Chem 102 1st Edition Lecture 19Outline of Last Lecture I. ChelatesA. Coordination SphereB. Coordination GeometryII. Naming Complexes Outline of Current LectureI. IsomersII. Optical ActivityIII. Rules for EnantiomersCurrent LectureI. Isomers- Compounds of the same formula but different arrangement of atoms. Isomers have different physical and chemical elements. Structural isomers have different bonds while Stereoisomers have the same bond but a different spatial arrangement. -Coordination Sphere Isomerism- different ligands in and out of the coordination sphere. -Linkage Isomerism- Different donor atoms attached to the metal from the same ligand. -Stereoisomers- Same bonds, different atom arrangement. Geometric Isomerism- atoms joined the same way but occupy different positions in space. Optical Isomerism-Mirror images that are non-superimposed on each other. Chiral- the hand, the non-superimposable molecule. Enantiomers- the left and right hand, the 2 compounds thatare non-superimposable. II. Optical Activity- Optical isomers (enantiomers) can rotate polarized light in different directions. 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.-Dextrorotatory (D)- Rotates light to the right. Levorotatory (L)- Rotates light to the left.-Racemic- Solutions containing equal amounts of each isomer. III. Rules for Enantiomers-Octahedral- Optically active, 3 same bidentate, 2 same bidentate in cis position, 6 different monodentate. -Tetrahedral- Optically active, 4 different monodentate ligands. -Square Planar- Not chiral, have no enantiomers, complexes don’t exhibit optical
View Full Document
Unlocking...