classes_Spring08_172ID39_ProblemSet2_solutions

Classes_Spring08_172 - Chemistry 172/273 Problem Set#2 Due Monday April 28 in class Spring 2008 Note Do not use a pencil Use black ink only Try to

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1 Chemistry 172/273 Problem Set #2 Due Monday, April 28, in class Spring 2008 Note : Do not use a pencil. Use black ink only. Try to write as neatly as possible. If I don’t understand your handwriting, you will not get any points. 1 . Assign the symmetry point group for the following ions and molecules: a. SeCl 4 C 2 v b. I 3 - D h c. PSCl 3 C 3 v d. IF 4 - D 4 h e. PH 2 - C 2 v f. TeF 4 2- D 4 h g. N 3 - D h h. SeOCl 4 C 2 v i. PH 4 + T d j. NO - C v 2 . Assign the symmetry point group for the following molecules and objects: a) Cu(CH 3 COCHCHO) 2 Cu O OO O C 2 h a) 1,1’-dichloroferrocene Cl Cl Fe C 2 h b) POCl 3 O P Cl Cl Cl
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2 C 3 v c) Tennis ball (including the seam) lateral view top view D 2 d d) trans [CrCl 2 (OH 2 ) 4 ] + Cr H 2 O H 2 O OH 2 OH 2 Cl D 4 h e) 1,3,5-trichlorobenzene Cl Cl Cl D 3 h f) trans Pt(NH 3 ) 2 Cl 2 Pt H 3 N NH 3 D 2 h g) SF 5 Cl S F FF F Cl F C 4 v
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3 h) BFClBr F B Cl Br C s i) PF 2 + F P F C 2 v 3. Using the D 2 d character table: D 2 d E 2 S 4 C 2 2 C 2 2 σ d A 1 1 1 1 1 1 A 2 1 1 1 -1 -1 B 1 1 -1 1 1 -1 B 2 1 -1 1 -1 1 E 2 0 -2 0 0 a. Determine the order of the group. h=8 (number of symmetry operations, by counting) b. Verify that the E irreducible representation is orthogonal to each of the other irreducible representations.
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This note was uploaded on 10/12/2009 for the course CHEM C172 taught by Professor Zink,j during the Spring '08 term at UCLA.

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Classes_Spring08_172 - Chemistry 172/273 Problem Set#2 Due Monday April 28 in class Spring 2008 Note Do not use a pencil Use black ink only Try to

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