Answer to Question #187118 in Organic Chemistry for Annah Rivera

Question

Find Unknown compound and explain?

IR data: IR Spec Bands detected - 1700, strong

carbonyl group, C=O bond

Mass Spectrometry information:

Base peak- 28, M+- 160, No M+2,

HNMR :

17 peaks

septet peak 1-6 : 4-3.8ppm

quartet peak 7-11: 3.2-3 ppm

sextet peak 11-17: 1.2- .8 ppm

Answer 1

Carbonyl stretching peaks generally fall between 1900 and 1600 cm-1 (assume all peak positions hereafter are in wavenumber units), a relatively unique part of the IR spectrum. This area is sometimes referred to as the carbonyl stretching region as a result.