The group most likely responsible for the peak at "3" is most likely: OCEN OC=C (aromatic) OC=C (chain) OC-H (alkenyl or aryl) OC=0 O OH OC-H (alkyl)
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- For each structure below, use numbers to indicate chemically equivalent and distinct hydrogens,and make a table showing the predicted integration and multiplicity of each peak cluster.Complete the table below, and provide a structure of a compound that is consistent with the molecular formula C7H12O2 and the following 13C DEPT data. Please show your work. Also, place emphasis on the meaning of the "no peak no peak" dataFor norbornene and 3-bromobenzaldehyde: 1. determine the unique protons present 2. predict the multiplicities and draw its corresponding tree diagrams
- Make a sketch of the partial mass spectrum of 1-bromoheptane, showing the position of the peaks for: [Masses: H=1; C=12; Br=79 and Br=81 (isotopes)] i) The Molecular ion(s) ii) The fragments resulting from a split between carbons 3 and 4. iii) The fragments resulting from a split between carbons 5 and 6.Explain how the peaks in this spectrum occur. Especially the one at 77, which involves two fragmentations. The structure this corresponds to is 1-phenyl-1-butanoneIdentify the Campesterol peak of the GC-MS of Burn Morel mushrooms (Tomentosa) and the M (+/-) peaks that are present. Include the mass and signature intensities of the peaks main product.
- Choose the most possible compound for this FTIR spectrum. a. 2-pentanone b. 1-pentanol c. 2-methyl pentane d. 1-bromopentaneExplain all splitting patterns observed for absorptions between 0 and 8 ppm for the alcohol shown below. Which proton or protons will give rise to a doublet at 1.4 , which ones will give rise to a singlet at 2.7, which ones will give rise to a quartet at 4.7 and which ones will give rise to multiplets at 7.4?Assign the IR spectra given in Questions 1 - 3 to their corresponding structures from the ones below. The number in parentheses next to each possible answer corresponds to the structure's Chemical Abstracts Services (CAS) number. 1-bromobutane (109-65-9) 1-cyclopropylethan-1-one (765-43-5) 1-ethyl-3-methylbenzene (620-14-4) 1,2-dimethoxynenzene (91-16-7) 2,3-dimethylbutan-2-ol (594-60-5) 3-methylbutan-1-ol (123-51-3) 3,3-dimethylbutan-2-one (75-97-8) 4-benzylpiperidine (31252-42-3) 4-methoxybenzaldehyde (123-11-5) acetic anhydride (108-24-7) acetonitrile (75-05-8) acetyl chloride (75-36-5) anisole (100-66-3) benzaldehyde (100-52-7) benzoic acid (65-85-0) benzophenone (119-61-9) benzyl acetate (140-11-4) bromobenzene (108-86-1) cyclohex-2-en-1-one (930-68-7) cyclohexanone (108-94-1) cyclopent-2-en-1-one (930-30-3) diethylamine (109-89-7) dimethyl malonate (108-59-8) ethyl 2-cyanoacetate (105-56-6) ethynylbenzene (536-74-3) heptanoic acid…
- A prominent (M+ . -18) peak suggests that the compound might be what? A. Alkane B. Alcohol C. Ether D. KetonePent-1-ene and pent-1-yne are low-boiling hydrocarbons that have differentmolecular ions in their mass spectra. Match each hydrocarbon to its massspectrum.Which compound gives rise to a major [M − 18] peak in the mass spectrum? Group of answer choices A. 1-bromoheptane B. 4-methylheptane C. 2-heptanol D. 3-ethylheptane