Weakly-coordinating anions stabilise the unprecedented monovalent and divalent η-benzene nickel cations [(η-C5H5) Ni(η-C6H6) Ni(η-C5H5)]2+ and [Ni(η-C6H6)2]2+

被引：37

作者：

Priego, JL ^{[1
]}

Doerrer, LH ^{[1
]}

Rees, LH ^{[1
]}

Green, MLH ^{[1
]}

机构：

[1] Univ Oxford, Inorgan Chem Lab, Oxford OX1 3QR, England

来源：

CHEMICAL COMMUNICATIONS | 2000年 / 09期

关键词：

D O I：

10.1039/b001190h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nickelocene in benzene reacts with the Bronsted acid H2O-B( C6F5)(3) to give the salt [(eta-C5H5) Ni(eta-C6H6) Ni(eta-C5H5)][ B-3(mu-O)(3)(C6F5)(5)] which is the first example of a triple-decker nickel sandwich with a bridging eta-benzene ligand; the borate anion is also unprecedented; treatment of Ni(eta-C5H5)(2) with Brookhart's acid [H(OEt2)(2)][B(3,5(CF3) 2C6H3)(4)] in benzene gives the paramagnetic bis(eta-benzene) nickel derivative {[Ni(eta-C6H6)(2)][B(3,5(CF3) 2C6H3)(4)]2 . Ni(eta-C5H5)(2)} in which nickelocene is present as a molecule of crystallisation.

引用

页码：779 / 780

页数：2

共 20 条

[1] COMPLETION AND REFINEMENT OF CRYSTAL-STRUCTURES WITH SIR92 [J].

ALTOMARE, A ;

CASCARANO, G ;

GIACOVAZZO, C ;

GUAGLIARDI, A .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1993, 26 (pt 3) :343-350

[2] Cationic Group 4 metallocene complexes and their role in polymerisation catalysis: The chemistry of well defined Ziegler catalysts [J].

Bochmann, M .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1996, (03) :255-270

[3] Equilibria in the B(C6F5)3-H2O system:: synthesis and crystal structures of H2O•B(C6F5)3 and the anions [HOB(C6F5)3]- and [F5C6)3B(μ-OH)B(C6F5)3]- [J].

Danopoulos, AA ;

Galsworthy, JR ;

Green, MLH ;

Cafferkey, S ;

Doerrer, LH ;

Hursthouse, MB .

CHEMICAL COMMUNICATIONS, 1998, (22) :2529-2530

[4] Oxidation of [M(η-C5H5)2], M = Cr, Fe or Co, by the new Bronsted acid H2O•B(C6F5)3 yielding the salts [M(η-C5H5)2]+A-, where A- = [(C6F5)3B(μ-OH)B(C6F5)3]- or [(C6F5)3BOH•••H2OB(C6F5)3]- [J].

Doerrer, LH ;

Green, MLH .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1999, (24) :4325-4329

[5] THE STRUCTURE OF MU(ETA-CYCLOPENTADIENYL)-BIS[ETA-CYCLOPENTADIENYL)NICKEL(II)] TETRAFLUOROBORATE AT 190 AND 295 K [J].

DUBLER, E ;

TEXTOR, M ;

OSWALD, HR ;

JAMESON, GB .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1983, 39 (OCT) :607-612

[6] X-RAY STRUCTURE-ANALYSIS OF TRIPLE-DECKER SANDWICH COMPLEX TRIS ETA-CYCLOPENTADIENYL)DINICKEL TETRAFLUOROBORATE [J].

DUBLER, E ;

TEXTOR, M ;

OSWALD, HR ;

SALZER, A .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1974, 13 (02) :135-136

[7] ELECTRON SELF-EXCHANGE OF THE DICYCLOPENTADIENYLNICKEL(II,III) COUPLE IN DICHLOROMETHANE [J].

GRIBBLE, JD ;

WHERLAND, S .

INORGANIC CHEMISTRY, 1990, 29 (06) :1130-1132

[8]

KINDER HH, 1968, J ORGANOMET CHEM, V12, pP18

[9] CYCLOTRIMERIZATION OF ETHYNE ON THE COMPLEX FRAGMENT [(ETA(1)-TBU(2)PCH(2)PTBU(2))NI-0] WITH FORMATION OF AN ETA(6)-BENZENE-NICKEL(0) COMPLEX [J].

NICKEL, T ;

GODDARD, R ;

KRUGER, C ;

PORSCHKE, KR .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1994, 33 (08) :879-882

[10] CRYSTAL AND MOLECULAR-STRUCTURES OF PI-TOLUENE COMPLEXES OF (C6F5)2CO AND (C6F5)2NI [J].

RADONOVICH, LJ ;

KLABUNDE, KJ ;

BEHRENS, CB ;

MCCOLLOR, DP ;

ANDERSON, BB .

INORGANIC CHEMISTRY, 1980, 19 (05) :1221-1226

← 1 2 →