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Which molecule matches this mass spectrum
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- 13 C,H120 MICRONS 9 10 13 14 15 16 100 70 60 20 1000 800 600 400 1400 WAVENUMBERSS (CM) 4000 3600 3200 2800 2400 2000 1800 1600 1200 10 % TRANSMITTANCEQUESTION 5 The IR, 'H NMR and 1°C NMR spectra of compound P are shown below. The molecular formula for compound P is CsH;NO2. Identify three (3) important absorption peaks on the IR spectrum and indicate the bond and wavenumber associated with each peak. Elucidate the structure of compound P and assign each peak in the 'H and 13C NMR spectra. (Hint: The compound consists of more than one functional group). а. b.Attach the spectra for A and B compounds here and identify the functional groups by completing the table for A and B respectively. S of them! Group Group Frequency Intensity (cm-¹) A Frequency Intensity (cm-¹) B 1. Acohol 2. Aromatic ring 3. c = c stretching vibration 4 CH bend 5. Amine.
- Match each of the following compounds to one of the IR spectra shown below. .CI (а) OH (b) (c)Spectrum 28 100% 75%- 50%- 25% 0% 3500 2500 1750 1250 750 4000 3000 2000 1500 1000 50 Wavenumber (cm) NH2 Transmittance (%)Transmittance (%) Transmittance (%) 100 50 4000 100 4000 3000 2000 1500 Wavenumber(cm¹) 1500 Wavenumber(cm¹) 1000 1000 500
- Intensity (a.u.) 4000 3352 cm¹ 3500 3000 UNKNOWN B 1710 cm¹ 2000 1668 cm¹ 2500 Wavenumber (cm¹¹) 1500 1101 cm 1000 500▼ ▼ Part A In the rotational spectrum of H³5Cl (I= 2.65 x 10-47 kg m²), the transition corresponding to the J = 4 to J = 5 transition is the most intense. At what temperature was the spectrum obtained? Express the temperature in kelvins to three significant figures. ΠΫΠΙ ΑΣΦ T = Submit Part B J= Request Answer At 1000. K, which rotational transition of H³5 Cl would you expect to demonstrate the greatest intensity? Express your answer as an integer. V—| ΑΣΦ Submit Request Answer K ?2 infrared spectra are on the back of this page. a. Draw an arrow to the O-H peak and label it. b. Draw an arrow to the C=O peak and label it.
- 8 11) Chemical Formula: C₁0H12O2 IR: strong peak 1720cm-¹ 10 1H 8 12) Chemical Formula: C9H200 IR: strong broad 3300cm-1 2H 2H PPM 10x2= 20+2=22=12=10/2=5 6 PPM septet 1H 9x2=18+2=20-20=0 2 0 6H100 - 80 60 40 20 10 15 20 25 30 35 40 45 50 55 60 m/z Absorbance / % 50- 100+ 4000 3000 2500 2000 1500 1000 500 Wavenumbers / cm Relative Intensity / %1-31. We shall learn when we study molecular spectroscopy that heteronuclear diatomic molecules absorb radiation in the microwave region and that one determines directly the so-called rotational constant of the molecule defined by B = 8721 where I is the moment of inertia of the molecule. Given that B = 3.13 × 105 MHz for H35C1, calculate the internuclear separation for H35C1. The atomic mass of H and 35C1 are 1.008 and 34.97, respectively.