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Part-IIResults and Discussionmass spectrum of compound, VIiv showing the molecular ion (a) at m/e 304, iscorresponding to its molecular weight. The major mode of fragmentation is loss of ethylfragment from the molecular ion (a) to give the daughter ion (b) m/e 276. The molecularion (a) also loses 5-methyl group to give second daughter ion (c), m/e 289. The molecularion (a) loses a neutral molecule of ethanol to give a third daughter ion (d) m/e 259. Thefragment (d) loses neutral molecule of CO to give fragment (e) m/e 232, which furtherejects one of the chloride ion to give fragment (f) m/e 195. The fragmentation pattern ofthe compound VIiv, is given in the Scheme 5.Cl+.NCl-CH 3.ClOONSa, M + = m/e 304VIivNCl- . CH 2 CH 3-CH 3 CH 2 OHOOSc, m/e 289NClNClOONSb, m/e 276ClN+ .ClSClNN-Cl .ClONNSd, m/e 259-CO+ .Clf, m/e 195SNScheme- 5e, m/e 232The mass spectrum of compound, VIv showing the molecular ion (a) at m/e 273 and iscorresponding to its molecular weight. The major mode of fragmentation is loss of ethylfragment from the molecular ion (a) to give the daughter ion (c) m/e 244. The daughter346