The relative signal intensites expected for the 1 H NMR and 13 C NMR spectra of the given sample S i ( C H 3 ) 4 has to be determined. Concept Introduction: The 1 H N M R spectrum of a compound provides some vital information that is required to predict the structure of the compound. The chemical shift values can predict the groups that are present in the molecule. The splitting of signals by the ( N + 1 ) rule predicts the number of hydrogens or protons attached to the adjacent carbon in a carbon chain of a compound. With this information, the structure of the compound can be predicted. The signals in the 1 3 C N M R spectrum of a compound is proportional to the number of carbons that are present in the different environment within the molecule. The carbon which is present in the electron-rich environment shows a signal at a lower frequency and vice-versa. Therefore, the carbon that is present nearest to the electron-withdrawing groups produces a high-frequency signal. Tetra methyl silane: The NMR spectrum of any compound is taken with reference to a standard compound called reference compound. Generally, tetramethylsilane (TMS) is taken as the reference compound. The methyl protons of TMS are equivalent and produces only one sharp peak at the rightmost end of the scale.

Question

For each reaction below, decide if the first stable organic product that forms in solution will create a new CC bond, and check the appropriate box. Next, for each reaction to which you answered "Yes" to in the table, draw this product in the drawing area below. Note for advanced students: for this problem, don't worry if you think this product will continue to react under the current conditions - just focus on the first stable product you expect to form in solution. ? NH2 MgBr Will the first product that forms in this reaction create a new CC bond? ○ Yes ○ No MgBr ? Will the first product that forms in this reaction create a new CC bond? O Yes O No Click and drag to start drawing a structure. :☐ G x c olo Ar HE

Answer 1

Question

Chapter 13, Problem 13.11P

Interpretation Introduction

Interpretation:

The relative signal intensites expected for the 1H NMR and 13C NMR spectra of the given sample Si(CH3)4 has to be determined.

Concept Introduction:

The 1H NMR spectrum of a compound provides some vital information that is required to predict the structure of the compound. The chemical shift values can predict the groups that are present in the molecule. The splitting of signals by the (N+1) rule predicts the number of hydrogens or protons attached to the adjacent carbon in a carbon chain of a compound. With this information, the structure of the compound can be predicted.

The signals in the 13C NMR spectrum of a compound is proportional to the number of carbons that are present in the different environment within the molecule. The carbon which is present in the electron-rich environment shows a signal at a lower frequency and vice-versa. Therefore, the carbon that is present nearest to the electron-withdrawing groups produces a high-frequency signal.

Tetra methyl silane: The NMR spectrum of any compound is taken with reference to a standard compound called reference compound. Generally, tetramethylsilane (TMS) is taken as the reference compound. The methyl protons of TMS are equivalent and produces only one sharp peak at the rightmost end of the scale.

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For each reaction below, decide if the first stable organic product that forms in solution will create a new CC bond, and check the appropriate box. Next, for each reaction to which you answered "Yes" to in the table, draw this product in the drawing area below. Note for advanced students: for this problem, don't worry if you think this product will continue to react under the current conditions - just focus on the first stable product you expect to form in solution. ? NH2 MgBr Will the first product that forms in this reaction create a new CC bond? ○ Yes ○ No MgBr ? Will the first product that forms in this reaction create a new CC bond? O Yes O No Click and drag to start drawing a structure. :☐ G x c olo Ar HE

Predicting As the lead product manager at OrganometALEKS Industries, you are trying to decide if the following reaction will make a molecule with a new C - C bond as its major product: H₂N O H 1. ? 2. H3O+ If this reaction will work, draw the major organic product or products you would expect in the drawing area below. If there's more than one major product, you can draw them in any arrangement you like. Be sure you use wedge and dash bonds if necessary, for example to distinguish between major products with different stereochemistry. 0 If the major products of this reaction won't have a new CC bond, just check the box under the drawing area and leave it blank. فا Explanation Check Click and drag to start drawing a structure.

Highlight the chirality (or stereogenic) center(s) in the given compound. A compound may have one or more stereogenic centers. OH OH OH OH OH OH