Showing papers in "Journal of Organometallic Chemistry in 2006"

TL;DR: In this article, Cationic rare earth metal alkyl species, generated by the treatment of mono(cyclopentadienyl) bis(alkyl) rare earth complex with 1 equiv. of a borate compound such as [Ph3C][B(C6F5)4], act as an excellent catalyst for the polymerization and copolymerization of various olefins.

TL;DR: This review provides a substantial knowledge on the action mode of organotins in cancer chemotherapy, and the coordinating ability of organotin compounds towards DNA and cancer cells is discussed.

TL;DR: In this paper, a review summarized the literature and own data on the parent organotin(IV) compounds and complexes formed with biologically active ligands and showed that the parent compounds can be formed by biologically active compounds.

TL;DR: In this paper, a systematic analysis of the bond between transition metals and N-heterocyclic carbene (NHC) ligands is presented, and the σ and π-contributions in a series of complexes in which the formal d-electron count ranges from d0 to d10.

TL;DR: In this article, it was shown that the preferred closed-shell electron structures, such as those in typical high-symmetry 18-electron systems, are driven both by the bonding contributions to the centre and by the kinetic energy (nodal-structure) terms in the ligand subsystem, Ln.

TL;DR: In this article, a series of monocyclic planar inorganic compounds have been optimized at the B3LYP/6-311+G * level, and the NICS profiles calculated in the perpendicular direction of each ring show that the analyzed compounds can be classified in three groups according to their aromatic, non-aromatic or antiaromatic character.

TL;DR: In this paper, the transmetalation step of the Suzuki-Miyaura cross-coupling between aryl groups is analyzed by means of DFT calculations with the Becke3LYP functional.

TL;DR: In this article, five imidazol(in)ium-2-carboxylates bearing cyclohexyl, mesityl, or 2,6-diisopropylphenyl substituents on their nitrogen atoms were prepared from the corresponding N-heterocyclic carbenes by reaction with carbon dioxide.

TL;DR: An overview of the results of organotin-NSAIDs interactions is given in this paper, where several organotin complexes with NSAIDs, derivatives of the carboxylic acid family and oxicam family have been synthesized and characterized by spectroscopy and X-ray crystallography at the University of Ioannina.

TL;DR: In this article, N-heterocyclic carbene (NHC) ligands are metalated with [Ir/Rh(COD)2Cl]2 to give rhodium(I/III) and iridium(I) mono-and biscarbene substituted complexes.

TL;DR: A series of nickel (II) complexes were synthesized and characterized by elemental and spectroscopic analysis as well as by single-crystal X-ray crystallography.

TL;DR: In this article, the rhodium-catalyzed addition reactions of sodium tetraphenylborate and arylboronic acids to nitriles, ketones, and imines were examined.

TL;DR: The phoban-indenylidene complex is a robust catalyst for self-metathesis and ethenolysis reactions of methyl oleate as mentioned in this paper, which can be accessed from simple precursors and should give rise to more economical metathesis processes.

TL;DR: In this paper, the reaction of anhydrous FeBr2 with two equivalents of in situ generated anionic aryloxo-functionalized N-heterocyclic carbene [NaO-4,6-di,C(CH3)3-C6H2-2-CH2{C(NCHCHNR)}] with two bis-ligand Fe(II) complexes was investigated.

TL;DR: In this article, a saturated Pd-N-heterocyclic complex was immobilized on an amorphous silica, and it was shown that the complex acted only as a precatalyst to highly active Pd species in Mizoroki-Heck reactions.

TL;DR: In this paper, the crystal structures of Di-n-butyltin compounds 1, 4, 5 and 6 were determined and the in vitro cytotoxic activity of compound 5 against WIDR, M19 MEL, A498, IGROV, H226, MCF7 and EVSA-T human tumor cell lines is reported.

TL;DR: In this article, the development of metal/linked-binol complexes and their applications in direct catalytic asymmetric Mannich-type reactions of hydroxyketones are reviewed.

TL;DR: A totally different synthetic approach, which can be viewed as the addition of a 1,3-diazaallyl anion to a compound featuring two leaving groups (hereafter named "di-electrophile") is reported, which has been expanded to the preparation of protonated cyclic amino alkyl carbenes and amino thio carbene anions.

TL;DR: The majority of reports of ligand modification for catalysis have followed from systematic variation of the spatial demands of the catalyst as mentioned in this paper, and the focus of this review is to highlight selected major contributions to the area of substituent controlled electronic-tuning of some well known chiral ligands and the subsequent effect of these changes during asymmetric catalysis.

TL;DR: In this article, the Kumada-Corriu coupling reaction between phenylmagnesium chloride and 4-chloroanisole was investigated, and it was shown that NCN+ bromide or tetrafluoroborate can be used as catalytic precursors.

TL;DR: In this paper, a renaissance of cyclopentadienyl molybdenum oxides and their tricarbonyl precursors is starting, both with respect to synthetic access ways and to applications as oxidation catalysts in homogeneous and heterogeneous phase.

TL;DR: In this paper, a terdentate Schiff base N -[(pyrroyl)methylidene]- N ′-tosylbenzene-1,2-diamine (H 2 L 2 L 1 ) and N -(2-hydroxyphenyl)metyl-metylidenes]- N Ã −-bensene- 1,2 -diamines (H 1 L 2 ) have been synthesized by adding a ligand to a methanol suspension of the corresponding diorganotin(

TL;DR: In this paper, four new iridium(III) complexes 1-4, with 1,3,4-oxadiazole derivative as cyclometalated ligand for the first time, have been synthesized and structurally characterized by NMR, EA, MS and X-ray diffraction analysis.

TL;DR: New pyridinium-tagged ruthenium catalysts have been synthesized to perform olefin metathesis in several media including both organic and aqueous solvents and room temperature ionic liquids (RTILs) as discussed by the authors.

TL;DR: In this paper, a ruthenium carbene (R carbene) was used for the transfer hydrogenation of ketones, achieving turnover frequencies up to 346h −1 for reduction of acetophenone.

TL;DR: In this article, the Pt-bis N-heterocyclic carbene (NHC) complexes with an ortho-xylyl group were described and structurally and spectroscopically characterised.

TL;DR: In this paper, an SR modified Au cluster with a sub-nanometer size, Au11(S-4-NC5H4)3(PPh3)7 (1), has been synthesized by NaBH4 reduction of Au (S-py) or by reacting [Au9(Pph3)8](NO3)3 with HS-4py in good yield.

TL;DR: In this article, a trimethylsilylation of a wide variety of alcohols, including primary, allylic, benzylic, secondary, hindered secondary, tertiary, and phenols with hexamethyldisilazane on the surface of silica gel dispersed with LiClO4 in room temperature at few minutes in excellent yields under neutral conditions is reported.

TL;DR: In this article, the electronic effect of a p-substituent (X) on cross-coupling catalysts was investigated, and an interesting correlation between the electron-donating nature of the aryl substituent and catalytic activity and also initial decomposition temperature of the complexes 5 and 6 was observed.