What is the molecular formula and structure? Use the mass,
infrared, proton NMR, and carbon NMR. I have a structure and
formula completed, but I wanted to confirm. 
Homework Answers
IR spectra : between 1700-1760 cm-1 there seems to be two overlapped strong peaks corresponding to carbonyl ( -C=O) group , one is keto group and other might be an ester. - 3000-2900cm-1 peak due to sp3C-H stretching.
Mass spectra : Molar mass : 116 m/z ; base peak
at m/z : 43 ==> using IR we acn predict it is due to
CH3-C
O+:
species.
using IR and MS : Molecular formula : C5H8O3.
1H-NMR : relative integration ratio : 3:2:3 ==> 2.2 ppm ( singlet ,3H ) , 3.4 ppm ( S, 2H ) and 3.7 ppm ( S, 3H). ( peak at 4.9 ppm and others might be due to keto-enol tautomerism )
13C-NMR : total 5 non-equivalnet C : 202 ppm ( keto - ) , 168 ppm (ester carbonyl) , 30,49 and 52 ppm ( sp3 C)
Most probable Molecular structure : CH3-(C=O)-CH2-(C=O)-OCH3. Methyl acetoacetate.
Add Answer to:
What is the molecular formula and structure? Use the mass,
infrared, proton NMR, and carbon NMR....
Use the spectra below to determine the molecular formula and chemical structure of the unknown compound....
Use the spectra below to determine the molecular formula and
chemical structure of the unknown compound.
MASS 142 % of Base Peak 1147 40 50 70 80 5 100 % Transmittance Jari- 3000 1000 4000 'H NMR 300 MERE 2000 Wavenumber (cm) 3.0 25 20 15 Ppm 4.0 3.5 C/DEPT NMR 75.5 MHz ppm 60 50 40 80 70 90 100 110 120 170 160 150 140 130 ppm 4.5 4.0 3.5 3.0 2.5 2.0 1.5 ppm COSY 300 MHz...
Determine the structure of the compound using the Mass Spec, IR, C NMR, H NMR, and...
Determine the structure of the compound using the Mass Spec, IR,
C NMR, H NMR, and Dept experiments .
Splitting pattern from left to right is as follows: triplet, 6,
5, 6, triplet
Compound 3 MS: M* = 81 Relative Intensity 10 20 30 40 70 80 90 50 60 m/z Microsoft Autog LOD TRANSMETTANCE1% 4000 2000 2000 1500 1000 HAVENUHBERI-1 1H NMR + ) PPM | 13C NMR 90 ' 80 ' 70 ' 60 ' 50 ' 40...
Propose a reasonable structure for this compound based on the mass spec, IR, and NMR data....
Propose a reasonable structure for this compound based on the mass spec, IR, and NMR data. 100 Relative Intensity M+ 10 20 30 40 60 70 80 90 50 m/z LUU TRINETTRICET 4000 3000 2000 cm1 1500 1000 500 ЗН Зн 2H тттттттттттттттттт 11 10 9 8 7 6 5 4 ppm 200 180 160 140 120 80 60 40 20 100 ppm
molecule is C11H14O. I need the most help with UOU, what could be present based on the molecular formula, etc. H NMR Spctrum 1ず Molecular Formula· c.:Ha«O Infrared Spectrum Compound 'B Molecular...
molecule is C11H14O. I need
the most help with UOU, what could be present based on the
molecular formula, etc.
H NMR Spctrum 1ず Molecular Formula· c.:Ha«O Infrared Spectrum Compound 'B Molecular Formula CaHi0 3C NMR Spectrum Molecular Formula: CaH. 11 10 9 8 7 2 4 ppm 6H Molecular Formula known to be C11H140 Instructions: 1. 2. UOU and MF analysis: show how the uou value reinforces proposed structure 3. Infrared spectrum- what signals confirm functional groups & what...
6) Use the provided NMR and IR Information to identify a compound with molecular formula CHNO....
6) Use the provided NMR and IR Information to identify a compound with molecular formula CHNO. (20 points) PPM w 3 M EN 180 180 140 120 100 POPIM 80 00 40 220 2 을은 IM 1000 19900 200 not 6) Use the provided NMR and IR information to identify a compound with molecular formula CH19NO2. (20 points) 6 ili 5 PPM لر AA Au لللب H 180 160 140 120 100 PPM 80 60 40 20 26 을은 100...
Using Mass Spec, IR, H-NMR, and C-NMR what would the structure look like? Relative Intensity 10...
Using Mass Spec, IR, H-NMR, and C-NMR what would the structure look
like?
Relative Intensity 10 20 30 40 50 60 70 80 90 TERNSMETTANCEI D 4000 NAVENUMBERI 'H NMR PPM 13C NMR 90 80 70 60 50 40 30 20 10 0 PPM PPM DEPT-90 positive DEPT-135 positive Negative Negative Negative Negative Positive
A compound with molecular formula C11H140 displays the following IR, 1H NMR and 13C NMR spectra....
A compound with molecular formula C11H140 displays the following IR, 1H NMR and 13C NMR spectra. Propose a structure for this compound. Ppin 220.200.180.160.140 120 PPM 100 80 60 40 20
28. A compound with the molecular formula of C3H.ON shows 1H NMR and 13C NMR as...
28. A compound with the molecular formula of C3H.ON shows 1H NMR and 13C NMR as below. Give the most plausible structure in the box. 2H, 3 peaks 2H, 3 peaks 1H, 1 peak PPM 180 160 140 120 100 80 60 40 20 PPM
1. What is the chemical formula of the unknown? 2. what is the mass of the...
1. What is the chemical formula of the unknown?
2. what is the mass of the unknown?
