an organic unknown Z has MS data:M/Z = 71
and IR absorption bands at 3200-3600 and 2263cm-1
and 1H NMR data: 2.5 ppm, triplet (2H); 3.1 ppm singlet (1H) and
3.8 ppm, tripled (2H); which structures most closely match this
data?
Homework Answers
Add Answer to:
an organic unknown Z has MS data:M/Z = 71
and IR absorption bands at 3200-3600 and...
Using the NMR, IR, and MS figure out what the compoud is. ** identify the molecular...
Using the NMR, IR, and MS figure out what the compoud is.
**
identify the molecular structure througu NMR, IR and MS
CHEM 100L Lab 3 NMR Problems Unknown 1 CH 0 M-a 102 Relative Intensity 20 30 40 50 70 80 60 m/z water, not part of sample 1-2975-2877 9H, singlet 2H, 3H, quartet triplet ppm Unknown 2 C,H,O tensity 119 Relative 3200-2600 1680V 3H, singlet 2x 2H, doublet 1H, singlet ppm Unknown 3 C,HO, Relative Intensity 3090 3035...
Having trouble figuring out these two unknown compounds. 17) Formula: C8H10O with a strong peak a...
Having trouble figuring out
these two unknown compounds. 17) Formula: C8H10O with a strong peak
at 3200 cm^-1
18) Formula: C10H13Br I just need to know the structures of each
of them if you could please help me out!
17) Chemical Formulac: CHroO IR: strong broad peak at 3200 cm-1 Singlet, 3 Triplet, 1H Singlet, 2hH Doublet, 1H Singlet, 1H Singlet, 1H Doublet, 1H 0 2 6 PPM 18) Chemical Formula: C10H13Br Doublet, 3H Doublet, 2H Triplet, 3hH Quartet, 2H...
just the circled ones only 8.10 Suggest structures consistent with the following 'H NMR data: a....
just the circled ones only
8.10 Suggest structures consistent with the following 'H NMR data: a. Сно triplet (1.0 ppm, 3H) singlet (2.1 ppm, 3H) quartet (2.4 ppm, 2H) b. С Н.о, triplet (1.2 ppm, 3H) singlet (2.1 ppm, 3H) quartet (4.1 ppm, 2H) усно singlet (2.4 ppm, 3H) multiplet (7.5 ppm, 5H) singlet (1.6 ppm, 6H) singlet (3.1 ppm, 2H) multiplet (7.3 ppm, 5H) 1. Сно, triplet (1.2 ppm, 3H) singlet (2.4 ppm, 3H quartet (4.2 ppm, 2H) ....
Could anybody help me answer the selected questions? 8.8 Identify the compounds of the given molecular...
Could anybody help me answer the selected questions?
8.8 Identify the compounds of the given molecular formulas that show a. One 'H NMR signal: CHO CH C.H.Br, b. Two 'H NMR signals: CH.CL CHO CHO, CHOCI 8.9 8.10 How many 'H NMR signals will each of the compounds below show? a. (CH, CHỊCH, d. CH.COCH,CH.COCH, b. CH,COCOOCH, e. CH.COCH.CH.COOCH, c. CH,COCH,COCH, L. CHCOCH CH(CI)COCH, Suggest structures consistent with the following 'H NMR data: а. Сно CHCI triplet (1.0 ppm, 3H)...
14. An unknown compound shows an intense IR absorption at 1710 cm- and gives the following...
14. An unknown compound shows an intense IR absorption at 1710 cm- and gives the following NMR spectrum: 8 1.1, doublet, 6Hs; 8 2.1, singlet, 3Hs; and 8 2.3-2.8, broad multiplet, 1H. Which structure is the compound? a) (CH3)2CHOCH3 с) CH:C-O)CH-CH-CH3 ect r b) CH3CH2CH2OCH3 d) (CH3)2CHC(O)CH3 15. This NMR spectrum corresponds to which compound? 2H 1H 1.7 ppm 1H O.5 1.5 1 2 2.5 3.5 4.5 4 5 бн (рpm) b) CH3CH2CH2CH2OH d) CH3CH2CH(OH)CH3 a) (CH3)3COH c) (CH)2СHCH,ОН 13
Provide the most likely chemical structure that corresponds to each set of spectral data (2.5 pts...
