(i) Write structures of different isomeric amines corresponding to the molecular formula, C_(4)H_(11). (ii) Write IUPAC names of all the isomers. (iii) What type of isomerism is exhibited by different pairs of amines?

(i) Write structures of different isomeric amines corresponding to the

1.	(i) Write structures of different isomeric amines corresponding to the molecular formula, C_(4)H_(11). (ii) Write IUPAC names of all the isomers. (iii) What type of isomerism is exhibited by different pairs of amines?
Answer» Solution :(I, ii) primary amines, (a) `underset("Butanamine")(CH_(3)CH_(2)CH_(2)CH_(2)NH_(2))` (b) `underset("Butan-2-amine")(CH_(3)CH_(2)-underset(NH_(2))underset(\|)(C)H-CH_(3))` (c) `underset("2-Methylpropanamine")(overset(3)(C)-overset(CH_(3))overset(\|)(.^(2)C)H-overset(1)(C)H_(2))-NH_(2)` (d) `underset("2-Methylpropan-2-amine")(CH_(3)-underset(CH_(3))underset(\|)overset(CH_(3))overset(\|)(C)-NH_(2))` Secondary amines: (e) `underset("N-Methylpropanamine")(CH_(3)CH_(2)CH_(2)-NH-CH_(3))` (f) `underset("N-Methylpropan-2-amine")(overset(3)(C)H_(3)-overset(.^(1)CH_(3))overset(\|)(.^(2)C)H-NH-CH_(3))` (g) `underset("N-Ethylthanamine")(CH_(3)-CH_(2)-NH-CH_(2)CH_(3))` Tertiary amines: (h) `underset("N,N-Dimethylethanamine")(CH_(3)-overset(CH_(3))overset(\|)(N)-CH_(2)CH_(3))` (III) Position ISOMERS: (a) and (b), (e) and (f) Chain isomers: (a) and (c), (a) and (d), (b) and (c), (b) and (d). Metamers: (e) and (g), (f) and (g). (iv) Functional isomers: All `1^(@)` amines are functional isomers of `2^(@) and 3^(@)` amines and vice-versa.