Homework Answers
from IR spectra, 2950 cm-1 - (C-H , SP3 ,stretch)
1715 (alkyl ketone group )
C13 NMR shows presence of 5 different C with 5 different peaks.
above 200 peak in c13 is possible for RCHO, RCONR2, RCOOH, RCOR
its sure from IR that compound is not RCONR2 OR RCOOH . no charecteristic peaks are found in IR,but if there is CHO then there is a presence of sp2 CH stretch that is not on IR data, so it has to be a keton and it should be unsymetric to have 5 diffrent Carbons
CH3 - CH2 -CH2- CO CH3
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The data below was collected on an unknown. Use the data to propose a structure for...
Problem 9.35i Propose a structure that is consistent with the set of 1H NMR data. IR...
Problem 9.35i Propose a structure that is consistent with the set of 1H NMR data. IR data is also provided. C4H803 d (ppm) Splitting Integration 1.27 t ЗН 3.66 9 2H 4.13 S 2H 10.95 S 2500-3550 cm-1 (broad) 1715 cm-1 (strong) Edit
Provide the correct structure for your unknown based on the spectroscopic data provided. Provide the correct...
Provide the correct structure for your unknown based on the
spectroscopic data provided. Provide the correct name for your
compound. Either the IUPAC name, or a commonly accepted name (i.e.,
ethyl acetate in place of ethyl ethanoate) will be accepted.IR
spectrum: Assign as many peaks as possible. In particular, you
should assign peaks that were important in making your structural
interpretation (i.e. functional group peaks such as OH, C=O, N-H,
etc.).
1H-NMR spectrum: Assign all the peaks in the spectrum...
Please explain Propose a suitable structure that is consistent with the spectroscopic data given below. Explain what...
Please explain
Propose a suitable structure that is consistent with the spectroscopic data given below. Explain what each piece of data tells you about the molecule's structure. [10 point Draw you proposed structure here: Mass spec data m/z 208, 210 (1:1) strong absorbance @ 1700 cm IR Data doublet, 6H H NMR triplet, 3H triplet, 1H pentet, 2H septet, 1H 2 5 PPM 13C NMR 2 carbons 40 180 120 100 PPM 160 140 80 60 20 0
Draw the skeletal structure of the unknown compound Information: Each spectra below was obtained from a...
Draw the skeletal structure of the unknown compound
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm 'H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (J-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is...
Propose a structure that is consistent with the spectral data below. (The spectra and data provided...
Propose a structure that is consistent with the spectral data below. (The spectra and data provided were obtained from a pure organic molecule. For 'H NMR spectra, the integral is given in number of hydrogens (#H) or as a relative ratio.) Mass Spectrum (not shown): [M] = 162 m/z (100%) IR Spectrum (not shown): 3022, 2980, 1685, 1600, 1510 cm (all listed are strong (s) unless otherwise indicated) 'H NMR Spectrum (300 MHz, DMSO, 25 °C) dd (J= 2 Hz)...
Need help with number 1. Thanks. An unknown compound has the molecular formula C_5H_10O_2. Its^1H NMR...
Need help with number 1. Thanks.
An unknown compound has the molecular formula C_5H_10O_2. Its^1H NMR spectrum is shown below (integral values are shown below each peak). Its IR spectrum shows a strong peak at 1740 cm^-1. Determine its structure and assign all peaks on the NMR spectrum.^1H NMR (300 MHz, in CDCl_3) An unknown compound has the molecular formula C_9H_10O. Its^1H NMR is shown below (integral values are shown next to each peak). Its IR spectrum shows a strong...
Draw the Skeletal Structure of the Unknown Compound, with NMR given below. Information: Each spectra below was obtaine...
Draw the Skeletal Structure of the Unknown Compound, with NMR
given below.
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm "H NMR Spectra, the integral is given in number of hydrogens #H) or as a relative ratio. Important coupling constants U-values) are listed next to the peaks for some examples. For some spectra, an...
The infrared spectrum of an unknown compound with molecular formula C6H12O shows a strong, sharp peak...
The infrared spectrum of an unknown compound with molecular formula C6H12O shows a strong, sharp peak at 1724 cm-1. From this and H-NMR spectrum shown below, deduce the structure of this compound.
Draw the Skeletal Structure of the Unknown Compound, with NMR given below Information: Each spectra belaw...
Draw the Skeletal Structure of the Unknown Compound, with NMR
given below
Information: Each spectra belaw was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong is) unless otherwise indicated for signals above 1500 cm 'H NMR Spectra, the integral is given in number of hydrogens (WH) or as a relative ratio. Important coupling constants (-values) are listed next to the peaks for some examples. For some spectra, an...