Provide the most likely chemical structure that corresponds to each set of spectral data (2.5 pts each). Please show your work, though: even if you do not arrive at the correct answer, you can earn partial credit. Formula: C6H12 IR: 2965 cm-1(strong), 3028 cm-1(medium) 1H NMR: 6H, triplet (1.0 ppm); 4H, quintet (1.8 ppm); 2H, triplet (5.4 ppm) 13C NMR: 22 ppm, 39 ppm, 125 ppm Formula: C6H12O IR: 2960 cm-1(strong), 2874 cm-1(medium), 1716 cm-1(strong, sharp) 1H NMR: 2H, doublet...
A compound of unknown structure gave the following spectroscopic data: Mass spectrum: M+ = 88.1 IR:...
A compound of unknown structure gave the following
spectroscopic data:
Mass spectrum: M+ = 88.1
IR: 3600cm-1
1H NMR: 1.4 (2H, quartet, J=7Hz); 1.2 (6H, singlet); 1.0 (1H,
singlet); 0.9 (3H, triplet, J=7Hz)
13C NMR: 74, 35, 27, 25
a. assuming that the compound contains C and H but may or may not
contain O, give three possible molecular formulas.
b. how many protons (H) does the compound contain?
c. what functional group(s) does the compound contain?
d. how many...
find IR/NMR structure. fill in the table. Problem A: A compound (A) has a molecular mass...
find IR/NMR structure. fill in the table.
Problem A: A compound (A) has a molecular mass 121. Use the rule of thirteen to calculate a base formula with only C & H. Then, find a molecular formula with C, H and N only. Calculate the DU of the above molecular formula and determine if it is a valid molecular formula. Use the following IR and 1HNMR data and determine the structural formula.. 1HNMR Singlet at 1.00 ppm, 2H Triplet at...
An unknown substance has the formula C6H12O2. The compound shows four singlets in the 1H NMR...
An unknown substance has the formula C6H12O2. The compound shows four singlets in the 1H NMR spectrum at 3.8 (1 H, s), 2.6 (2 H, s), 2.2 (3 H, s) and 1.3 (6 H, s) ppm, respectively. . The 3.8 ppm proton exchanges with deuterium upon addition of D2O. In the IR spectrum, a wide absorption in the range of 3600-3200 cm-1 and a more sharp absorption at 1703 cm-1 is seen, among other things. Write down the structure of...
29. The IR and 'H NMR spectra of Unknown B of molecular formula C,H,20, are given...
29. The IR and 'H NMR spectra of Unknown B of molecular formula C,H,20, are given on the next page. [10 points] a. How many degrees of unsaturation are present in Unknown B? b. What functional groups are suggested by the IR spectral data? c. How many protons correspond to each signal of the 'H NMR? d. What C-H bonding (or types of protons) are suggested by the 'H NMR data? e. Suggest a structure consistent with parts 29a-d above....
Using the NMR, IR, and MS figure out what the compoud is.
**
identify the molecular structure througu NMR, IR and MS
CHEM 100L Lab 3 NMR Problems Unknown 1 CH 0 M-a 102 Relative Intensity 20 30 40 50 70 80 60 m/z water, not part of sample 1-2975-2877 9H, singlet 2H, 3H, quartet triplet ppm Unknown 2 C,H,O tensity 119 Relative 3200-2600 1680V 3H, singlet 2x 2H, doublet 1H, singlet ppm Unknown 3 C,HO, Relative Intensity 3090 3035...
Having trouble figuring out
these two unknown compounds. 17) Formula: C8H10O with a strong peak
at 3200 cm^-1
18) Formula: C10H13Br I just need to know the structures of each
of them if you could please help me out!
17) Chemical Formulac: CHroO IR: strong broad peak at 3200 cm-1 Singlet, 3 Triplet, 1H Singlet, 2hH Doublet, 1H Singlet, 1H Singlet, 1H Doublet, 1H 0 2 6 PPM 18) Chemical Formula: C10H13Br Doublet, 3H Doublet, 2H Triplet, 3hH Quartet, 2H...
just the circled ones only
8.10 Suggest structures consistent with the following 'H NMR data: a. Сно triplet (1.0 ppm, 3H) singlet (2.1 ppm, 3H) quartet (2.4 ppm, 2H) b. С Н.о, triplet (1.2 ppm, 3H) singlet (2.1 ppm, 3H) quartet (4.1 ppm, 2H) усно singlet (2.4 ppm, 3H) multiplet (7.5 ppm, 5H) singlet (1.6 ppm, 6H) singlet (3.1 ppm, 2H) multiplet (7.3 ppm, 5H) 1. Сно, triplet (1.2 ppm, 3H) singlet (2.4 ppm, 3H quartet (4.2 ppm, 2H) ....
