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- Rank the compounds in order of increasing symmetry: (a) OF2, (b) CF4, (c) NF3.There are two compounds of the formula Pt1NH322Cl2:The compound on the right is called cisplatin, and the compoundon the left is called transplatin. (a) Which compoundhas a nonzero dipole moment? (b) One of these compoundsis an anticancer drug, and one is inactive. The anticancerdrug works by its chloride ions undergoing a substitutionreaction with nitrogen atoms in DNA that are close together,forming a N—Pt—N angle of about 90°. Which compoundwould you predict to be the anticancer drug?Which of the 7 isomers of dichlorocyclohexane possess a plane of symmetry? O 1,1; cis-1,2; cis-1,3; cis-1,4; trans-1,4 cis-1,2; cis-1,3; O 1,1; cis-1,2; cis-1,3; cis-1,2; cis-1,3, cis-1,4, more than one answer
- The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule. Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas: (a) C24H30 (b) C15H22 (c) C,H¡Cl,N(a) Draw the orbital picture for :C=0: showing the explicit overlap of the contributing AOs. (b) How many MOs of T symmetry are there in total? (c) Draw the orbital energy diagram for CO and identify the HOMO and LUMO.(b) Using appropriate diagram(s), show which of the symmetry operation(s) does the [SO-]²" ion have: (i) C4 (ii) ơh (iii) S4.
- The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule. Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas: (a) C9H12 (b) C,H40| (c) C,H,N2The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule.Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas:(a) C9H12(b) C14H18(c) C10H8N26) Given below are the molecule BH3, its character table, and its molecular orbital diagram. By convention, the z-axis lies along the principal rotation axis: (a) What Mulliken symbol represents the symmetry of the MOs I-V? (b) Which of the given atomic orbitals on boron would match the MOS I-V? (c) Depict the in-phase (bonding) and out-of-phase (anti-bonding) of these MOS. B 2p orbitals B 2s orbitals II H 2s orbitals D₂ A, A₂' A," E" 1 1 2 1 1 2 2C, 3C₂ 0₂ 25, 1 1 1 1 1 -1 1 -1 1 -1 0 1 2 -1 -1 30, 1 1 -1 R₂ -1 0 -1 -1 -1 1 1 0 (x, y) (R., R.) x+y²,2² (x²-y, xy) (xz, yz)
- Does the minimization of electron-electron repulsions correlate with Hund's rule?Consider the three following molecules and answer the questions below.HC≡CHH2C=CH2H3C-CH3 (3 conformers with different symmetry)(a) For each molecule, including all conformers as indicated, draw the molecule, assign it toits point group, and draw on the diagram the symmetry elements that were used to makethe assignment. State in each case whether or not the species is dipolar and/or chiral.(b) If one hydrogen atom in each molecule is substituted by a chlorine atom, sketch the newmolecules and assign them to their point group. For this set of mono-chloro compounds: state the most common point group state how many are chiral state how many are dipolar state which molecule/conformer has the highest symmetry point group state which molecule/conformer has the lowest symmetry point group identify which of these molecules/conformers have three different H atomenvironments(c) For the dichlorinated versions of the molecules/conformers considered in part (a): state the most common point…Which of the following compounds is most polarizable? (A) (B) (C) (D) Compound A )Compound B )Compound C O Compound D