1.5 11.0 B (s) 9.82 H 0.92-0. 10.5 10.0 9.5 9.0 8.5 8.0 D (n) 7.42 C (s) 7.47 0652 T 7.5 E (m) 7,04 46-5.44- 1 7.0 6.5 6.0 5.5 f1 (ppm) T 5.0 4.5 A (s) 3.96 00E-007 UI 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 T -0.5 -7000000 -6500000 -6000000 -5500000 -5000000 -4500000 -4000000 -3500000 -3000000 -2500000 -2000000 1500000 Fo -1000000 -500000 -500000

Why KBr used in IR spectroscopic sample preparation?  Please shortly answer at your own words. Answer should be to the point (Specific 2-3 lines).

NMR data Summary NMR solvent: DMSO-d6 'H NMR: Splitting (Multiplicity) Integration Chemical Shift 9.67 singlet 1H singlet doublet 9.17 7.37 6.72 2.00 1H 2H doublet singlet 2H 3H 1"C NMR: Chemical Shift 167.8 153.3 131.1 121.1 115.1 23.8 15N NMR: Chemical Shift 132.3 Instructions: Step 0: Look at the structure of Tylenol. Determine integration, and splitting you are expecting in the 'H NMR. Step 1: Look at the integration and splitting of the signals in the H NMR spectrum - assign the chemical shift of the protons of the methyl group; make a note which signals in the 'H NMR are due aromatic protons, NH and/or OH. Step 2: Look at the 'HSN HSQC spectrum - Use this spectrum to assign the chemical shifts of the NH proton and the OH proton. Step 3: Look at the 'H1SN HMBC spectrum - Use this spectrum to assign the chemical shifts of the aromatic protons in the 'H NMR. Step 4: Look at the 13C NMR spectrum - Make a note which carbon atoms are aromatic and/or alkyl. Assign the chemical shift of…

3 Sketch the appearance of the A2M5X2, 1H-NMR spectrum where A, M, and X represent groups of protons with distinctly different chemical shifts and JAM >JAX >JMX. NOTE: PLEASE sketch for A2M5X2 and NOT for A2M2X5

ching and le X A PLQ-PHY2054L.docx - Google X engagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take ... Translate Open Vellum Course Home [Review Topics] [References] Splitting of a signal in a proton NMR spectrum tells us the number of chemically non-equivalent hydrogens in the immediate vicinity of the hydrogen giving the signal. Predict the number of lines exhibited by hydrogens at the labeled positions in a first-order NMR spectrum. (Make the approximation that all coupling constants are equal.) 1) b a The number of lines exhibited by hydrogen(s) a is The number of lines exhibited by hydrogen(s) b is The number of lines exhibited by hydrogen(s) c is 2) b NH, The number of lines exhibited by hydrogen(s) a is The number of lines exhibited by hydrogen(s) b is The number of lines exhibited by hydrogen(s) c is D

Match the following molecules with their infrared spectrum on the next two pages by placing the answer on the provided lines. There are more molecules (six) than spectra (four). No explanation is necessary. NH₂ % Transmittance % Transmittance 100 90 80 70 60 50 40 30 100 90 80 70 60 50 40 30 20 II OH 4500 4250 4000 3750 3500 3250 III IV 3000 2750 2500 2250 2000 1750 1500 1250 1000 750 500 Wavenumbers (cm-1) FTIR NEAT 250 4500 4250 4000 3750 3500 3250 3000 2750 2500 2250 2000 1750 1500 1250 1000 750 500 250 Wavenumbers (cm-1) V OH VI

Show how the NMR spectrum of 2-bromo-2-methylbutane would look like, include approximate chemical shifts, integration ratios, and signal multiplicity. Briefly state your reasoning so i can understand better, thanks!

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