8.21 1,2-Diiododisilane has been observed in both anti andgauche conformations. (See K. Hassler, W. Koell, K.Schenzel, J. Mol. Struct., 1995, 348, 353.) For the anti con-formation, shown here,IHHSi-SiHHa. What is the point group?b. Predict the number of infrared-active silicon-hydrogenstretching vibrations.

Part A:The molecule has C2 axis that is perpendicular to a horizontal mirror plane (σh), and an…

Answered: 8.21 1,2-Diiododisilane has been…

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 13.30E: Structural isomers can have very different point groups. Determine the point groups of...

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Assign the point group of the following coordination compounds: a) Cl. b) d) CI-Hg-Hg-ci 3- 2- 2+ ÇN NH3 H3N., Co* 'NH3 NH3 g) NC-Ni..iCN CN ČN h) Cu.."Br e) f) H3N Br Br CO j) H3N-Ag-NH3 i) OC-FeNO ON CO
Assign molecules to point groups: a.) C5N6+ (pyridinium)b.) [B12H12]2-c.) C8H8 (tub configuration)d.) H3CCF3 (eclipsed, staggered and gauche)e.)[Co(CN)5]3-f.) cis-[PtCl2Br2] (square planar)g.) 1,1'-dichloroferrocene (all unique staggered, eclipsed and gauche isomers) Please and thank you!
Give the point groups of the following molecules:
Please explain
D. Consider the reaction of RuCl, with terpyridine ligand. I. a. Draw the complex ion structure when 2 terpy ligands attach to the Ru-center.. b. Can it have more than one isomer? If so, neatly draw them. c. Identify the point group of all the isomers you have drawn.
3. Pick two of the three molecules below. Determine their point groups and whether they are chiral. Show the symmetry elements that led to your answer. 2+ PEt2 Pd-Cl 1. N(SIME3)2 THF -THE (MezSi),N! trans- [UO{N(SiMe.).}.(THF),] Palladium PCP Pincer [Ru(bipy)3]2* Complex Molecule 1 Molecule 2 Molecule 3 a. Molecule number: Point Group: Chiral or achiral: b. Molecule number: Point Group: Chiral or achiral:
2. Draw the MO diagram for the hypothetical square planar PtH42- ion. Consider only the s-interactions. Label all orbitals with the appropriate symmetry label. Include the 5d, 6s, and 6p orbitals on the metal. Plot roughly to scale. What is the point group? Use the following SALCs for the H 1s orbitals:
Predict the structure of I(CF3)Cl2. Do you expect the CF3 group to be in an axial or equatorial position? Why? (See R. Minkwitz, M. Merkei, Inorg. Chem ., 1999 , 38 , 5041.)
Ims.uop.ed Which of the following point groups would make a molecule to be polar? Select one: O D4h O C3v OTa The "group-theoretical" criterion of chirality in a molecule is: Select one:
Determine the point group of the following planar Pt(II) complexes: Pt(NH3)42: PtCl3(NH3); PtCI(NH3)3 O C2hi C2vi D2d D2h: D2d: C2v O D4h: D2d: C2v O Cavi Cavi Cav OD4h: C2vi C2v
Include pi-bonding in the MO-scheme for O, complexes 1) How many vectors will you use. 2) Work out the reducible representation for the SALCS and attempt to draw the corresponding MO that includes the pi-bonding scheme.
Assign a point group to each of the following compounds and identify how the Pz orbital on the central atom transforms under that respective symmetry. a. NH2Cl b. BF4 - c. HCN

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