Homework Answers
1.) a By comparing the shifts of acetylene group(2100-2200cm-1) and that of the nitrile group (2220-2260cm-1) given compounds can be differentiated.
b.) benzyl alcohol will give a broad characteristic peak of O-H stretch around 3200-3400cm-1 while acetophenone will give the carbonyl stretch around 1735-1750cm-1.
c.) Given compounds can be differentiated on the basis of N-H stretch. First compound give the broad N-H stretch around 3300-3500cm-1 while the second compound having tertiary amine do not have this peak.
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Can someone please solve these problems for me. -- -- ---- U13 (DY W eru Ulla) 1. Describe how IR spectroscopy...
can somebody please help me identify these to what it is asking. thank you. 3. The...
can somebody please help me identify these to what it is
asking. thank you.
3. The infrared spectra of four of the following compounds are shown below. For each compound, determine which structure it represents. (12 pt) CH,CH,CH,CH,NHCH,CH.CH,CH,CENCH.CH.CH-N-CH2CH2CH3 А) (c) CH-CH-CH3 B CH,CHCH.CH -^—CH CH CH CH, CH3CH2CH2CH2– CH,CH,CHCH2 NCH © CHE 0.6 0.4 3000 2000 Wavenumber(cm-1) 1000 波数/cm 3. (continued) 0.9 0.81 Relative Transmittance 4000 3000 1000 2000 Wavenumber (cm-1) t/cm2
2. The following IR spectra each include the structure of the corresponding compound directly on the...
2. The following IR spectra each include the structure of the corresponding compound directly on the spectrum (continued on following pages). • Based on the given structures and the information provided in Tables 8.1 and 8.2, assign as many of the major absorptions as possible directly on the spectra o indicating what type of bond O and whether it corresponds to bending or a stretching vibration. Transmittance (%) 0 + 4000 3600 3200 2000 2400 1400 1200 1000 800 600...
H H Ci Ci H CH CH2 CH3 H CH3 CH3 To check if she got right product, Mary measured IR spectra of reactants and her pr...
H H Ci Ci H CH CH2 CH3 H CH3 CH3 To check if she got right product, Mary measured IR spectra of reactants and her product, but did not label spectra. Which of the following IR spectra belongs to propanol, acetic acid and propyl acetate? 8) TRANSMITTANCE 0.0 4000 1000 3000 1000 3000 2000 Wavenumber (cm-1) 1000 2000 Wavenumber (cm-1) 2000 Wavenumber (cm-1) -OH OH B) Acetic acid A) Propanol C) Propyl acetatete
An unknown compound with the molecular formula C H N produces the following IR spectrum. Wha...
An unknown compound with the molecular formula C H N produces the following IR spectrum. Wha most likely identity of the unknown compound? 100 mo 50 TRANSMITTANCE [%] 4000 3000 1000 500 2000 1500 WAVENUMBER (-1) NH NI NH2 NH2 III IV
2) Which is the most reasonable structure for a compound with this IR spectrum? Wavelength, (um)...
2) Which is the most reasonable structure for a compound with this IR spectrum? Wavelength, (um) 2.2 2.4 2.6 3 3,5 4 4,5 5 5,5 6 1 8_9 10 11 12 13 14 16 MAN 4600 4000 3500 3000 2500 2000 1500 Wavenumber, (cm) 1000 800 600 (A) (B) ОН CH3(CH2)4-C=C-COCH; CH(CH2)3-C=C-CHCH (C) (D) H-C=C-(CH2)4CCH3 CH3(CH2)4-CH=CH-CH 3) Which structure is consistent with following IR spectrum? * 2.527 3 Wavelength, (um) 3,5 4 4,5 5 5,5 6 6,5 7 8 9...
Which compound is consistent with the following IR spectrum? LOO % Transmittance 100 3000 1000 SOO...
