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Showing papers in "Organometallics in 1997"


Journal ArticleDOI
TL;DR: In this paper, the rhodium(I)-catalyzed conjugate addition of aryl-or 1-alkenylboronic acids to enones was carried out in high yields at 50 °C in an aqueous solvent.

486 citations


Journal ArticleDOI
TL;DR: Nickel(II) dibromide complexes containing para-and unsubstituted aryl α-diimine ligands in combination with modified methylaluminoxane (MMAO) are highly active and efficient catalysts for the oligomerization of ethylene to linear α-olefins.

383 citations


Journal ArticleDOI
TL;DR: In this article, the α-diimine ligand ArNC(me)C(Me)NAr (Ar = 2,6-C6H3-iPr2) reacts with Pd(OAc)2 in the presence of HBF4·Et2O, or [Pd(MeCN)4]-BF4] in the absence of acid, to give ethylene polymerization catalysts.

339 citations


Journal ArticleDOI
TL;DR: The intermolecular interactions between X−H groups (X = C, N, and O) and metal atoms in crystalline organometallic complexes have been investigated in this article.

292 citations



Journal ArticleDOI
TL;DR: In this article, the amino-substituted cyclopentadienyl−chromium derivatives of chromium have been isolated and their chemical behavior lends support to a metallacyclic mechanism for the Cr-catalyzed selective trimerization of ethylene to 1-hexene.

259 citations


Journal ArticleDOI
TL;DR: In this paper, the synthesis and properties of two soluble, weakly coordinating derivatives of the tetrakis(perfluoroaryl)borate anion B(4-C6F4TBS)4 and B( 4-C 6F4TIPS)4- (TBS = tert-butyldimethylsilyl and TIPS = triisopropyl silyl) are reported.

256 citations



Journal ArticleDOI
TL;DR: In this paper, the synthesis and structures of aluminum complexes are described, and steric interactions between the R and R' groups influence the R'-N-Al angle and hence the steric environment at aluminum.

226 citations


Journal ArticleDOI
TL;DR: In this article, an efficient synthesis of the group 4 dibenzyl complexes Me2Si(η5-Me4C5)(tBuN)MR2 (CGCMR2), where R = CH2Ph; M = Ti (1), Zr (2)), was reported.

205 citations


Journal ArticleDOI
TL;DR: A series of bis-chelated palladium(II) complexes [Pd(N-N)2][X]2 (n-N = 2,2-bipyridine (bipy), 1,10-phenanthroline (phen), and their substituted derivatives; X = PF6-, BF4-, OTf-, OTs-) has been synthesized and completely characterized both in the solid state and in solution as discussed by the authors.

Journal ArticleDOI
TL;DR: The emission spectra of rigid-rod, conjugated polymeric complexes of gold(I) of the type [−Au−C⋮C−Ar−CµC−C µAuµL−Lµ]x, where Ar = aryl and L−L = diphosphine or bis(isocyanide) ligands are reported for the first time, along with corresponding spectra for analogous mononuclear and binuclear alkynylgold (I) model complexes as discussed by the authors.

Journal ArticleDOI
TL;DR: In this article, the influence of chiral cooperativity in the rhodium-catalyzed asymmetric hydroformylation of styrene has been investigated, showing that chirality at both the chiral ligand bridge and the axially chiral biphenyl and binaphthyl substituents revealed a remarkable effect on the selectivity of the catalysts.

Journal ArticleDOI
TL;DR: In this article, a procedure for generating the ruthenium hydride complex Ru(H)(H2)Cl(PCy3)2 in 95% yield is presented.

Journal ArticleDOI
TL;DR: In this article, the synthesis, structures, bonding, and reactivity of neutral (Ox)2MR2 and cationic (O2MR+ zirconium and hafnium alkyl complexes which contain substituted 8-quinolinolato ligands are described.

