The IR band in Figure 16-33 that indicates an OH group is to be identified. In addition, the locations where you would expect to see absorptions corresponding to C=C and alkyne C-H stretches are to be identified. Concept introduction: In general, the H-O signal occurs between 3200 and 3600 cm -1 and gives rise to a broad and strong signal. In general, the C=C signal occurs between 2100 and 2260 cm -1 and gives rise to narrow signals varying in intensity. In general, the alkyne C-H signal occurs at 3300 cm -1 and gives rise to a strong signal that is relatively narrow. In this example, the H-O signal is centered around 3400 cm -1 and no signals are present for C=C or alkyne C-H (although it is possible that an alkyne C-H signal could be buried under a H-O signal).

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Chapter 16, Problem 16.25YT

Interpretation Introduction

Interpretation:

The IR band in Figure 16-33 that indicates an OH group is to be identified. In addition, the locations where you would expect to see absorptions corresponding to C=C and alkyne C-H stretches are to be identified.

Concept introduction:

In general, the H-O signal occurs between 3200 and 3600 cm-1 and gives rise to a broad and strong signal. In general, the C=C signal occurs between 2100 and 2260 cm-1 and gives rise to narrow signals varying in intensity. In general, the alkyne C-H signal occurs at 3300 cm-1 and gives rise to a strong signal that is relatively narrow. In this example, the H-O signal is centered around 3400 cm-1 and no signals are present for C=C or alkyne C-H (although it is possible that an alkyne C-H signal could be buried under a H-O signal).

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