Friday, November 8, 2013

Coordination Chemisrty

construction & Isomerism in Coordination Complexes Isomers: compounds with the same molecular formula whole incompatible Structural Isomers that disaccord in which atoms ar bonded to the adulterate Structural isomers: [Cr( body of water)5Cl]Cl2 water pee water supply H2O Cr H2O Cl Cl Cl H2O H2O arrangements of atoms. Stereoisomers Same atoms atomic number 18 bonded to the Metal, just now in divergent spatial arrangements vs [Cr(H2O)6]Cl3 H2O Cr H2O H2O H2O Cl3 Green Linkage isomers : (structural isomers) [Co(NH3)5NO2]Cl2 vs Violet [Co(NH3)5ONO]Cl2 Stereoisomers - may be nonrepresentational or optical Geometric: different nonrepresentational arrangements of same ligands Ex. [Pt(NH3)2Cl2] Squargon planar geometry 2 geometric isomers: Cis Trans cis-platin binding to DNA [Co(NH3)4Cl2]Cl cardinal geometric isomers: cis & trans cis isomer cis isomer (rotated 90°) trans isomer [Co(NH3)3Cl3] two geometric isomers: fa cial & meridional trans isomer fac Optical Isomers (Enantiomers) mer differ exclusively in that they ar non-superimposable mirror images.
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(like left and make up hands) Objects that are not superimposible on their mirror images are said to be Chiral (they posses the quality of handedness) amino acidsare chiral: Chiral carbon: A carbon atom in a molecule is chiral if 4 different groups are attached to the C. Ex. CHBrClF Chirality of a metal complex with chelate echo: [Co(en)3]3+ : The chelate rings in [Co(en)3]3+ make thecomplex ion chiral. The optical isomers (or enantiomers) differ on ly in that they are non-superimposable mirro! r images. (like left and right hands) Chiral molecules are optically active the enantiomers rotate plane polarized well-heeled equally, but in opposite directions. Other physical properties are the same for enantiomers (optical isomers). 1. How legion(predicate) geometrical isomers are there for [Cr(H2O)4Cl2]+ ? 2. Draw the isomers (geometrical & optical) for [Co(en)2Cl2]+. electronic Structure in Coordination Complexes Ligand Field...If you want to get a wide-eyed essay, point it on our website: OrderCustomPaper.com

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