Question

This is an organic chemistry problem and i need them numbered out and written properly and correctly. any written mistake will be thumbs down. USE THe structure as reference and Do ALL PROBLEMS ASAP

1) determine the index of hydrogen deficiency (HD) 2) draw the possible structures based on the IHD 3) for each structure, indicate how many different kinds of hydrogens are present based on the structure 4) determine the one structure that is consistent with the PMR spectrum with regard to the different of kinds of hydrogens, the relative numbers of each kind of hydrogen, and the splitting patterns 5) identify which hydrogens correspond to which peaks in the PMR spectrum by labeling both the hydrogens and the peaks a, b, c, etc., as was done in the discussion

Answer 1

C₂ H3U : 10) IHD = IHO (20+2) -H-X - C = # of c. (x=() = # of ce - IHD = (2x2+2) - 3-3 THD and = 60 =0 suggests that there is no double in Catal CH34, is not a cyclic molecule. possible structures Structures and v) are identical (same) while struttures and are same This possible structures are a @ H4c- :

3 No. of cufferent types of hydrogens can be counted simply by lij substituting all the hydrogens with any other group and see the relationship between them the structure. KU) If all structures are identical, the hydrogeno substitutes substituted by other groups will be same. If eett substituded structures are enantiomers a diastereomers, substituded H beill be cilds crent. Нас нь II HC tha . He Ho D : Ha - - G nijluハ 451 HC structures (i), (i) 4 (iare identical. So Ha, Ho & He protons are equivalent so, there is only, type of it in (a). le, it will give one singal due to 34 in IH NMR ( or.ph PNMR)

Ha HC-843 Let us This is one type of H. (+) Hi relationship between Ha 4 Hb. EC-(uz (1) & (11) are enantiomers so Has Hy will be clifferent kind of pistons known as . enantiotopic proting. Thus, three kinds of t namely Ha, Hbf Hc : aric present in 6 Analysis of PNMR : 6 S: 2 3.75 ppm (singlet) suggests structure HC H - --- SS 2.75 18,34)