1. IR spectra of 2-heptanone
will show sharp streach at around 1720cm-1 because of
carbonyl keton and streach at around 2900cm-1 dueto
C-Hstreach.
2. IR spectra of 2-heptanol will show broad streach at around 3400cm-1 due to O-H streach of alcohol and around 2900cm-1 due to C-H streach.
6. Sketch the IR data for each sample below. Only include signals for O-H, C-H, and...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, C=N, C=C, C=0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: C10H120; Bottom, IR Spectrum of Compound 23b: C16H140 1.025 1.000 m 0.975 0.950 Transmitance 0.925 0.900 0.875 0.850 3750 3500 3250 3000 2750 2500 1750 1500 1250 1000 750 2250 2000 Wavenumbers (cm-1) 1.0 0.8 0.6 Transmitance N 0.2 0.0 4500 4000 3500 2000...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, C=N, C=C, C=0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: C10H120; Bottom, IR Spectrum of Compound 23b: C16H140 1.025 1.000 m 0.975 0.950 Transmitance 0.925 0.900 0.875 0.850 3750 3500 3250 3000 2750 2500 1750 1500 1250 1000 750 2250 2000 Wavenumbers (cm-1) 1.0 0.8 0.6 Transmitance N 0.2 0.0 4500 4000 3500 2000...
organic
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices N-H, O-H, CEN, CAC, C-0, C-O, (3 points each, 6 points total) Top, IR spectrum of Compound 23a: CH120, Bottom, IR Spectrum of Compound 23: CH10 1.005 1000 0.975 m mom 0.950 Transmitance 6.900 1500 1110 1250 1000 2150 3000 1250 3500 3750 3505 2390 2000 Wavenumbers (om-1) 10 08 " ให้ 04 Transmitance 04 02 2000 1500 1000 00...
Assign the peak for both of the IR spectrum below and identify
what compound is this and draw the structure of the compound.
100 90 80 70 W 60 50 % Transmission 40 30 - 923 1677 1285 20 - 702 10 0 4000 3500 3000 2500 2000 1500 1000 Wavenumber (cm) 100 80 m % Transmission 1660 1209 1438 886 757 0 4000 3500 3000 2500 1500 1000 2000 Wavenumber (cm*')
Use the 'H NMR and IR spectra given below to identify the structures of two isomers (A and B) having the molecular formula C4H,02. Part 1 out of 2 Compound A: 1H NMR of A 2 H 2 H 1H 7 6 2 0 ppm 100 IR [A] 50 0 4000 3500 3000 2500 2000 1500 1000 500
Use the 'H NMR and IR spectra given below to identify the structures of two isomers (A and B) having the molecular...
Options (select all that apply):
amine (N-H)
alcohol (O-H)
carboxylic acid (O=C-O-H)
carbonyl (C=O)
unsaturation (C=C or aromatic group)
The
blurry numbers at the bottom starting at the right and going left
are: 1000, 1500, 2000, 3000, 4000.
Starting from the bottom going up, the numbers are: 0, 50,
100.
Sorry, this is the best I can get unfortunately.
In the infrared (IR) spectrum below, which functional groups are indicated to be present? Select all that apply. M 000 3000...
IV. On each the following IR spectra, circle and indicate the most important stretching signals from the following choices:N-H, O-H, CEN, CHC, C-O, C-O,(3 points each, 6 points total) Top, IR spectrum of Compound 23a: CH1z0; Bottom, IR Spectrum of Compound 23: CH10 LO Lood wn Transmitance 0.00 3750 1500 100 2750 2500 1750 1500 0 2250 2000 Wavenumbers com-1) 10 08 00 Transmitance 1500 4500 1500 1500 1000 3000 2500 Wave numbers (cm-1)
Camphor
Analyze any given IR and/or NMR data below.
Identify functional groups in IR spectra
Identify proton locations from the H NMR.
DL- Camphor INFRARED SPECTRUM Transmitance 4000 3000 2000 Wavenumber (cm-1) 1000 Borneol INFRARED SPECTRUM 0 Relative Transmittance 0.2 UUUUUUUUUU J 3000 1000 2000 Wavenumber (cm-1) ca 00549 in CDC13, position 203 ZGCPPR (zgcpor) [rell 15 TT 3.0 1.5 1.0 Ippm]
Using one of the plots of IR transmission shown below, calculate
the bond strength of the C-O double bond (HINT: treat the
complicated molecule as a diatomic one, with everything other than
the O lumped into a single “atom”). Explain why the frequencies
could be different for the two different molecules shown.
C-H fingerprint region 40 0 1709 1716 3500 3000 2000 1500 1000 1500 Wavenumber (cm Wavenumber (cm')
C-H fingerprint region 40 0 1709 1716 3500 3000 2000 1500...
IR Unknown #17 THASHETTANCE 4000 3000 2000 1500 HRVENUMBER 1000 01.0 100 2881.98 559.20 2935.81 C- H 2969.02 stretch 1371.74 1255.611 1095.02 1027.65 %T 1183.88C-o stretch 1736.78 C=0 stretch 82 80.77 4000,0 3000 2000 1500 1000 550.0 cm-1 c:\pel_data spectra nguyen.sp - Unknown #17 TUU UL 1014UI LE Stretch aromatic Unknown Number #17 1. For your IR unknown, make a list of the most important absorbance bands and identity the bond producing each absorbance (i.e. 1650 cm-1, C=C stretch). 2....