CHEM 1120 Edition 1nd Lecture 23 Outline of Last Lecture I Complexes a Ligands b Coordination Complexes c Chelate ligands d Kinetic Lability e Nomenclature Outline of Current Lecture I Isomerism a Structural isomers i Coordination sphere ii Linkage b Stereoisomers i Geometric ii Optical Current Lecture I Isomerism a Isomers same formula different properties and arrangements of atoms i Structural isomers different bonds 1 Coordination sphere isomers different ligands occupy the coordination sphere but overall formula is the same a Ex Cr H2O 6 Cl3 and Cr H2O 5Cl Cl2 H2O b Complex with empirical formula CrCl3O6H12 exists as different complexes c Different from what s inside and outside brackets 2 Linkage isomers a Ligand is bound to the metal by a different atom These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute ii Stereoisomers same bonds different arrangements 1 Geometric isomers a Cis close together trans across from each other square planar and octahedral complexes tetrahedrals cannot have this b Facial all across from each other meridional 2 are trans 2 Optical isomers a Take mirror image and lay it on top of original not the same 3 Stereoisomers enantiomers a D dextrorotatory right handed b L Levorotatory left handed c
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