5) Provide a structure consistent with all of the data for the following compounds. Unless otherwise...
5) Provide a structure consistent with all of the data for the following compounds. Unless otherwise stated, the IR data is not all inclusive, i.e. you may propose a structure which would include peaks not specifically noted but your structure must account for the peaks which are listed or which are excluded. a) Compound Q (C6H100) decolorizes Br2/CC14. IR peaks at 3500 cm- and 1640 cm"! NO absorption between 1700 and 1800 cm? b) Compound K (C6H100) does not decolorize...
Problem 9.35i Propose a structure that is consistent with the set of 1H NMR data. IR data is also provided. C4H803 d (ppm) Splitting Integration 1.27 t ЗН 3.66 9 2H 4.13 S 2H 10.95 S 2500-3550 cm-1 (broad) 1715 cm-1 (strong) Edit
Provide the correct structure for your unknown based on the
spectroscopic data provided. Provide the correct name for your
compound. Either the IUPAC name, or a commonly accepted name (i.e.,
ethyl acetate in place of ethyl ethanoate) will be accepted.IR
spectrum: Assign as many peaks as possible. In particular, you
should assign peaks that were important in making your structural
interpretation (i.e. functional group peaks such as OH, C=O, N-H,
etc.).
1H-NMR spectrum: Assign all the peaks in the spectrum...
Please explain
Propose a suitable structure that is consistent with the spectroscopic data given below. Explain what each piece of data tells you about the molecule's structure. [10 point Draw you proposed structure here: Mass spec data m/z 208, 210 (1:1) strong absorbance @ 1700 cm IR Data doublet, 6H H NMR triplet, 3H triplet, 1H pentet, 2H septet, 1H 2 5 PPM 13C NMR 2 carbons 40 180 120 100 PPM 160 140 80 60 20 0
Draw the skeletal structure of the unknown compound
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm 'H NMR Spectra, the integral is given in number of hydrogens (#H) or as a relative ratio. Important coupling constants (J-values) are listed next to the peaks for some examples. For some spectra, an inset (grey box) is...
Propose a structure that is consistent with the spectral data below. (The spectra and data provided were obtained from a pure organic molecule. For 'H NMR spectra, the integral is given in number of hydrogens (#H) or as a relative ratio.) Mass Spectrum (not shown): [M] = 162 m/z (100%) IR Spectrum (not shown): 3022, 2980, 1685, 1600, 1510 cm (all listed are strong (s) unless otherwise indicated) 'H NMR Spectrum (300 MHz, DMSO, 25 °C) dd (J= 2 Hz)...
Need help with number 1. Thanks.
An unknown compound has the molecular formula C_5H_10O_2. Its^1H NMR spectrum is shown below (integral values are shown below each peak). Its IR spectrum shows a strong peak at 1740 cm^-1. Determine its structure and assign all peaks on the NMR spectrum.^1H NMR (300 MHz, in CDCl_3) An unknown compound has the molecular formula C_9H_10O. Its^1H NMR is shown below (integral values are shown next to each peak). Its IR spectrum shows a strong...
Draw the Skeletal Structure of the Unknown Compound, with NMR
given below.
Information: Each spectra below was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong (s) unless otherwise indicated for signals above 1500 cm "H NMR Spectra, the integral is given in number of hydrogens #H) or as a relative ratio. Important coupling constants U-values) are listed next to the peaks for some examples. For some spectra, an...
The infrared spectrum of an unknown compound with molecular formula C6H12O shows a strong, sharp peak at 1724 cm-1. From this and H-NMR spectrum shown below, deduce the structure of this compound.
Draw the Skeletal Structure of the Unknown Compound, with NMR
given below
Information: Each spectra belaw was obtained from a pure compound. Mass Spectrum parent peaks (M) are listed for all examples. IR peaks listed are strong is) unless otherwise indicated for signals above 1500 cm 'H NMR Spectra, the integral is given in number of hydrogens (WH) or as a relative ratio. Important coupling constants (-values) are listed next to the peaks for some examples. For some spectra, an...
5) Provide a structure consistent with all of the data for the following compounds. Unless otherwise stated, the IR data is not all inclusive, i.e. you may propose a structure which would include peaks not specifically noted but your structure must account for the peaks which are listed or which are excluded. a) Compound Q (C6H100) decolorizes Br2/CC14. IR peaks at 3500 cm- and 1640 cm"! NO absorption between 1700 and 1800 cm? b) Compound K (C6H100) does not decolorize...
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