(a)(c)12.4 Which IR spectrum is consistent with an alkene?100100808060604040-20201500 100020002500Wavenumber (cm¹)20002500Wavenumber (cm¹)% Transmittance0.4000100% Transmittance80-6040-20.0.4000350035003000300015001000(b)(d)% Transmittance% Transmittance040001008060-40-200.40003500350030003000mmy150025002000Wavenumber (cm¹)20002500Wavenumber (cm)150010001000

The main characteristic IR peak of alkene is a medium stretch in the range 3000 - 3100 cm-1 due to…

(a) (c) % Transmittance 12.4 Which IR spectrum is consistent with an alkene? 100 100 80 80 60 60- 40 40 20 20. 0. 4000 2500 2000 1500 1000 Wavenumber (cm¹) 3000 2500 2000 1500 Wavenumber (cm¹) 100 80 60- 40 20 % Transmittance 3500 0. 4000 3500 3000 1000 (b) (d) % Transmittance 0 4000 % Transmittance 3500 100 80 60 40 20 0 4000 3500 2000 Wavenumber (cm¹) 2000 Wavenumber (cm) 3000 2500 T 3000 2500 1500 1000 1000 1500

(a) (c) % Transmittance 12.4 Which IR spectrum is consistent with an alkene? 100 100 80 80 60 60- 40 40 20 20. 0. 4000 2500 2000 1500 1000 Wavenumber (cm¹) 3000 2500 2000 1500 Wavenumber (cm¹) 100 80 60- 40 20 % Transmittance 3500 0. 4000 3500 3000 1000 (b) (d) % Transmittance 0 4000 % Transmittance 3500 100 80 60 40 20 0 4000 3500 2000 Wavenumber (cm¹) 2000 Wavenumber (cm) 3000 2500 T 3000 2500 1500 1000 1000 1500

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter19: Alkenes From Alcohols: Cyclohexene From Cyclohexanol

Section: Chapter Questions

Problem 4Q

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