Could anybody help me answer the selected questions?
8.8 Identify the compounds of the given molecular formulas that show a. One 'H NMR signal: CHO CH C.H.Br, b. Two 'H NMR signals: CH.CL CHO CHO, CHOCI 8.9 8.10 How many 'H NMR signals will each of the compounds below show? a. (CH, CHỊCH, d. CH.COCH,CH.COCH, b. CH,COCOOCH, e. CH.COCH.CH.COOCH, c. CH,COCH,COCH, L. CHCOCH CH(CI)COCH, Suggest structures consistent with the following 'H NMR data: а. Сно CHCI triplet (1.0 ppm, 3H)...
14. An unknown compound shows an intense IR absorption at 1710 cm- and gives the following NMR spectrum: 8 1.1, doublet, 6Hs; 8 2.1, singlet, 3Hs; and 8 2.3-2.8, broad multiplet, 1H. Which structure is the compound? a) (CH3)2CHOCH3 с) CH:C-O)CH-CH-CH3 ect r b) CH3CH2CH2OCH3 d) (CH3)2CHC(O)CH3 15. This NMR spectrum corresponds to which compound? 2H 1H 1.7 ppm 1H O.5 1.5 1 2 2.5 3.5 4.5 4 5 бн (рpm) b) CH3CH2CH2CH2OH d) CH3CH2CH(OH)CH3 a) (CH3)3COH c) (CH)2СHCH,ОН 13
A compound of unknown structure gave the following
spectroscopic data:
Mass spectrum: M+ = 88.1
IR: 3600cm-1
1H NMR: 1.4 (2H, quartet, J=7Hz); 1.2 (6H, singlet); 1.0 (1H,
singlet); 0.9 (3H, triplet, J=7Hz)
13C NMR: 74, 35, 27, 25
a. assuming that the compound contains C and H but may or may not
contain O, give three possible molecular formulas.
b. how many protons (H) does the compound contain?
c. what functional group(s) does the compound contain?
d. how many...
find IR/NMR structure. fill in the table.
Problem A: A compound (A) has a molecular mass 121. Use the rule of thirteen to calculate a base formula with only C & H. Then, find a molecular formula with C, H and N only. Calculate the DU of the above molecular formula and determine if it is a valid molecular formula. Use the following IR and 1HNMR data and determine the structural formula.. 1HNMR Singlet at 1.00 ppm, 2H Triplet at...
29. The IR and 'H NMR spectra of Unknown B of molecular formula C,H,20, are given on the next page. [10 points] a. How many degrees of unsaturation are present in Unknown B? b. What functional groups are suggested by the IR spectral data? c. How many protons correspond to each signal of the 'H NMR? d. What C-H bonding (or types of protons) are suggested by the 'H NMR data? e. Suggest a structure consistent with parts 29a-d above....
Most questions answered within 3 hours.
-
For the reaction 1N2+3H2-----> 2NH3, would the reaction rate
trend be: delta[NH3]/ delta t = -2...
asked 31 minutes ago -
Within your current/past organization, identify a problem/issue
and format a design to address same. You may...
asked 13 minutes ago -
A sock stuck to the side of a clothes-dryer barrel has a
centripetal acceleration of 24...
asked 1 hour ago -
A perfect gas undergoes an isentropic process such that its
volume doubles. If the ratio of...
asked 1 hour ago -
list the elements in groups 3A to 6A in the same order as in the
periodic...
asked 1 hour ago -
Estimating effect size. Peng and Chen (2014)
evaluated effect size estimates for various tests. In their...
asked 1 hour ago -
Write a script in MySQL that creates and calls a stored
procedure name test. This procedure...
asked 1 hour ago -
If we test the following: H0: μ = 17
vs. H1: μ ≠ 17 and the...
asked 2 hours ago -
in the past year TVG had revenues of 3 million, cost
of goods sold of $25...
asked 2 hours ago -
4) In a polypeptide, which bond cannot rotate because of its
partial double bond character?
The...
asked 2 hours ago -
Assume that in the short run L = 1,000 and K = 100. 1. What is...
asked 2 hours ago -
At a given temperature, 2.06 atm of H2 and 3.7 atm of Br2 are
mixed and...
asked 2 hours ago