Journal ArticleDOI
TL;DR: The chemistry of electrophilic zirconium complexes stabilized by a sterically open diamide ligand has been studied in this paper, where the treatment of Me2Si(NLiCMe3)2 with ZrCl4(THF)2 is shown to yield the same result.

Journal ArticleDOI
TL;DR: In this article, the structures of MCp (M = Li, Na, K; Cp = cyclopentadienyl), some of the most important precursors in synthetic organometallic chemistry, have been investigated.

Journal ArticleDOI
TL;DR: In this paper, a bifunctional -Me4Cp⌒phenolate- ligand and the efficient synthesis of the corresponding TiIV and ZrIV complexes were reported.

Journal ArticleDOI
TL;DR: In this article, the first values of nickel-fluorine distances at square-planar Ni(II) have been obtained, with a Ni-F distance of 1.836(5) A and Ni-C distance of 0.878(7) A.

Journal ArticleDOI
TL;DR: The cyclometalation reactions of benzylidenebenzylamines, -anilines, and -propylamine with palladium acetate have been studied in toluene solution as mentioned in this paper.

Journal ArticleDOI
TL;DR: In this paper, the synthesis of ruthenium carbenes by the reaction of a Ru(0) compound or Ru( 0) precursors with dihalo compounds is reported.

Journal ArticleDOI
TL;DR: In this article, the molecular structure of (+)-(R)-[η5:η1-(Ind)SiMe2-(S)-NCHMePh]TiCl2 (4) has been determined by X-ray crystallography.

Journal ArticleDOI
TL;DR: In this article, the molecular structure of dilithium amido−cyclopentadienide Li[Y(η5:η1-C5Me4SiMe2NCH2CH2OMe)2] was determined by single-crystal X-ray structural analysis, which showed it to exhibit both a pseudotetrahedral yttrium as well as a tetrahedral lithium center.

Journal ArticleDOI
TL;DR: In this article, the B−H stretching vibrations of the square-planar and trigonal-bipyramidal structures of rh(μ-Cl) 2 with KTpiPr or TlTpiPr were identified.

Journal ArticleDOI
TL;DR: In this paper, the reaction of 1,4-diethynylbenzene with cis-RuCl2(dppe)2 and iodoferrocene gave the homobimetallic systems Cl(dpp)2RuC⋮CC6H4C⊆CRu(dPP)2Cl (2) and (η 5-C5H5)Fe(η5-C4H5H4)Cl(3), respectively, were used as key starting products for access to the heterotrimet

Journal ArticleDOI
TL;DR: Nickel(II) complexes with N-heterocyclic carbenes are accessible through substitution of triphenylphosphine in NiX2(PPh3)2 (X = Cl, Br) or by in situ deprotonation of the corresponding azolium salts with Ni(OAc)2 as the starting material.

Journal ArticleDOI
TL;DR: In this article, it was shown that the faster the photocatalyzed reduction of CO2 to CO, the higher the quantum yield of CO formation, based on the assumption that the process gives CO quantitatively, was similar to the actually observed amount under various conditions.

Journal ArticleDOI
TL;DR: The first ferrogallyne was shown to be the first triisopropylphenylnaphycloside as discussed by the authors, showing that the triisOPropylnophyclohexohexophylnope can be obtained from disodium tetracarbonylferrate, Na2[Fe(CO)4], with [2,6-bis[2,4,6,6]-gallium dichloride, (Mes*2C6H3)GaCl2 (M.

Journal ArticleDOI
TL;DR: In this article, a family of chiral, discrete, nanoscale-sized supramolecular cages are prepared, via self-assembly and noncovalent interactions from the tridentate ligand 1,3,5-tris[(4-pyridyl)ethynyl]benzene and [(R)-(+)-BINAP]PdII and -PtII bis(triflates).

Journal ArticleDOI
TL;DR: In this paper, the authors have analyzed the nature of the metal−CO interactions using the CDA method and derived the equilibrium geometries, vibrational frequencies, and metal-CO bond dissociation energies of the title compounds.