ABC26IN0194 · Main Group Elements
Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Exam: CSIR-NET 2014 · Marks: 2 · Difficulty: Medium
The reaction between diphenyldichlorosilane and water in 1:2 molar ratio gives product A which on heating above $100^{\circ}\mathrm{C}$ yields a cyclic or polymeric product B. The products A and B respectively, are
(a)
and 
and (b)
(c) and $(\mathrm{Ph_2SiO})_n$ (n = 3,4.....)
and $(\mathrm{Ph_2SiO})_n$ (n = 3,4.....)(d)
and 
and Answer
Answer (as printed): C
Explanation
The reaction is as follows:
\[ \mathrm{Ph_2SiCl_2 + 2H_2O \rightarrow Ph_2Si(OH)_2 + 2HCl} \]
1 : 2 Diphenyldichlorosilane (A) \quad\quad Diphenylsilanediol Now, (A) undergoes condensation polymerisation to yield (B), which is an inorganic silicon polymer, as follows: