THE X-RAY CRYSTAL-STRUCTURES OF THE ANSA-METALLOCENES, ME(2)C(C5H4)(2)MCL(2) (M=TI, ZR AND HF)

被引：70

作者：

SHALTOUT, RM ^{[1
]}

COREY, JY ^{[1
]}

RATH, NP ^{[1
]}

机构：

[1] UNIV MISSOURI,DEPT CHEM,ST LOUIS,MO 63121

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 503卷 / 02期

关键词：

TITANIUM; ZIRCONIUM; HAFNIUM; ANSA-METALLOCENES; DEHYDROGENATIVE COUPLING;

D O I：

10.1016/0022-328X(95)05561-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Group 4 metallocenes and ansa-metallocenes are known for their role in the Ziegler-Natta catalysis of olefins and in the catalytic dehydrocoupling of hydrosilanes to form polysilanes. This report describes the crystal structures of three carbon-bridged ansa-metallocene dichlorides, Me(2)C((C5H4)(2))MCl(2)(M = Ti (1), Zr (2) and Hf(3)). Comparisons of the structures of the molecules with previously characterized systems is made; in particular, the Cp(centroid)-M-Cp(centroid) angle, the position of the metal relative to the cyclopentadienyl rings and the uniformity of the C-C bond lengths in the Cp rings are discussed. Comparisons between structure and reactivity in the dehydrocoupling of hydrosilanes are described.

引用

收藏

页码：205 / 212

页数：8

相关论文

共 38 条

[1] SYNTHESIS, STRUCTURAL CHARACTERIZATION, AND ELECTROCHEMISTRY OF [1]METALLOCENOPHANE COMPLEXES, [SI(ALKYL)2(C5H4)2]TICL2,[SI(ALKYL)2(C5H4)2]ZRCL2 [J].

BAJGUR, CS ;

TIKKANEN, WR ;

PETERSEN, JL .

INORGANIC CHEMISTRY, 1985, 24 (16) :2539-2546

[2] THEORETICAL-STUDIES OF ZIEGLER-NATTA CATALYSIS - STRUCTURAL VARIATIONS AND TACTICITY CONTROL [J].

BIERWAGEN, EP ;

BERCAW, JE ;

GODDARD, WA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (04) :1481-1489

[3] THE ROLE OF TRANSITION-METAL ATOMS AS HYDROGEN-BOND ACCEPTORS - A NEUTRON-DIFFRACTION STUDY OF [NPRN4]2[PTCL4].CIS-[PTCL2(NH2ME)2] AT 20-K [J].

BRAMMER, L ;

CHARNOCK, JM ;

GOGGIN, PL ;

GOODFELLOW, RJ ;

ORPEN, AG ;

KOETZLE, TF .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1991, (07) :1789-1798

[4]

BURGER P, 1992, ORGANOMETALLICS, V2, P1319

[5] STRUCTURAL STUDIES OF (PI-C5H5)2MX2 COMPLEXES AND THEIR DERIVATIVES - STRUCTURE OF BIS(PI-CYCLOPENTADIENYL)TITANIUM DICHLORIDE [J].

CLEARFIELD, A ;

WARNER, DK ;

SALDARRIAGAMOLINA, CH ;

ROPAL, R ;

BERNAL, I .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1975, 53 (11) :1622-1629

[6]

Corey J. Y., 1991, ADV SILICON CHEM, V1, P327

[7] ZIRCONOCENE DICHLORIDE [J].

COREY, JY ;

ZHU, XH ;

BRAMMER, L ;

RATH, NP .

ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1995, 51 :565-567

[8] CATALYTIC DEHYDROGENATIVE COUPLING OF SECONDARY SILANES WITH CP2MCL2/NORMAL-BULI [J].

COREY, JY ;

ZHU, XH ;

BEDARD, TC ;

LANGE, LD .

ORGANOMETALLICS, 1991, 10 (04) :924-930

[9]

COREY JY, 1994, PROGR ORGANOSILICON, P387

[10] SYNTHESIS OF TITANOCENE DERIVATIVES OF TETRAMETHYLDISILOXANE AND POLY(METHYLSILOXANE) AND THE MOLECULAR-STRUCTURE OF THE DISILOXANE-BRIDGED TITANOCENE DICHLORIDE (1,3-BIS(ETA-5-CYCLOPENTADIENYL)-1,1,3,3-TETRAMETHYLDISILOXANE)-TITANIUM(IV) DICHLORIDE [J].

CURTIS, MD ;

DERRICO, JJ ;

DUFFY, DN ;

EPSTEIN, PS ;

BELL, LG .

ORGANOMETALLICS, 1983, 2 (12) :1808-1814

← 1 2 3 4 →