"> (Answered) For the compounds A-E below, predict how many different sets of proton signals you should see in the NMR (label each different H set with a,b,c,... - Tutorials Prime

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(Answered) For the compounds A-E below, predict how many different sets of proton signals you should see in the NMR (label each different H set with a,b,c,...


For the compounds A-E below, predict how many different sets of proton signals you should see in the NMR (label each different H set with a,b,c,...


1. For the compounds A-E below, predict how many different sets of proton signals you should see in the NMR (label each different H set with a,b,c, etc. and indicate the relative total intensity of the different signals).       2. Show the structure of the bromobutane isomer responsible for the NMR spectrum below. Assign the 4 signals to the structure. (Hint: you may want to sketch out structures of the 4 possible C4H9Br isomers)      3.    Predict the approximate (+/-1 ppm) position of each of the different H signals in the molecules below in ppm relative to TMS (note: C6H5 = a phenyl group) 4. Predict the splitting patterns for compounds B-C above (e.g., A has 3 singlets-no splitting)                                                                                                            5.  The nmr spectrum shown fits which of the following compounds the best?1.

 

For the compounds A-E below, predict how many different sets of proton signals

 

you should

 

see in the NMR (label each different H set with a,b,c, etc. and indicate the relative total

 

intensity of the different signals).

 

A) (CH

 

3

 

)

 

2

 

C=CH

 

2

 

B)

 

(CH

 

3

 

)

 

2

 

CHOH

 

C)

 

CH

 

3

 

CHBrCH

 

2

 

CH

 

3

 

D)

 

H

 

3

 

C

 

H

 

H

 

CH

 

3

 

a

 

b

 

[

 

e.g., 2 sets, a & b in ratio of 6:2] 2. Show the structure of the bromobutane isomer responsible for the NMR spectrum below. Assign the 4 signals to the structure. (Hint: you may want to sketch out structures of the 4 possible C 4 H 9 Br isomers) NMR of C 4 H 9 Br 3. Predict the approximate (+/-1 ppm) position of each of the different H signals in the molecules below in ppm relative to TMS (note: C 6 H 5 = a phenyl group) A) CH 3 OC 6 H 5 B) ClCH 2 CH 2 CO 2 H C) CH 3 CH 2 C=O a b a b c a b H c 4. Predict the splitting patterns for compounds B-C above (e.g., A has 3 singlets-no splitting) 5. The nmr spectrum shown fits which of the following compounds the best? H 3 C CH 2 O CH 3 H 3 C CH 2 C CH 3 O H 3 C CH 2 C O O CH 3 H 3 C CH 2 O C CH 3 O a) b) c) d) Assign signals to the structure you choose . /tutors-problems/Business/10716152 10716152 I need assistance with a research paper for the topic barriers of communication I need assistance with a research paper for the topic barriers of communication /tutors-problems/Business/10716156 10716156 What impact did the evolving frontier and its eventual closing have on the culture of texas? What impact did the evolving frontier and its eventual closing have on the culture of texas? What role did Texas play in the agrarian revolt /tutors-problems/Business/10716158 10716158 HOMEWORK 1 - ANDERSON ASSOCIATES Anderson Associates of Bridgebury, Connecticut, performs general construction work. In November 2016, the company... Hi Can someone help me with this please. 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The controller of the Red Wing Corporation is in the process of preparing the company’s 2016 financial statements. She is trying to determine the correct balance of cash and cash equivalents to be reported as a current asset in the balance sheet. The following items are being considered:    a. Balances in the company’s accounts at the First National Bank; checking $15,300, savings $23,900. b. Undeposited customer checks of $7,000. c. Currency and coins on hand of $760. d. Savings account at the East Bay Bank with a balance of $580,000. This account is being used to accumulate cash for future plant expansion (in 2018). e. $56,000 in a checking account at the East Bay Bank. The balance in the account represents a 20% compensating balance for a $280,000 loan with the bank. Red Wing may not withdraw the funds until the loan is due in 2019. f. U.S. Treasury bills; 2-month maturity bills totaling $33,000, and 7-month bills totaling $38,000.    Required: 1. 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