2) Please determine the number of IR-active C-O stretching vibrations for the following molecules. Show your work! Note you are not being asked to derive a reducible representation for the entire molecule, only the C-O stretching vibrations: (a) OECI OEC OEU CEO IIC/ CI (b) OECIES CEO (c) OEC-FeCEO GEO

2) Please determine the number of IR-active C-O stretching vibrations for the following molecules. Show your work! Note you are not being asked to derive a reducible representation for the entire molecule, only the C-O stretching vibrations: (a) OECI OEC OEU CEO IIC/ CI (b) OECIES CEO (c) OEC-FeCEO GEO

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 13E

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Q2: Choose the correct answer for each of the following: () 1 - In the infrared spectrum of a Compound containing a triple C-C bond, the amplitude oscillation band appears The Stretch) has at: - A) 2700 cm ¹ b) 2100 cm ¹ -1 c) 3100 cm ¹ 2- Stretching frequency of the O=C bond of a compound (3-butene-2-on) is less than the stretching frequency of a compound (2-propanone) a.) hydrogen bonding c) Vibration duplication b) Electronic effects 3- The compound o-hydroxybenzoic acid can be distinguished from the compound m-hydroxybenzoic Acid by infrared spectroscopy based on: a) OH. Group b) group curve oscillation) C-H c) group amplitude oscillation C=O
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