How many unique 1 H NMR signals exist in the spectrum of the following compound: 1,3-dibromobenzene?

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queen_honey_blossom answered 1 year ago

How many unique 1H NMR signals exist in the spectrum of the following compound?

- Draw a hypothetical 1D ^1 H NMR spectrum of a protein? - Mark the expected...

- Draw a hypothetical 1D ^1 H NMR spectrum of a protein? - Mark the expected locations for backbone amides and side chain methyl groups

Identify the compound A (C5H10O) with the proton NMR spectrum shown. Compound A has IR absorptions...

Identify the compound A (C5H10O) with the proton NMR spectrum shown. Compound A has IR absorptions at 3200–3600 cm–1 (strong, broad), 1676 cm–1 (weak), and 965 cm–1, and also has 13C NMR absorptions (attached protons in parentheses) at δ 17.5 (3), δ 23.3 (3), δ 68.8 (1), δ 125.5 (1), and δ 135.5 (1). Compound A may be resolved into enantiomers; draw one molecule of A, omitting wedge/dash bonds.

A compound has a molecular formula of C4H6O2 and exhibits the following 13C NMR spectrum. δ...

A compound has a molecular formula of C4H6O2 and exhibits the following 13C NMR spectrum. δ 51.32, 44.17 Which of the compounds listed below would be consistent with this structure? A compound has a molecular formula of C5H8O2 and exhibits the following 13C NMR spectrum. δ 199.83, 197.54, 29.22, 23.70, 6.95 Which of the compounds listed below would be consistent with this structure? A compound has a molecular formula of C4H6O2 and exhibits the following 13C NMR spectrum. δ 51.32,...

The proton NMR spectrum for a compound with the formula C7H14O is shown below along with...

The proton NMR spectrum for a compound with the formula C7H14O is shown below along with carbon-13 spectral data in tabular form. (It may be necessary to expand (zoom) some of the 1H signals to view spin-spin splitting details.) This compound exhibits strong infrared absorption at 1717 cm-1, but the 1500-1650 cm-1 region is empty. 13C Data Normal Carbon DEPT-135 DEPT-90 Proton Shift Relative Area 13.8 Positive No peak 0.91 3.2 17.2 Negative No peak 1.09 5.8 18.2 Positive No...

What compound is used as a standard for location of NMR signals? Select one: a. acetone,...

What compound is used as a standard for location of NMR signals? Select one: a. acetone, CH3COCH3 b. silicon grease c. water d. deuterated water, D2O e. deuterated chloroform, CDCl3 f. trimethylsilane, (CH3)4Si g. chloroform, CHCl3

Sketch the appearance of the 1 H-NMR spectrum of diethyl ether using J = 6.97 Hz...

Sketch the appearance of the 1 H-NMR spectrum of diethyl ether using J = 6.97 Hz and the data in Q2 in a spectrometer operating at (a) 350 MHz, (b) 650 MHz.

1. How can the NMR spectrum be used to show that there is no starting material...

1. How can the NMR spectrum be used to show that there is no starting material left in the products? 2. Can the NMR spectrum be used to determine the ratio of 2-hexanol to 1-hexanol? 3. What produces the peak around 3.65 ppm in the NMR?

Would cyclohexanone have 2 or 3 unique hydrogen for H-NMR?

In H2O, the 31P NMR spectrum of the compound gives 2 lines shifted from each other...

In H2O, the 31P NMR spectrum of the compound gives 2 lines shifted from each other by about 1ppm, corresponding to the hydrate and ketone in the ratio of 60:40. You want to measure the rates of interconversion between them in the range of 0.1-3.0 per second using a cross relaxation method. Both the hydrate and ketone have T1's of 5.0 second and linewidths, delta v1/2 of 2 hz. The experiments are performed in a field such that the 31P...

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