In an IR spectrum, in general...(A). modes with very high symmetry appear at very high frequencies(B). if a vibration mode involves a variation of the dipole moment of the molecule, it is not active in IR(C). the same number of bands due to completely symmetric modes as to asymmetric modes are observed(D). the symmetry of the mode influences the intensity of the corresponding bandIndicate the correct option.

In an IR spectrum, in general...(A). modes with very high symmetry appear at very high frequencies(B). if a vibration mode involves a variation of the dipole moment of the molecule, it is not active in IR(C). the same number of bands due to completely symmetric modes as to asymmetric modes are observed(D). the symmetry of the mode influences the intensity of the corresponding bandIndicate the correct option.

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter15: Introduction To Electronic Spectroscopy And Structure

Section: Chapter Questions

Problem 15.1E: Linearly polarized light can be assigned a specific irreducible representation of a symmetry point...

See similar textbooks

Similar questions

Determine the point groups of the following molecules. a Fe(CO)5, which has a trigonal bipyramidal structure, b CO32, which has three resonance structures that contribute to its overall shape, c The perfectly staggered conformation of ethane, d The perfectly eclipsed conformer of ethane.
Construct the symmetry-adapted linear combination molecular orbitals for hydrogen sulfide, H2S.
Explain why 1g is the ground state for H2+ . By combining your answer with the answer to Problem 5, what conclusions can you draw about the molecular orbital description of the bond in H2+ ?
What is the bond order for the lowest excited state of H2+ ? From this single result, propose a general statement about unstable diatomic molecules and bond orders.
Use molecular orbital arguments to decide whether or not the difluoride dianion, F22, should exist as a stable ion.
Linearly polarized light can be assigned a specific irreducible representation of a symmetry point group. If the electronic ground state of benzene has A1g symmetry and y- polarized light has the label E1u, what are the symmetry labels of allowed excited electronic states? Use the D6h character table in Appendix 3.
4. Explain what you understand when it comes to symmetry, symmetry element and point groups, giving detailed information about their applications,
ii only
From (d) please
schematically show the pi electronic enery levels of hexatriene
AutoSave O ff 331SYL22 - - O Search (Alt+Q) Yuleymi Gondola Protected View · Saved to this PC File Design References Mailings Review View Help P Comments v A Share Home Insert Draw Layout The following are some normal modes of vibration for several molecules. In each case: Determine the point group for the molecule Determine how the vibration transforms under each symmetry operation of the point and assign the appropriate irreducible representation State whether the vibration is IR active and/or Raman active Cote (benzene): C=C stretch c=C stretch a. e. "Breathing" CC twist C=C twist b. "Flexing" Asymmetric C-H and C-Ci stretches Asymmetric C-H and C-Ci stretches C. g. Symmetric C-H and C-Cl stretches Symmetric C-H and C-CI stretches Asymmetric C-H stretches d. h. k. Page 6 of 6 3011 words Text Predictions: On O Focus 100% 12:01 PM O Type here to search 12% 4 71°F * 4) ENG 3/23/2022 19 近

(c) An octahedral cluster molecule E6 in Oh point symmetry can be formed without a central atom and is bonded together using the six s and eighteen p orbitals on the six atoms. Each vertex comprises a sp hybrid orbital (radial) pointing into the cluster, and two p orbitals (tangential) at right angles to each other and to the centre of the cluster (see figure below). These are the same as the ligand orbitals used in o- and x-bonding in octahedral transition metal complexes. The bonding overlaps between these orbitals are shown below in A, B and C, and two of these are each part of a triply degenerate set and the other is singly degenerate - remember in O₂ symmetry x, y and z are degenerate. E E E E two tangential p orbitals B The reducible representation for these bonding orbitals is: radial sp orbital Oh E 8C 6C₂ 6C 3C₂ i 684 8S6 30h Ibonding 7 1 -1 1 -1 1 1 11 (i) Determine the three irreducible representations for the orbitals that contribute to cluster bonding to form the seven…