Name Points 50 For the following questions interpret the mai

Name: Points /50) For the following questions interpret the main peaks in each spectra (the ones that allow you to identify the product). Show MW, unsaturation number, parent ion, base peak and how the molecules break down to give the masses on the spectra (what the parent and daughter ions look like). List all possible details! Interpret the following MS and determine the structure for the molecular formula CsHsO (10 points) 1. 100-1-5ro 80 60 40 20 50 60 70 80 20 30 10 m/z

Solution

ANSWER

no of double bonds (no of carbon atoms+1)- [no of H atoms]/2

= 6-8/2

=2

molecule contain two unsaturations. from the spectrum the parent peak is appears at M/Z= 84

base peak is appears at M/Z= 55 ( CH₃-CH₂-C=O⁺ )

peak appears at M/Z= 29 (CH₃-CH₂-)

peak appears at M/Z= 27 (-CH=CH₂ )

From the above data the structure of the compound is CH₃-CH₂-CO-CH=CH₂

The name of this compound is 1-pentene,3-none.

molecular weight of this compound is 84.