3. What is the HDI?
4. According to IR spectra, what functional groups are
present?
5. What is the structure of the molecule?
138 PRACTICAL SPECTROSCOPY Compound 80 is a liquid (boiling point 212 C), that can be prepared by the reaction of Compound 79 with acidic, anhydrous ethanol. The Mass, IR, and 'H NMR spectra, along with C NMR data, are given...
Propose a reasonable structure based on the molecular formula, the 1H NMR, and the proton–decoupled 13C...
Propose a reasonable structure based on the molecular formula,
the 1H NMR, and the proton–decoupled 13C NMR data below. The
unknown compound has a molecular formula of C7H16O and * = CH2 by
DEPT.
Propose a reasonable structure based on the molecular formula, the 'H NMR, and the proton-decoupled 13C NMR data below. The unknown compound has a molecular formula of C7H160 and * = CH2 by DEPT. 'H NMR 3H 8H 13C NMR 2H (CH3)4 Si 26 VIH them...
Use the spectra below to determine the molecular formula and
chemical structure of the unknown compound.
MASS 142 % of Base Peak 1147 40 50 70 80 5 100 % Transmittance Jari- 3000 1000 4000 'H NMR 300 MERE 2000 Wavenumber (cm) 3.0 25 20 15 Ppm 4.0 3.5 C/DEPT NMR 75.5 MHz ppm 60 50 40 80 70 90 100 110 120 170 160 150 140 130 ppm 4.5 4.0 3.5 3.0 2.5 2.0 1.5 ppm COSY 300 MHz...
Determine the structure of the compound using the Mass Spec, IR,
C NMR, H NMR, and Dept experiments .
Splitting pattern from left to right is as follows: triplet, 6,
5, 6, triplet
Compound 3 MS: M* = 81 Relative Intensity 10 20 30 40 70 80 90 50 60 m/z Microsoft Autog LOD TRANSMETTANCE1% 4000 2000 2000 1500 1000 HAVENUHBERI-1 1H NMR + ) PPM | 13C NMR 90 ' 80 ' 70 ' 60 ' 50 ' 40...
Propose a reasonable structure for this compound based on the mass spec, IR, and NMR data. 100 Relative Intensity M+ 10 20 30 40 60 70 80 90 50 m/z LUU TRINETTRICET 4000 3000 2000 cm1 1500 1000 500 ЗН Зн 2H тттттттттттттттттт 11 10 9 8 7 6 5 4 ppm 200 180 160 140 120 80 60 40 20 100 ppm
molecule is C11H14O. I need
the most help with UOU, what could be present based on the
molecular formula, etc.
H NMR Spctrum 1ず Molecular Formula· c.:Ha«O Infrared Spectrum Compound 'B Molecular Formula CaHi0 3C NMR Spectrum Molecular Formula: CaH. 11 10 9 8 7 2 4 ppm 6H Molecular Formula known to be C11H140 Instructions: 1. 2. UOU and MF analysis: show how the uou value reinforces proposed structure 3. Infrared spectrum- what signals confirm functional groups & what...
6) Use the provided NMR and IR Information to identify a compound with molecular formula CHNO. (20 points) PPM w 3 M EN 180 180 140 120 100 POPIM 80 00 40 220 2 을은 IM 1000 19900 200 not 6) Use the provided NMR and IR information to identify a compound with molecular formula CH19NO2. (20 points) 6 ili 5 PPM لر AA Au لللب H 180 160 140 120 100 PPM 80 60 40 20 26 을은 100...
Using Mass Spec, IR, H-NMR, and C-NMR what would the structure look
like?
Relative Intensity 10 20 30 40 50 60 70 80 90 TERNSMETTANCEI D 4000 NAVENUMBERI 'H NMR PPM 13C NMR 90 80 70 60 50 40 30 20 10 0 PPM PPM DEPT-90 positive DEPT-135 positive Negative Negative Negative Negative Positive
A compound with molecular formula C11H140 displays the following IR, 1H NMR and 13C NMR spectra. Propose a structure for this compound. Ppin 220.200.180.160.140 120 PPM 100 80 60 40 20
28. A compound with the molecular formula of C3H.ON shows 1H NMR and 13C NMR as below. Give the most plausible structure in the box. 2H, 3 peaks 2H, 3 peaks 1H, 1 peak PPM 180 160 140 120 100 80 60 40 20 PPM
1. What is the chemical formula of the unknown?
2. what is the mass of the unknown?
3. What is the HDI?
4. According to IR spectra, what functional groups are
present?
5. What is the structure of the molecule?
138 PRACTICAL SPECTROSCOPY Compound 80 is a liquid (boiling point 212 C), that can be prepared by the reaction of Compound 79 with acidic, anhydrous ethanol. The Mass, IR, and 'H NMR spectra, along with C NMR data, are given...
Propose a reasonable structure based on the molecular formula,
the 1H NMR, and the proton–decoupled 13C NMR data below. The
unknown compound has a molecular formula of C7H16O and * = CH2 by
DEPT.
Propose a reasonable structure based on the molecular formula, the 'H NMR, and the proton-decoupled 13C NMR data below. The unknown compound has a molecular formula of C7H160 and * = CH2 by DEPT. 'H NMR 3H 8H 13C NMR 2H (CH3)4 Si 26 VIH them...
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