Which compound is consistent with the following IR spectrum? LOO % Transmittance 100 3000 1000 SOO 2000 1500 Wavenumber (cm) HN NH2 NH2 a) b) c) d)
IR Worksheet 1. For each spectrum below: 1) Label the major peaks with their approximate frequency....
IR Worksheet 1. For each spectrum below: 1) Label the major peaks with their approximate frequency. 2) Identify the bond vibration and possible functional group associated with each peak. 3) Match the spectra to one of these possible compounds: NH2 TRANSMITTANCE[%] pobo edo "2060 bo zdoo 160 Tobo 560 WAVENUMBER [cm-1] oot 08 TRANSMITTANCE [%] 09 01 02 4000 3500 3000 2500 2000 WAVENUMBER (cm-1] 1500 1000 500 οοο TRANSMITTANCE (6) οο οο οε 4000 3500 3000 1500 1000 2500...
The compound from the following list that exhibits the infrared spectrum below is (Use your cursor...
The compound from the following list that exhibits the infrared spectrum below is (Use your cursor to read the IR frequency scale.) CH CH(CH)CH CH,(CH,A-C=C-H HỌ–CH, Flash Installation and Troubleshooting Infrared spectra provided courtesy of Thermo Electron Corp. 110% Transmittance Wavenumber: 4000 3500 3000 2500 2000 Wavenumber (cm) 1500 1000 450 [References] Review Topics] The compound from the following list that exhibits the infrared spectrum below is (Use your cursor to read the IR frequency scale.) сн. H-C=C-C-CH, HOCH, CH...
4) Which structure is consistent with this IR spectrum? 2.5 27 3 3,5 Wavelength, (um) 4...
4) Which structure is consistent with this IR spectrum? 2.5 27 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10 12 14 18 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm) (A) (B) CH3(CH2).CH OCCH; CHCH).CH_OČCH, B) ChọCh> OH CH(CH2) 10COH (C) CHCH_CHE (D) HOCH_CH»ČCH, 5) Which compound corresponds to this IR spectrum? 1 2.527 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10...
Problem 1 Directions: Determine the funcional group(s) present in the IR spectrum. 1a. 1b. 1c. Thank...
Problem 1
Directions: Determine the funcional group(s) present in the IR
spectrum.
1a.
1b. 1c.
Thank you in advance!
INFRARED SPECTRUM 0.8 TRANSMITTANCE 3000 1000 2000 Wavenumber (cm-1) C7H14 note that this band is greater than 3000 1644 % Transmittance 2863 2966 4000 2000 Wavenumbers (cm-1) Wavenumber (cm-1) C3H60 2725 2827 % Transmittance 2976 1731 2000 Wavenumbers (cm-1)
can somebody please help me identify these to what it is
asking. thank you.
3. The infrared spectra of four of the following compounds are shown below. For each compound, determine which structure it represents. (12 pt) CH,CH,CH,CH,NHCH,CH.CH,CH,CENCH.CH.CH-N-CH2CH2CH3 А) (c) CH-CH-CH3 B CH,CHCH.CH -^—CH CH CH CH, CH3CH2CH2CH2– CH,CH,CHCH2 NCH © CHE 0.6 0.4 3000 2000 Wavenumber(cm-1) 1000 波数/cm 3. (continued) 0.9 0.81 Relative Transmittance 4000 3000 1000 2000 Wavenumber (cm-1) t/cm2
2. The following IR spectra each include the structure of the corresponding compound directly on the spectrum (continued on following pages). • Based on the given structures and the information provided in Tables 8.1 and 8.2, assign as many of the major absorptions as possible directly on the spectra o indicating what type of bond O and whether it corresponds to bending or a stretching vibration. Transmittance (%) 0 + 4000 3600 3200 2000 2400 1400 1200 1000 800 600...
