Page 432 - Carrahers_Polymer_Chemistry,_Eighth_Edition

Organometallic and Inorganic–Organic Polymers 395

Borazine
H CH 3
C H CH
+ +
H N H N
– – – –
B B B B
+ Boron Carbonitride (11.34)
+ + + +
N N N N
H B – H 3 C H B – CH 3
H
CH

R
+
H N H
– –
B B
+ +
N N
H B – H
R
Polyborazylene (11.35)

11.5.1 FERROCENE-CONTAINING AND RELATED POLYMERS
The landmark discovery of ferrocene by Kealy and Paulson in 1951 marked the beginning of mod-

ern organometallic chemistry. The first organometallic addition polymer was polyvinylferrocene
synthesized by Arimoto and Haven in 1955. While polyvinylferrocene (11.36) had been synthe-
sized, it was about another decade until the work of Pittman, Hayes and George, and Baldwin and
Johnson allowed a launch of ferrocene-containing polymers.

R
R

Fe (11.36)

A large number of vinyl organometallic monomers have been prepared, homopolymerized, and
copolymerized with classic vinyl monomers by Pittman and others. These include polymers con-
taining Mo, W, Fe, Cr (11.37), Ir, Ru, Ti (11.38), Rh (11.39), and Co.

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