16787-34-1

Upstream product

• 104090-29-1 {((CH₃)3P)2Ni(CH₂C(CH₃)2C₆H₄)} 
• 104090-29-1 Ni(CH₂C(Me)2-o-C₆H₄)(PMe₃)2 
• 13463-39-3 tetracarbonyl nickel 
• 594-09-2 trimethylphosphane 

Relevant academic research and scientific papers

Pyrrolyl, hydroxo, and carbonate organometallic derivatives of nickel(II). Crystal and molecular structure of [Ni(CH2C6H4-o-Me)(PMe 3)(μ-OH)]2·2,5-HNC4H 2Me2

Pyrrolyl-organometallic derivatives of Ni(II), of composition Ni(R)(NC4H2X2)(PMe3)2 (X = H (1a-5a), 2,5-Me (1b-5b); R = Me (1), CH2SiMe3 (2), CH2CMe3 (3), CH2CMe2Ph (4), 2,4,6-C6H2Me3 (5)), have been obtained by treatment of the complexes trans-Ni(R)Cl(PMe3)2 with the sodium salt of the pyrrolyl ligand. The action of wet CO2 upon solutions of 2a,b provides the carbonate Ni2(CH2SiMe3)2(CO 3)(PMe3)3 (10), possibly through the intermediacy of a dimeric hydroxide, [Ni(CH2SiMe3)-(PMe3)(μ-OH)]2 (6). Hydroxides related to 6, [Ni(R)(PMe3)(μ-OH)]2 (R = CH2CMe2Ph (7), CH2C6H5 (8)), have been produced by reacting the corresponding monoalkyl chlorides with powdered NaOH and have been shown to react with CO2 with formation of carbonates analogous to 10, Ni2R2(CO3)(PMe3)3 (R = CH3 (9), CH2SiMe3 (10), CH2C6H5 (11), C6H5 (12)). The hydroxides readily form solid-state adducts, when crystallized in the presence of pyrrole or 2,5-dimethylpyrrole. NMR studies show these adducts are completely dissociated in solution, but an O?H-N hydrogen-bonding interaction exists in the solid state, as revealed by the results of an X-ray structural determination, carried out with the o-methylbenzyl complex [Ni(CH2C6H4-o-Me)-(PMe 3)(μ-OH)]2·2,5-HNC4H 2Me2. The crystals are monoclinic, space group C2/c, with cell dimensions a = 15.598 (6) A?, b = 12.655 (7) A?, c = 17.705 (6) A?, β = 111.72 (4)°, V = 3243.7 A?3, and Z = 4. The structure consists of dinuclear Ni2(η1-CH2C6H 4-o-Me)2(PMe3)2(μ-OH)2 molecules and of 2,5-dimethylpyrrole molecules of crystallization, all of them showing crystallographic 2-fold symmetry. The Ni dimers have dihedral geometry, with the Ni atoms situated in a distorted square-planar environment.

Synthesis and X-ray Structure of the Nickelabenzocyclopentene Complex . Reactivity Toward Simple, Unsaturated Molecules and the Crystal and Molecular Structure of the Cyclic Carboxylate

Facile cyclometalation to the nickelacyclopentene complex (1) occurs upon alkylation of NiCl2(PMe3)2 with 2 equiv of Mg(CH2CMe2Ph)Cl, in the presence of traces I(1-).Compound 1 has been fully characterized by spectroscopic and X-ray studies.Its