Bonded Interactions.- E. Electrostatic Interactions.- 3 Computational Methods for Conformational Analysis.- 4 Geometrical Molecular Models.- 5 Conclusion.- IV Structure and Isomerism of Optically Active Complexes.- 1 Bidentates.- A. Four-Membered Chelate Rings.- B. Five-Membered Chelate Rings.- C. Six-Membered Chelate Rings.- D. Seven-Membered Chelate Rings.- 2 Terdentates.- 3 Quadridentates.- 4 Quinquedentates.- 5 Sexidentates.- V Electron-Density Distribution in Transition Metal Complexes.- 1 Introduction.- 2 Earlier Work.- 3 Charge-Density Distribution in Transition-Metal Complexes: Preamble.- 4 Charge-Density Distribution in Transition-Metal Complexes.- A. [Co(NH3)6][Co(CN)6].- B. [Co(NH3)6] [Cr(CN)6].- C. Asphericity of d-Electron Distribution in [Co(NH3)6][Co(CN)6]and[Co(NH3)6][Cr(CN)6]..- D. K2Na[Co(NO2)6].- E. Charge Distribution in Spinels.- F. Charge Density Distribution in D3 Complexes.- 5 Conclusions.- VI Circular Dichroism.- 1 General Introduction.- 2 Interaction of Light with a Medium Containing Optically Inactive Molecules.- 3 Interaction of Light with a Medium Containing Optically Active Molecules.- 4 Quantum Theories.- 5 Experimental Device; Dichrometer.- 6 Optical Activity of Transition-Metal Complexes.- 7 Circular Dichroism Spectra of tris-Bidentate Complexes.- A. Solution Circular Dichroism.- B. Tests for the Theoretical Models.- C. Solid State Circular Dichroism of tris-Diamine Cobalt(III) Complexes.- D. Calculation of Rotatory Strengths of tris-Bidentate Cobalt(III) Complexes.- 8 Circular Dichroism Spectra of cis-bis-Bidentate Complexes.- 9 Sector Rules and the Circular Dichroism Spectra of Multi dentate Complexes.- A. Sector Rules.- B. Circular Dichroism of Multidentate Complexes.- 10 Conclusion.- Appendix VI-1.- References.