Allene, C3H4, has point group symmetry D2d, with character table provided below. It can be embedded in a rectangular prism as shown, with Cartesian axes as defined here. D2d E 2S4 C₂ 2C₂' 20d A₁ 1 1 1 1 1 A2 1 1 1 -1 -1 В1 1 -1 1 1 -1 B₂ 1 -1 1 -1 1 E -2 0 0 1Η 2H C C₂^x X Y C₂¹ (a) Consider the four 1s orbitals on the hydrogen atoms of allene (numbered as shown). The symmetry transformations of these functions are shown on the table below with two of the symmetry operations omitted. Find the results for the two missing sets of results (shaded red) and complete the table. = H Пиши н C SA Z Here, |;) |1s;) (the 1s orbital on atom H;). (Note that the two C₂ axes from the character table have been labeled C₂' and C₂", and the od' plane contains the z-axis, H₁ and H₂, while the od" plane contains the z-axis, H3 and H4.) 3 R = Ê| S₁ S₂³ C₂ C₂ C2" ôáôáí R$₁ $1 03 04 93 94 R$₂ $2 ΦΑ $3 ΦΑ $3 R$3 $3 $2$1 R$4 ΦΑ Φ1 $2 20 $2 Φ1 $2 Φ1 $3 Ф4 (b) Find the reducible representation for the symmetry operations applied to the set of four 1s orbitals in allene. (c) Reduce the representation found for the 1s orbitals into its component irreducible representations.
Allene, C3H4, has point group symmetry D2d, with character table provided below. It can be embedded in a rectangular prism as shown, with Cartesian axes as defined here. D2d E 2S4 C₂ 2C₂' 20d A₁ 1 1 1 1 1 A2 1 1 1 -1 -1 В1 1 -1 1 1 -1 B₂ 1 -1 1 -1 1 E -2 0 0 1Η 2H C C₂^x X Y C₂¹ (a) Consider the four 1s orbitals on the hydrogen atoms of allene (numbered as shown). The symmetry transformations of these functions are shown on the table below with two of the symmetry operations omitted. Find the results for the two missing sets of results (shaded red) and complete the table. = H Пиши н C SA Z Here, |;) |1s;) (the 1s orbital on atom H;). (Note that the two C₂ axes from the character table have been labeled C₂' and C₂", and the od' plane contains the z-axis, H₁ and H₂, while the od" plane contains the z-axis, H3 and H4.) 3 R = Ê| S₁ S₂³ C₂ C₂ C2" ôáôáí R$₁ $1 03 04 93 94 R$₂ $2 ΦΑ $3 ΦΑ $3 R$3 $3 $2$1 R$4 ΦΑ Φ1 $2 20 $2 Φ1 $2 Φ1 $3 Ф4 (b) Find the reducible representation for the symmetry operations applied to the set of four 1s orbitals in allene. (c) Reduce the representation found for the 1s orbitals into its component irreducible representations.
Physical Chemistry
2nd Edition
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Ball, David W. (david Warren), BAER, Tomas
Chapter13: Introduction To Symmetry In Quantum Mechanics
Section: Chapter Questions
Problem 13.21E
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