2 - Chemistry 172/273 Problem Set #2 Spring 2009 1. Assign...

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1 Chemistry 172/273 Problem Set #2 Spring 2009 1 . Assign the symmetry point group for the following ions and molecules: a. SeCl 4 b. I 3 - c. PSCl 3 d. IF 4 - e. PH 2 - f. TeF 4 2- g. N 3 - h. SeOCl 4 i. PH 4 + j. NO - (considering N the central atom) 2 . Assign the symmetry point group for the following molecules and objects: a) Cu(CH 3 COCHCHO) 2 Cu O OO O b) 1,1’-dichloroferrocene Cl Cl Fe c) POCl 3 O P Cl Cl Cl d) Tennis ball (including the seam) lateral view top view
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2 e) trans [CrCl 2 (OH 2 ) 4 ] + Cr H 2 O H 2 O OH 2 OH 2 Cl f) 1,3,5-trichlorobenzene Cl Cl Cl g) trans Pt(NH 3 ) 2 Cl 2 Pt H 3 N NH 3 h) SF 5 Cl S F FF F Cl F i) BFClBr F B Cl Br j) PF 2 + F P F 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
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3 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. b. Verify that the E irreducible representation is orthogonal to each of the other irreducible representations. c. For each of the irreducible representations verify that the sum of the sqares of the characters equals the order of the group.
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2 - Chemistry 172/273 Problem Set #2 Spring 2009 1. Assign...

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