question_answer

Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is       AIEEE  Solved  Paper-2007

A) \[{{R}_{2}}SiC{{l}_{2}}\]

B)        \[{{R}_{3}}SiCl\]               

C)        \[{{R}_{4}}Si\]   

D)        \[RSiC{{l}_{3}}\]

Correct Answer: D

Solution :

                n \[RSiC{{l}_{3}}\xrightarrow[-3n\,HCl]{3n\,{{H}_{2}}O}n\,R-\overset{\begin{smallmatrix}  OH \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{S}}\,}}\,i-OH\xrightarrow{{}}\]                                                            Cross linked silicone polymer