Propose a structural formula for the cation at m/z 41 observed in the massspectrum of methylcyclopentane.
Ligands o Monodentate Only coordinates to the metal at one spot on molecule o Bidentate & Polydentate Can coordinate to the metal at multiple spots Typically larger molecules i.e. Ethylenediamine (en) below Formation Constants o Complex with larger formation constant forms more favorably o K fiffer because of Gibbs Free Energy Chelate Effect (kee-late) Larger K fave larger change in entropy Chelating Agents o Remove or separate metal ions from a solution o i.e. EDTA removes poisonous trace metals in food Energy in Coordinate Chemistry o Ligand’s electrons are attracted to metal cation Increases energy of the d-orbitals o Crystal Field Splitting Difference in energy among d-orbitals based on ligand geometry Used to explain many observations about coordinate chemistry, such as color and magnetism Octohedral Geometry Ligands are along x, y, z axes Raises energy of d z2and d x -yorbitals the most Raises energy of other d orbitals less Tetrahedral Geometry Ligands come between axes 2 2 2 Raises energy of d z and d x -y orbitals less Raises energy of other d orbitals th