A POSSIBLE MODEL FOR THE STEREOSPECIFICITY IN THE SYNDIOSPECIFIC POLYMERIZATION OF PROPENE WITH GROUP-4A METALLOCENES

被引：134

作者：

CAVALLO, L ^{[1
]}

GUERRA, G ^{[1
]}

VACATELLO, M ^{[1
]}

CORRADINI, P ^{[1
]}

机构：

[1] NAPLES UNIV,DIPARTMENTO CHIM,VIA MEZZOCANNONE 4,I-80134 NAPLES,ITALY

来源：

MACROMOLECULES | 1991年 / 24卷 / 08期

关键词：

D O I：

10.1021/ma00008a015

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The techniques of conformational analysis to investigate the factors that determine the stereospecificity, previously applied to stereorigid model sites for the homogeneous isospecific Ziegler-Natta catalysis, are now extended to other stereorigid cationic model sites. For a model site including an isopropyl(cyclopentadienyl-1-fluorenyl) ligand, a precise definition of the interactions that determine its enantioselectivity at the molecular level is presented. For other model sites including an isoprophyl(cyclopentadienyl-1-indenyl) or an isopropyl(1-fluorenyl-3-methylcyclopentadienyl) ligand, on the basis of energy calculations, predictions of their stereospecific behavior are presented, which are in a qualitative agreement with the available experimental information.

引用

页码：1784 / 1790

页数：7

共 39 条

[1]

AMMENDOLA P, 1984, MAKROMOL CHEM, V185, P2599

[2] ZIEGLER-NATTA CATALYSIS .3. STEREOSPECIFIC POLYMERIZATION OF PROPENE WITH THE CATALYST SYSTEM TICL3-ALET3 [J].

ARLMAN, EJ ;

COSSEE, P .

JOURNAL OF CATALYSIS, 1964, 3 (01) :99-104

[3] STUDY OF THE STEREOCHEMISTRY AT IRON OF ELECTROPHILIC CLEAVAGE OF THE IRON-CARBON SIGMA-BOND IN METHYL(ETA-5-1-METHYL-3-PHENYLCYCLOPENTADIENYL)-CARBONYL(TRIPHENYLPHOSPHINE)IRON(II) [J].

ATTIG, TG ;

TELLER, RG ;

WU, SM ;

BAU, R ;

WOJCICKI, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1979, 101 (03) :619-628

[4] CRYSTAL STRUCTURE OF AN ORGANOMETALLIC COMPLEX WITH TITANIUM-CARBON SIGMA BONDS - TETRABENZYLTITANIUM [J].

BASSI, IW ;

ALLEGRA, G ;

SCORDAMA.R ;

CHIOCCOL.G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (15) :3787-&

[5] CARBON-HYDROGEN-TRANSITION METAL BONDS [J].

BROOKHART, M ;

GREEN, MLH .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1983, 250 (01) :395-408

[6]

CAHN RS, 1966, ANGEW CHEM INT EDIT, V5, P394

[7]

CAVALLO L, 1989, POLYM COMMUN, V30, P17

[8]

CAVALLO L, IN PRESS POLYMER

[9] STRUCTURE AND REACTIVITY OF BIS(PENTAMETHYLCYCLOPENTADIENYL)(ETHYLENE)TITANIUM(II), A SIMPLE OLEFIN ADDUCT OF TITANIUM [J].

COHEN, SA ;

AUBURN, PR ;

BERCAW, JE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (05) :1136-1143

[10]

CORRADINI P, 1983, GAZZ CHIM ITAL, V113, P601

← 1 2 3 4 →