supplemental to lecture 6

supplemental to lecture 6 - How do we identify a molecule s...

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Unformatted text preview: How do we identify a molecule s point group ? Identify all of the symmetry elements . Identify just the key symmetry elements . Or, With the aid of a set of character tables With the aid of a flow chart Or, 2 3 4 6 Let s find all of the symmetry elements associated with BF 3 v mirror plane contains principal axis (C 3 ) h mirror plane is perpendicular to principal axis (C 3 ) F 1 B F 3 F 2 2C 3 v h v C 2 C 2 C 2 Summary : Summary : D 3h E, 2 C 3 , 3 C 2 , h , 3 v , 2 S 3 F 1 B F 3 F 2 2C 3 v h v C 2 C 2 C 2 The D The D 3h 3h Character Table Character Table point group symmetry elements orbital fxns orbital symmetry labels C 2 is colinear with principle axis (C 4 ) C 2 is perpendicular to principle axis (C 4 ), and contains Cl s C 2 is perpendicular to principle axis (C 4 ), and bisects edges Let Let s look at a different s look at a different molecule, PtCl molecule, PtCl 4 2 2 : : Pt Cl Cl Cl Cl 2 C 4 C 2 ' C 2 '' h v d C 2 three different kinds of mirror planes Summary :...
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This note was uploaded on 01/19/2012 for the course CHEM 312 taught by Professor Staff during the Summer '08 term at University of Washington.

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supplemental to lecture 6 - How do we identify a molecule s...

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