Question

i need help with 16-18

: Short answers. Please answer the following questions in the space provided next to each question. Answer each question to the best of your ability, Be sure to show your thought process. 16. C. D. E and F. Consider the following energy diagram with energy maxima and minima marked as A, B. 45 kcalimol 19 kmol 45 kcalmol 19kmol 360 300 180 240 60 pihedral angle a) The conformations at a gap of 60° of the compound are shown in the table below in a random order. Based on the dihedral anoles and relative eneray shown in the graph, label the conformation shown as A, B, C. etc. that corresponds to the same labels in the graph above. Total strain energy of confirmation A is also shown in the graph that is hint to you to find out which confirmation is A. 12 pts Label: A, B, C. D. E or F Confirmation CH CHi H H НCH Н. H CH3 H H&C CH H. -H H НCH, H Н.С Kuaua ago CHT H CHy CHi H C H H H. b) What is the IUPAC name of this hydrocarbon? 1pt c) Calculate the total eneray of interactions in any one of the confimations you have assigned the label B, C, E or F. (2 pts) 17. alcohol, amine, or alkyl halide functional group is present, classity it as primary (1), secondary (2"), or tertiary (3') as appropriate (e.g. "3 alkyl halide) (10 pts) Circle and identify all functional groups present in the molecule shown below, It the OH NH a) Draw the other chair confirmation of the cyclohexane based compound shown below (5 pts) 18. CH H -CH CH H3C b) What is the name of this compound? (3 pts) c) Circle the most stable (lower energy) conformation in part a of this question. (2 pts) d) Explain the reasons for your choice in part b of this question (5 pts)

Answer 1

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Confiramation Enengy Cesl culabirn Label: A,B,e, D, E UF 0.9 KCal CH CH1 =0.9 kCal H v CH-H intaroctim gaunch) 1 CH-CHintractom (ganch) 1-3 kCa 1-3+1-3+) 1 3.6 kal H 2-Cth-H eclipns intaroctin H-H 4 KCa Enery -4+1+) (Wigust kcal A (ABUNO 1- e-Ct eelipul intvaetion H-H H 1:2 3.6 ka R CH-H ellpsed intrraction 1 (Luant,tobile) CH 2- et-H goueh intractim 0.9 сHз H 0.9 kia kc 2 Cty-H gauch interactin 4 Ct-CH ganch intavoctin Butame IUPAC Nome

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