Since this is a hydrocarbon (only C and H) and degree of unsaturation is 1, this can either be an alkene or cycloheptane.
In case of alkene, the following peaks are observed:
(i).A medium peak at 3000-3100 cm-1 due to C-H stretch,
(ii).A medium to weak peak in the range 1650-1650 cm-1 due to C=C
But the above peaks are absent in the given IR spectrum. Hence this structure cannot be any one of the alkenes.
#4: Important peaks from IR spectrum:
(i). sp3 C-H stretch in the range 2850-2950 cm-1 indicates that all the carbons are sp3
(ii): sp3 C-H bending in the range 1350-1475 cm-1 due to all the sp3 carbons.
Since there is no peak for sp2 carbon, alkene is absent.
#5: None of them are absent.
#6: Since this is not an alkene and all the carbons are sp3, this must be cycloheptane or its structural isomers.
Hence the class of compound is cycloalkane.
#7: The most probable molecule is cycloheptane whose structure is given below:
Some of the structural isomers are shown below:
LOD 50 1500 1000 S00 3000 2000 4000 HAVENUMBERI- TANSHETTANCEI% Data Analysis: IR Spectra The below...
LOD 5D 3000 eo0D S00 1000 S0o HAVENUMBERI This IR spectrum is from which one of these three possibilities!? a: c: b: Spectra images are reproduced by permission from Sigma-Aldrich and the National Institute of Advanced Industrial Science and Technology (SDBSWeb: http:iriodbOl.ibase.aist.go.jp/sdbs,8/2605, 2/7/09, 2/13/093/009)
Unknown H415 100 50 1000 1S00 2000 3000 BRVENUMBERI 4000 Unknown H415 ЗН 1 H-N 2H, q 1H, d 5H, m 1H, d 0 1 2 3 6 7 8 10 11 ppm HSP-00-049 Unknown H415 q 140 120 100 200 180 160 ppm CDS-00-726 20 -40 60 80 Relative Intensity 09 Unknown H415 100 MS-NJ-0442 80 20 thmpt 25 50 75 100 125 150 175 m/z Date: Name: Section/Group: Instructor: Report Sheet: Laboratory 14 MS,IR, 13C NMR, and 'H...
Unknown C314 t00 D 4000 3000 2000 1500 1000 S00 WAVENUMBERI- 3604 84 2967 77 2925 1546 1257 Б 966 37 3352 81 79 1492 1450 81 1161 SB 928 72 3087 3063 64 3040 72 72 2867 1686 1646 64 26 62 13 1160 74 761 15 4 1430 1103 79 731 79 6B 1360 1079 62 691 14 3029 72 3005 68 1599 21 1313 1025 50 82 618 61 1683 41 1303 63 1001 74 688 17...
Data Interpretation - IR Based on the following infrared spectrum: LOD TRANSHETTANCE1% D+ 4000 3000 2000 1500 1000 500 HAVENUHBERI-1 Which of the following functional groups appear in the molecule? Select one or more: Carbonyl group (C=0) Alkene bond (C=C) Hydroxyl group (O-H) Amine group (N-H)
Please label all important peaks on the IR Spectra. % Transmittance 4000 3500 3000 1500 1000 2500 2000 Wavenumbers (cm-1) Date: Thu Nov 07 13:57:45 2019 (GMT-05:0 Thu Nov 07 13:54:54 2019 (GMT-05:00) Scans: 32
Compound X ransmitance 4000 3000 2000 1000 500 1500 Wavenumbers Look at the given IR spectra for compound X. Determine what kinds of bonds/functional group are present and select present/absent. Alcohol / Secondary Amine (O-H/N-H) Carboxylic Acid (O-H) Primary Amine (-NH2) Alkyne (C-H) Alkene (=C-H) Alkane (C-H) Aldehyde (C-H) Triple bond (CC or CN) Carbonyl (C=0) Alkene (C=C) Alkane (C-C) Look at the given compounds. Determine if each could have given the above spectrum. It's possible that more than one...
Identify all important peaks in this IR spectra. RUKER 1000 3500 3000 2500 1500 2000 Wavenumber cm-1 3645.11 3370.58 3026.15 2918.86 2858.20 2752.32 1950.64 1882.30 1810.72 1758.73 1643.29 1604.20 1494.63 1452.44 1384.72 1350.35 1292.76 1201.71 1178.70 1156.17 1058.54 1025.41 979.57 864.79 779.68 737.09 698.26
Spectroscopic Analysis Unknown 1: Molecule Number a) Determine the empirical formula from the microanalysis data, showing your working: Empirical Formula b) Does the mass spectrum imply the molecular formula is the same as the empirical formula? Why/Why not? Molecular Formula c) Use the 'double bond equivalents' formula to determine the degree on unsaturation for this molecule: d) What structural information can you garner from the IR spectrum? e) What structural information can you garner from the 'H NMR spectrum? Specify...
Spectroscopic Analysis Unknown 1: Molecule Number a) Determine the empirical formula from the microanalysis data, showing your working: Empirical Formula b) Does the mass spectrum imply the molecular formula is the same as the empirical formula? Why/Why not? Molecular Formula c) Use the 'double bond equivalents' formula to determine the degree on unsaturation for this molecule: d) What structural information can you garner from the IR spectrum? e) What structural information can you garner from the 'H NMR spectrum? Specify...
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....