Viết đồng phân và gọi tên

C4H8 (alkene)

a)$\rm C_4H_8$

$\rm \mathop{C}\limits^{1}H_2=\mathop{C}\limits^{2} H-\mathop{C}\limits^{3} H_2-\mathop{C}\limits^{4} H_3$

$\rm \to$ but  `- 1 -` ene

$\rm \mathop{C}\limits^{1}H_3-\mathop{C}\limits^{2} H=\mathop{C}\limits^{3} H-\mathop{C}\limits^{4} H_3$

$\rm \to$ but ` - 2 -` ene

$\rm \mathop{C}\limits^{1}H_2=\mathop{C}\limits^{2} -\mathop{C}\limits^{3} H_3\\\hspace{1,7cm}|\\\hspace{1,6cm}CH_3$

$\rm \to$ ` 2 -` methylpropene

b)$\rm C_5H_{12}$

$\rm \mathop{C}\limits^{1}H_3-\mathop{C}\limits^{2} H_2-\mathop{C}\limits^{3} H_2-\mathop{C}\limits^{4} H_2-\mathop{C}\limits^{5} H_3$

$\rm \to $ pentane

$\rm \mathop{C}\limits^{1}H_3-\mathop{C}\limits^{2} H-\mathop{C}\limits^{3} H_2-\mathop{C}\limits^{4} H_3\\\hspace{1,7cm}|\\\hspace{1,6cm}CH_3$

$\rm \to$ `2 - ` methylbutane

$\rm \hspace{1,6cm}CH_3\\\hspace{1,7cm}|\\\mathop{C}\limits^{1}H_3 -\mathop{C}\limits^{2} -\mathop{C}\limits^{3} H_3\\\hspace{1,7cm}|\\\hspace{1,6cm}CH_3$

$\rm \to$ ` 2,2 - ` dimethylpropane