Showing papers in "Journal of Organometallic Chemistry in 1990"

TL;DR: In this article, the authors used 13 C NMR using labelled carbon dioxide in order to determine the origin of the formate and achieved a maximum quantum yield of 15% for the mixed [Ru(bpy) 3 ] 2+ / cis -[Ru( bpy) 2 (CO)(H)] + system.

TL;DR: In this paper, the nucleophilic addition of dialkylzincs to aldehydes in hydrocarbon solvents is markedly accelerated by the presence of a catalytic amount of a β-dialkylamino alcohol.

TL;DR: In this article, the crystal and molecular structures of the indenyl ring-junction carbons are reported, along with a discussion of the correlation between hapticity and the 13C chemical shift.

TL;DR: In this article, a 1.1-disodio-TPSCp was obtained from the reaction of 1,1-dichloro-2,3,4,5-tetraphenyl-1-silacyclopentadiene with sodium.

TL;DR: In this article, the ligand trisodium-m -sulfonatophenyl) phosphane (TPPTS) was synthesized from readily accessible precursor compounds and were isolated pure by gelpermeation chromatography.

TL;DR: Gel-permeation chromatography is recognized as the most reliable method for the purification of aqueous solutions of the ligand tris(sodium-m -sulfonatophenyl)phosphane (TPPTS) and its industrially important rhodium complex derivatives (hydroformylation; Rhone-Poulenc/Ruhrchemie process).

TL;DR: The reaction of substituted benzonitrile derivatives with LiN(SiMe3)2 or NaN(NiMe3)-benzamidinates yields N,N′-bis(trimethylsilyl)benzamide anions as mentioned in this paper, which can be regarded as steric equivalents of η5-C5H5.

TL;DR: The structure of a doubly cyclometallated Pd(acac) complex of 2,3-diphenylpyrazine has been determined by an X-ray diffraction study (R = 0.039) as discussed by the authors.

TL;DR: In this article, the acyl complex PdCl(COR)(PPh3)2 (R = Et, n-Hex), isolated during the course of hydro-carbalkoxylation reactions catalyzed by the precursor system PdCL2(PPh 3)2-PPh4 (95°C, P(CO) 100-120 atm; Pd: P = 1:3-4), in ethanol or higher alkanols as solvents, reacts with an alkanol R'OH in the presence of added P

TL;DR: In this paper, the carbyne iridium cations were obtained by transposing [IrCl(C 8 H 14 ) 2 ] 2 and PPr 3 i with HCCSiPh 3 to give [IrH(C 2 SiPh 3 )Cl(PPr 3 I 2 ] (IXe).

TL;DR: In this article, Co I serves as a catalyst in the co-cyclization of 1,2-diethynylarenes (in turn derived by Pd II -catalyzed alkynylation of the corresponding haloaromatics) with alkynes to furnish substituted biphenylenes and Ni 0 is used to dimerize the latter to the corresponding tetrabenzocyclooctatetraenes.

TL;DR: In this paper, the chemistry and structural aspects of ortho-substituted-arylcoppers and -cuprate compounds in which the orthosubstituents either interfere sterically with the C-, O-to-copper bonding or have a potentially coordinating heteroatom are described.

TL;DR: In this paper, the structure of 1 has been determined and the crystal structures are monoclinic, space group P21/c, with a 9.708(1), b 16.195(2), c 19.869(5) A, β 95.75(2)°, V 3108(1) A3, Z = 4, and Dcalc 1.49 g cm−3.

TL;DR: The diphosphinoamines react with group 6 metal carbonyl derivatives to yield the cis-chelate complexes [M(CO)4(L-PP′).

TL;DR: In this article, the triple-decker sandwich cation with pentaarsacyclopentadienyl ligand was characterized by X-ray diffraction studies. But the results were limited to the case of 30 valence electrons.

TL;DR: In this paper, the reduction of the nickel(II) chloride complexes [NiCl 2 (dippm)] with one equivalent of potassium naphthalenide in tetrahydrofuran (THF) gave the corresponding nickel(I) chlorides, and the bidentate phosphine-Ni 0 intermediates formed by reduction of Ni II chlorides with an excess of magnesium, also gave the mono-chlorides 2a and 2b on reaction with equal molar amounts of 1a and 1b, respectively.

TL;DR: New tripod ligands containing pyridin-2-yl (py), N-methylimidazol-2 -yl (mim), and pyrazol-l-y1 (pz) groups have been made by addition of 2-bromopyridine todeprotonated (py)(mim)CH2 or (mims)2CH2 to form (py)2(mim)-CH and (poly(poly)-CH2) as discussed by the authors.

TL;DR: In this article, the structure of (η-C6Me6)Os(CO)(cyclohexyl)2 (4b) determined by single crystal X-ray diffraction is reported.

TL;DR: Herrmann as discussed by the authors translated and slightly expanded version of the article entitled "100 Jahre Metallcarbonyle: Eine Zufallsentdeckung macht Geschichte" (4th Essay on Organometallic Chemistry) that appeared in “Chemie in unserer Zeit” (Weinheim/Germany), Vol. 22 (1988), p. 113-122.

TL;DR: In this paper, the rate determining step in the Rh and I − catalysed conversion of methanol into acetic acid and of methyl acetate into anhydride, is second order overall, first order in both complex and methyl iodide.

TL;DR: In this article, it is shown that high-valent organorhenium oxides function as very effective catalysts in both olefin metathesis (heterogeneous catalysis) and in olefielfacetation (homogenous catalysis), and the first similarities in the chemistry of their organic compounds are uncovered, while marked differences cannot be neglected.

TL;DR: The solution structure of an η 1 -allylpalladium(IV) complex formed by oxidative addition of bromopropene to a palladium(II) metallacyclic species has been determined by 1 H NMR spectroscopy as mentioned in this paper.

TL;DR: In this article, the RF value of 1,3Si2C5H3 ring-centroids was improved to 5.3% based on 6173 observed reflections, where the silyl-substituted part of each ring is tilted away from the samarium atoms such that individual SmC distances vary from 2.698(5) to 2.806(5).

TL;DR: In this article, the palladacyclopentadienes (dad) PdCE, CECE, C E (2a-h) and C H 3 were obtained in small yield.

TL;DR: Cp 2 LuCH 2 SiMe 3 (THF) reacts with HPPh 2 and HAsPh 2 to give Cp 2 LLuPPh 2 (ThF) (2 ) and Cp2 LLuAsPh2 (TH F) (3 ) respectively.

TL;DR: In this article, cyclopalladation of the 4,4-dimethyloxazoline derivative of pivalic acid has been used to activate one of the methyl groups.