Label NMR spectra. -2.009 "H NMR Spectrum in CDCI, B16'0 E160- 2.320 -0.894 2 2962- 622...
Label NMR spectra. Label Functional groups: Esters- ethyl acetate # of unique H environment local chemical environment # of H in each environment # of neighboring protons 'H NMR Spectrum in CDCI; -2.289 L2.195 TTTTTTTTTTTTTTTTTTTTTTTTT 2.8 2.6 2.4 2.2 2.0 1.6 1.6 1.4 1.2 1.6 0.8 0.6 0.4 ppm 26.07 38.09 35.84 -0.806 -0.830 0.781 -.4 1.2 1.0 0.8 0.6 0.4 ppm 35.84 2.243 2.219 - -2.269 22.195 2.6 4 .4 2.2 2.0 1.8 1.6 26.07 1.4 38.09
To give you more practice with analyzing NMR spectra, match each of the following 'H-NMR spectra to one of the five possible compounds (structures below). Assign the NMR peaks to their respective hydrogens. Possible compounds: CH2. (H3 diethyl malonate p-ethylanisole OH 3-methylbutanal 1-pentene 1-propanol 6.0 2.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 ppm a. 1.80 1.70 1.60 1.50 1.40 1.30 3.0 ( 2.0 | 2.0 2.32...
Label NMR spectra Corboxylic Acids (#1): "C NMR Spectrum in CDCI, ppm 20 40 60 76.745 80 E2 120 -128.455 129.328 TOZOFT TOREET 140 160 172.595 180 20 40 09 OB .................................. ......... 00T ...........021 OZT -76.745 -76.993 -77.249 -172.595 180 160 133.801 136.201 129.328 -128.455
Please label all spectra for C5H9O2Br Problem 2 IR Spectrum liquid film) 1740 4000 3000 2000 1600 V (cm) 1200 600 Mass Spectrum قليلالالالالالا % of base peak No significant UV absorption above 220 nm 107/109 152/154 M + 180/182 C5H,OBr 40 80 200 240 120 160 m/e 280 . 13C NMR Spectrum (50,0 MHz, CDCI, solution) DEPT CH CH CH4 proton decoupled solvent 200 160 120 80 OLII 40 08 (ppm) TH NMR Spectrum (300 MHz, CDCI, solution) expansion...
Draw and name the molecule for the following 3 H-NMR. С5Н100 зн| 2н ЗНІ 2H 3.0 2.В 25 24 25 26 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 РРИ
Practice Problems: 1a. Analyze the given H NMR spectrum of 3-methyl-2-butanone. Explain why there are 3 different signals. Assign the signals to the correct H's. 3-methyl-2-butanone 1b. Do the observed splitting patterns follow the N+1 rule? Explain. .2 3.0 2.8 fi (ppm) 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0. Be very careful: it is NOT the number of H's giving rise to a signal that determines its splitting pattern. Instead, it is the number of H's...
label the spectrum OTBS Meo Yome Me H NMR spectrum (CDC13, 400 MHz) 8.5 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 f1 (ppm) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -0.5 18C NMR spectrum (CDCI, 100 MHz) 210 200 190 180 170 160 150 140 130 120 110 100 fi (ppm) 90 80 70 60 50 40 30 20 10 -10
Determine the structure of the chemical compound from the proton NMR spectrum 1.9 1.8 1.50 1.7 1.45 1.483 1.6 1.40 (2.473 11,467 -1.461 11.446 1.5 1.435 1.424 1.420 1.4 ppm 21.407 1.3 1.396 21-1.388 1.372 1.359 142.346 1.324 -1.308 -1.303 1.202 1.2 1.1 1.0 -0.951 -0.928 -0.904 0.9 0.8 0.7 Co Higo 0.6 0.5 ppm
assign the major absorptions in the IR spectra, assign chemical shifts in both NMR, designate the parent peak in the mass spectra data and assign the major fragments to their corresponding peaks, and finally provide the structure for the formula. MF CHE MW 68 %C88.2 *H 11.8 Mass Spec. Data relative m/ abund. 21 3H .. Copyright © 1994 Note 'long-range' coupling. T TTTTTTTTTTTTTTTTT 2.4 2.2 2.0 Proton NMR 1.8 1.6 1.4 1.0 0.8 PPM Carbon 13 NMR
Draw and name the molecule for the following 3 H-NMR. CsH100 3.0 2.8 2.6 " 1.4 1.2 1.6 0.8 0.6 PPM C4H8O2 зн 1.0 PPM 0.5 C3H6O2 H