15.18 Determine the number and symmetry designations of the infrared-active C-O stretching modes in the following derivatives of Mo(CO)6. a. Mo(CO),PR3 c. trans-Mo(CO)4(PR3)2 e. mer-Mo(CO)3(PR3)3 b. cis-Mo(CO)4(PR3)2 d. fac-Mo(CO)3(PR3)3
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- 15.18 Determine the number and symmetry designations of the infrared-active C-O stretching modes in the following derivatives of Mo(CO)6. a. Mo(CO),PR3 c. trans-Mo(CO)4(PR3)2 e. mer-Mo(CO)3(PR3)3 b. cis-Mo(CO)4(PR3)2 d. fac-Mo(CO)3(PR3)34. Describe an object in nature (not a molecule or ion!) whose symmetry corresponds to each of the following point groups, and give a brief explanation why. а. С, b. C2v C. D4hWhich of the following molecule(s) belong to CooV point group? 1. CO 2. H2 3. HCI 4. 02 * 1 and 3 3 and 4 2 and 3 1 and 2 2 and 4
- Which of the following depictions of a ligand group orbital would have the correct symmetry to form a molecular orbital with t, bonding character with a 2p, orbital on carbon? **Indicate the symmetry of the following orbitals: a) Fluorine px orbitals of OF2. b) Fluorine pz orbitals of BF3. c) Oxygen px, Py, and pz orbitals of the CO2 d) Gold s, p, and d orbitals of the[AuCl4]- anion (square-planar structure).1. Find the molecular geometries and list the symmetry elements of the following molecules and assign the molecules to point groups: a. HF, b. IF5, c. XeO2F2 d. CH4
- determine the symmetry adapted linear combinations of borane BH3Assign the molecular geometry, THREE symmetry elements and the point group for ANY THREE of the following molecules. Molecules Molecular Geometry Symmetry Elements Point Group (Shape) 1. CO 2. CCI, (Not planar) 3. [PtCl,J* (Square planar) 4. NH3 6.XeF4 A O CCIA.B O Which molecule does not have (tetrahedral ) Td symmetry? SIFA .CO GEH4D O
- The point group of [PtCl2Br2]2 , trans and square planar, is: а. Td b. C2h С. D2h d. Cs1. Where are the symmetrical classifcations on the molecules? 2. What is the point group for each one? 3. Chiral: yes or no? SÜCI5 (Br3)- IF5 BrF 31). Which d-orbitals become t, orbitals according to the character table below? Character table for Ta point group Esc, c, 6s, linear, quadratie rotations TOO I R, R. R K. y. ) a. d and d. b. dand d, c. dand d d. d, and d. 2). Which one of the following reactions is incorrect? a. [PtBr.) + 2PR, à trans-[PtBr,(PR,)) + 2Br b. [Pt(NH,)Br] + NH, àcis-[Pt(NH,),Br.] + Br c. [Pt(CH,=CH,)CIJ + NH, àtrans-[Pt(CH,=CH,)(NH,)CIJ + CI d. [Pt(PR,).J" + 2CI à trans-[PICI,(PR,)) + 2PR, 3). What is the crystal field stabilization energy of (Ir(bpy).]^? . а. О b. -2.4Ao + 3P C. -2.4Ao + 2P d. -0.4Ao + P 4). What is the crystal field stabilization energy of (Mn(H,O).}^? (H,O is a weak field ligand) а. 0 b. 2Δο + 2P C. -Ao + 2P d. -Ao +P