What is the approximate dihedral angle between the two chlorine atoms in the least stable conformation of trans-1,2-dichlorocyclohexane? Show your Newman Projection.
1) 0
2) 60
3) 120
4) 180
What is the approximate dihedral angle between the two chlorine atoms in the least stable conformation...
QUESTION 48 Which of the following is the most stable conformation or els-1-sopropyl-3-methylcyclohexanet HH HORS QUESTION 49 What is the approximate dihedral angle between the two chlorine atoms in the diequatorial conformation of trans-1,2-dichlorocyclohexane? 0° 60° 120° 180°
Please answer all 3 questions Which represents a pair of resonance structures? NH NH2 and H3C Hgc 9 CC=CH2 and 1 Hac H H H CH OH O and OOH нссон and TH H Hyc Copt н" 3 OO QUESTION 27 How many stereoisomers of 3-penten-2-ol exist? 2 3 4 0 0 QUESTION 28 What is the approximate dihedral angle between the two chlorine atoms in the diequatorial conformation of trans-1,2-dichlorocyclohexane? 0° 60° 120° 180° MacBoo
10. a. Draw the Newman projections for the dihedral angles listed below for 2-methylpentane if you sight down the 2-3 carbon bond (Assume that the least stable conformation corresponds to the 0° dihedral angle and assume that all rotations are counter clockwise) Using the energy values provided below calculate the total strain energy for each of the listed conformations. b. vii. 0 vili. 60° ix. 120 x. 180° xi. 240 xii. 300°
H5.31 - Level 2 Consider the most stable chair conformation of all cis-4-tert-butyl-1,2-dimethylcyclohexane (all substituents are cis on the molecule). What is the bond angle between the two methyl groups when looking down the C1-C2 bond? A 45˚ B 60˚ C 109.5˚ D 120˚ E 180˚
I 6. Draw the Newman projection that represents the least stable conformation of 2-methylbutane (consider rotation about the C2-C3 bond) (3 points)
In the lowest energy chair conformation of trans 1, 4-dichlorocyclohexane, how many equatorial positions are occupied by hydrogen atoms? a) 2 b) 3 c) 4 d)5 Primary constituents of gasoline is a) a mixture of C_3-C_4 alkanes b) a mixture of C_5-C_ alkanes c) a mixture of C_9-C_16 alkanes d) a mixture of C_16 and up alkanes Use curved arrows to show the movement of electron of electron pairs in the reactions. a) b) Please draw three Newman projections of...
1. Rank the following cyclic alkanes from most stable (1) to least stable (4). (2 pts) 2. From the sawhorse projections below, circle the highest energy conformation for ethane. (2 pts) HH Hн HHH HH Hy Yo ΗΜΗ 3. Circle the chair conformation below that represents the lowest energy conformation for cis-1,3- dimethylcyclohexane? (2 pts) SSSSSS 4. In the figure below, identify the Newman projections by the letter (A, B, C, or D) which best describes each conformation for 1-chloropropane....
2. (10 points) For the following molecule: Cl Cl (a) Provide the IUPAC name for the above molecule. On the above structure, assign the configuration of each chiral center using CIP notation. (b) Draw the Newman projection looking down the C2-C3 bond. What is the dihedral angle between the two chlorine atoms? (c) Draw the Newman projection looking down the C2-C3 bond of the conformer that is most unstable. Indicate whether there is a molecular dipole moment for this conformer...
42. What is the dihedral angle between H, and H. (see below)? (a) 09 (6) 30° (c) 60° (d) 120° (e) 180° H 43. What relationship does this portray? (a) Gauche (b) Anti (c) Peri (d) Eclipsed (e) Staggered.
b. Which of the following alkanes has the highest bolling point? 2,3-dimethylbutane: 2-methylpentane; 3-methylpentane; hexane c. Which of the following compounds can adopt a chair conformation in which there are no axial methyl groups? 1,1-dimethylcyclohexane; cis-1,2-dimethylcyclohexane; trans-1,2-dimethylcyclohexane; trans-1,3-di methylcyclohexane d. Which of the following compounds can adopt a chair conformation which there are no axial methyl groups? cis-1,2-dimethylcyclohexane; cis-1,3-dimethylcyclohexane; trans-1,3-dimethylcyclohexane; cis-1.4-dimethylcyclohexane cis-1,2-dimethvcyclohexane (Enter the numerical value only, without any units)? e. What is the approximate di hedral angle between the...