Mechanism of initiation of cationic and anionic polymerization of methylenecyclobutenes

被引：0

作者：

Kalnin'sh, K. K. ^{[1
]}

Semenov, S. G.

机构：

[1] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia

[2] St Petersburg State Univ, St Petersburg, Russia

来源：

RUSSIAN JOURNAL OF APPLIED CHEMISTRY | 2006年 / 79卷 / 09期

关键词：

Cationic polymerization;

D O I：

10.1134/S1070427206090175

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The mechanism of initiation of cationic and anionic polymerization of methylenecyclobutenes, yielding different polymeric products, was studied quantum-chemically on the basis of electronic excitation in an elementary chemical process, using the formalism of free valence indices. In the cationic polymerization, the polymer chain consists of cyclobutene fragments linked by methylene bridges, and in anionic polymerization, of saturated cyclobutane fragments linked directly to each other and containing exocyclic methylene substituents.

引用

页码：1485 / 1489

页数：5

共 15 条

[1]

DEGIAMBIAGI MS, 1984, Z NATURFORSCH A, V39, P1259

[2]

DMITRIEV IS, 1980, KVANTOVAYA KHIMIYA P

[3] DEFINITION OF AVE BOND INDEX WITH NON-ORTHOGONAL BASIS - PROPERTIES AND APPLICATIONS [J].

GIAMBIAGI, M ;

GREMPEL, DR ;

HEYMANN, CD .

JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE, 1975, 72 (01) :15-22

[4]

HALL HK, 1976, J POLYM SCI MACROMOL, V11, P1

[5]

Kalnin'sh K. K., 2005, ZH PRIKL KHIM, V78, P1157

[6]

KALNINSH KK, 1998, ELEKT VOZBUZHDENIE K

[7]

KENNEDY JP, 1975, CATIONIC POLYM OLEFI

[8] CHARGE DENSITIES IN CONJUGATED SYSTEMS [J].

MCWEENY, R .

JOURNAL OF CHEMICAL PHYSICS, 1951, 19 (12) :1614-1615

[9] SOME RECENT ADVANCES IN DENSITY MATRIX THEORY [J].

MCWEENY, R .

REVIEWS OF MODERN PHYSICS, 1960, 32 (02) :335-369

[10] ELECTRONIC POPULATION ANALYSIS ON LCAO-MO MOLECULAR WAVE FUNCTIONS .1. [J].

MULLIKEN, RS .

JOURNAL OF CHEMICAL PHYSICS, 1955, 23 (10) :1833-1840

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