Russian Journal of Applied Chemistry, 2011, Vol. 84, No. 10, pp. 1813−1820.
Pleiades Publishing, Ltd., 2011.
Original Russian Text © M.V. Pavlovskaya, E.V. Kolyakina, E.S. Kotlova, L.N. Gruzdeva, D.F. Grishin, 2011, published in Zhurnal Prikladnoi Khimii, 2011,
Vol. 84, No. 10, pp. 1721−1728.
AND POLYMERIC MATERIALS
Monomer-Containing Manganese Complexes
in Polymerization of Methyl Methacrylate and Styrene
M. V. Pavlovskaya, E. V. Kolyakina, E. S. Kotlova,
L. N. Gruzdeva, and D. F. Grishin
Research Institute of Chemistry, Lobachevsky Nizhni Novgorod State University, Nizhni Novgorod, Russia
Received March 1, 2011
Abstract—Polymerization of methyl methacrylate and styrene in the presence of manganese cyclopentadienyl
carbonyl–oleﬁ n complexes, with styrene and methyl methacrylate as oleﬁ ns, was studied. The molecular-weight
distribution of the polymers obtained was examined.
Variable-valence metal complexes are widely used
in preparation of polymeric materials with preset
properties and characteristics [1–5]. Catalytic systems
based on transition metals ensured essential progress
in polymer technologies [6, 7]. Further progress
in improvement of polymer synthesis processes is
associated with the use of catalysts of a new generation,
“metallocene” catalysts [8, 9]. Today metal complex
catalysts are widely used for metathesis polymerization
of oleﬁ ns [10, 11], polymer synthesis by the “living”
chain mechanism [1, 2, 5], and other polymerization
processes. Examples of metal complex catalysts
are stable transition metal complexes containing
-coordinated monomeric units . Data on their
possible use for initiating the polymerization of vinyl
monomers are limited to a single paper .
In the context of studying the catalytic activity of such
metal complexes and developing new initiating systems
for the polymerization of vinyl monomers, it seemed ap-
propriate to study the speciﬁ c features of the polymeriza-
tion of methyl methacrylate (MMA) and styrene (ST) as
the most commercially signiﬁ cant monomers in the pres-
ence of stable manganese cyclopentadienyl (Cp) carbonyl
complexes containing a coordinated monomer molecule
[scheme (1)], and also of formulations based on these
complexes and various halogenated organic compounds
(carbon tetrachloride ССl
, ethyl 2-bromoisobutyrate
EIB-Br, isoamyl iodide i-C
I) (Scheme 1).
Undoubtedly, the use of such compounds in polymer-
ization processes will allow the most detailed evaluation
of the effect exerted on the macromolecule synthesis not
only by the metal coordination sphere, but also by its