H H Ci Ci H CH CH2 CH3 H CH3 CH3 To check if she got right product, Mary measured IR spectra of reactants and her product, but did not label spectra. Which of the following IR spectra belongs to propanol, acetic acid and propyl acetate? 8) TRANSMITTANCE 0.0 4000 1000 3000 1000 3000 2000 Wavenumber (cm-1) 1000 2000 Wavenumber (cm-1) 2000 Wavenumber (cm-1) -OH OH B) Acetic acid A) Propanol C) Propyl acetatete
An unknown compound with the molecular formula C H N produces the following IR spectrum. Wha most likely identity of the unknown compound? 100 mo 50 TRANSMITTANCE [%] 4000 3000 1000 500 2000 1500 WAVENUMBER (-1) NH NI NH2 NH2 III IV
2) Which is the most reasonable structure for a compound with this IR spectrum? Wavelength, (um) 2.2 2.4 2.6 3 3,5 4 4,5 5 5,5 6 1 8_9 10 11 12 13 14 16 MAN 4600 4000 3500 3000 2500 2000 1500 Wavenumber, (cm) 1000 800 600 (A) (B) ОН CH3(CH2)4-C=C-COCH; CH(CH2)3-C=C-CHCH (C) (D) H-C=C-(CH2)4CCH3 CH3(CH2)4-CH=CH-CH 3) Which structure is consistent with following IR spectrum? * 2.527 3 Wavelength, (um) 3,5 4 4,5 5 5,5 6 6,5 7 8 9...
Which compound is consistent with the following IR spectrum? LOO % Transmittance 100 3000 1000 SOO 2000 1500 Wavenumber (cm) HN NH2 NH2 a) b) c) d)
IR Worksheet 1. For each spectrum below: 1) Label the major peaks with their approximate frequency. 2) Identify the bond vibration and possible functional group associated with each peak. 3) Match the spectra to one of these possible compounds: NH2 TRANSMITTANCE[%] pobo edo "2060 bo zdoo 160 Tobo 560 WAVENUMBER [cm-1] oot 08 TRANSMITTANCE [%] 09 01 02 4000 3500 3000 2500 2000 WAVENUMBER (cm-1] 1500 1000 500 οοο TRANSMITTANCE (6) οο οο οε 4000 3500 3000 1500 1000 2500...
The compound from the following list that exhibits the infrared spectrum below is (Use your cursor to read the IR frequency scale.) CH CH(CH)CH CH,(CH,A-C=C-H HỌ–CH, Flash Installation and Troubleshooting Infrared spectra provided courtesy of Thermo Electron Corp. 110% Transmittance Wavenumber: 4000 3500 3000 2500 2000 Wavenumber (cm) 1500 1000 450 [References] Review Topics] The compound from the following list that exhibits the infrared spectrum below is (Use your cursor to read the IR frequency scale.) сн. H-C=C-C-CH, HOCH, CH...
4) Which structure is consistent with this IR spectrum? 2.5 27 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10 12 14 18 4000 3500 3000 2500 2000 1800 1600 1400 12001000 800 600 400 Wavenumber, (cm) (A) (B) CH3(CH2).CH OCCH; CHCH).CH_OČCH, B) ChọCh> OH CH(CH2) 10COH (C) CHCH_CHE (D) HOCH_CH»ČCH, 5) Which compound corresponds to this IR spectrum? 1 2.527 3 3,5 Wavelength, (um) 4 4,5 5 5,5 6 6,5 7 8 9 10...
Problem 1
Directions: Determine the funcional group(s) present in the IR
spectrum.
1a.
1b. 1c.
Thank you in advance!
INFRARED SPECTRUM 0.8 TRANSMITTANCE 3000 1000 2000 Wavenumber (cm-1) C7H14 note that this band is greater than 3000 1644 % Transmittance 2863 2966 4000 2000 Wavenumbers (cm-1) Wavenumber (cm-1) C3H60 2725 2827 % Transmittance 2976 1731 2000 Wavenumbers (cm-1)
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