for each spectral data set in (1) determine the number of identical carbons gene
ID: 501915 • Letter: F
Question
for each spectral data set in (1) determine the number of identical carbons generating each signalOnly answer question 3 please CH, CH or CH) of each carbon PROBLEMS set, determine the general type C, carbon? How many degrees of 1. signal. Are there any r more than one For each spectral data unsaturation are there in each fo 502, d 14.4, q 54.1, q 75.3, t 166, q 107.1, d 14.3 q 1433, d 131.2, d 20.1,t 35.5,t 20.4, t 35.0, d 360, 683, t 39.4, d 60.0, t 176.6, s carbons (carbonyl, C C, 2. For each spectral data set in (1) the general types alky) for each CNMR signal. 3. For each spectral data set in (1), determine the number of identical carbons generating each signal. 4. Draw all of the constitutional isomers of octane. Name each one. For each isomer a. the number of different sets of carbons in its structure. b. state whether each set of equivalent carbons would produce an up or down signal in the DEPT 135 NMR experiment rripler, or state whether each set of equivalent carbons would produce a singlet, doublet quartet in the Off Resonance Decoupled Experiment.
Explanation / Answer
Compound a: it has 8 carbons and there are 8 signals in NMR. So, there is no identical carbon atoms.
Compound b: it has six carbons with 3 NMR signals. There are three sets of identical carbon atoms. Each set contains two carbon atoms.
Compound c: it has 7 carbons and 7 signals in NMR. There are two identical carbon atoms in the compound.
Compound D: it has 7 carbons and 3 signals in NMR. There are two carbons identical giving one signal and another four carbons identical giving one signal.
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