30 research outputs found
Reversible carbonylation of cationic palladium 2,6-bis(dimethylamino)-methyl)pyridine complexes: the first X-ray structure of an aroyl palladium complex
No full textParamagnetic Silica Particles: Synthesis and Grafting of a Silane Coupling Agent Containing Nickel Ions onto Colloidal Silica Particles
No full textThe unusual solid state structures of pentasubstituted bis(cyclopentadienyl)zinc compounds: Bis(pentamethylcyclopentadienyl)zinc and Bis(tetramethylphenyl- cyclo-pentadienyl)zinc
No full textThe replacement of all hydrogen atoms of Zn(C5H5)2 by methyl groups causes a major change in the solid state structure. Whereas Zn(C5H5)2 is polymeric in the solid state, an X-ray diffraction study of Zn(C5Me5)2 has shown it to be a monomer, with one 5- and one 1-bonded ring. The crystals are monoclinic, space group P21/n with unit cell a 8.70(4), b 7.88(5), c 14.64(8) Å, 102.1(2)°, Z = 2. The structure is disordered.
The crystal structure of Zn(C5Me4Ph)2 has been studied in more detail. The compound crystallizes in the monoclinic space group P21/a, with unit cell a 8.086(1), b 17.640(2), c 8.823(1) Å, 93.70(2)°, Z = 2. Anisotropic full-matrix least-squares refinement with 1693 observed reflections and 158 parameters converged at RF = 0.0621. This compound is also monomeric. The zinc atom is disordered between two equivalent sites. In each site it is 1-bonded to one ring and 5 to the other
Self-assembling of bis-ortho chelated diaminobenzyl- (NC'N) and butyl-lithium units to give 2:2 mixed alkyllithium aggregates (NC'N)Li2Bu2Li2(NC'N) with a ladder structure
No full textThe lithiation reaction of 1,3-bis(dimethylaminomethyl)-4,6-dimethyl-2-(trimethylsilylmethyl)benzene 2 with BunLi (2 equiv.) affords a unique aggregated species 3 of the parent lithiated compound and BunLi in a 2:2 ratio in which the bridging carbon atoms and the lithium atoms are arranged in an unprecedented ladder-type arrangement with exclusively bridging alkyl groups
High-presure NMR and ab initio computational studies on the insertion mechanism of carbon monoxide into cationic monoorganopalladium(II) complexes bearing tridentate nitrogen donor ligands
No full textInsertion of norbornene into Aryl-Palladium(II) bonds : Mechanistic Apects of the subsequent C-H Activation
No full textCoordination of a Ru(II)-Complex to a Tetrafunctional P-ligand: a Model for Ru-P Carbosilane dendrimers
No full textOrganophosphine-functionalised carbosilane (CS) dendrimers (5, 6) can be synthesised in high yield. Furthermore, new kinds of metallodendrimers (7, 8) are obtained by coordination of a Ru(II) complex, containing the tridentate triamine ligand: 2, 6-bis[(dimethylamino)methyl]pyridine, to these P-functionalised CS-dendrimers
The formation of a mixed organolithium aggregate Li4R2nBu2 during the heteroatom assisted lithiation of 1,3-bis(dimethylaminomethyl)-2,4,6-trimethylbenzene(R=2,6- (CH2NMe2)2-3,5 Me2C6HCH2)
No full textSynthesis and structural studies of ionic mono-organopalladium(II) complexes with tridentate nitrogen donor ligands
No full textSynthesis of Periphery Functionalized Dendritic Molecules using Polylithiated Dendrimers as Starting Material
No full textA general method for the functionalization of Si-Cl terminated carbosilane dendritic molecules via organolithium or organomagnesium reagents is described. Quantitative exchange of the bromine atoms of 4-bromophenyl-functionalized dendrimers affords polylithiated species that are valuable starting materials for further functionalization, e.g., into pyridyl alcohols. The latter were successfully applied as catalyst precursors in a ruthenium-mediated ring-closure metathesis reaction
