78105-60-9Relevant articles and documents
Phosphinoalkylnitriles: Synthesis and coordination behaviour at palladium centres
Pitter, Stephan,Dinjus, Eckhard,Jung, Beate,Go?rls, Helmar
, p. 934 - 946 (2007/10/03)
Phosphinoalkylnitriles R2P-(CH2)n-CN {R = isopropyl (ipr), phenyl (ph), cyclohexyl (chex), n = 3, 6, 10} have been prepared starting from the corresponding secondary phosphines in an easy three step synthesis. All new compounds were characterized by their 1H-, 13C and 31P NMR data. Some of these new P, N ligands were used to prepare complexes [{R2P-(CH2)n-CN}2PdCl2] which were also identified by their NMR data. In addition the crystal structures of three derivatives, [{ipr2P-(CH2)3-CN} 2PdCl2] 7a, [{ph2P-(CH2)3-CN}2PdCl2] 7b and [{ph2P-(CH2)6-CN}2PdCl2] 8b were determined by X-ray analysis. The coordination mode of the phosphinoalkylnitriles in these complexes was found to be P-bonded resulting in a trans configuration. Palladium catalysts with 5a as ligund show high activies in the co-oligomerization of butadiene and carbon dioxide. The δ-lactone 11a is formed under very mild conditions.
Synthesis and characterization of a series of trans->2M' (M = Mo; X = NH or M = Cr, W; X = CH2; M' = Ni, Cu, Zn) complexes and the X-ray crystal structure of trans->2Cu
Gray, Gary M.,Takada, Naota,Jan, Minjane,Zhang, Hongming,Atwood, J.L.
, p. 53 - 67 (2007/10/02)
A series of heterotrinuclear complexes of the type trans->2M' (M = Mo; X = NH; M' = Ni, Cu or M = Cr, W; X = CH2; M' = Ni, Cu, Zn) have been synthesized either by the reactions of coordinated P-donor ligands (X = NH) or by the sequential reactions of the metals with the free ligands (X = CH2).Spectroscopic studies of the complexes (IR, UV-VIS and multinuclear NMR) indicate that their solution conformations are quite different from those of the previously studied trans->2M' (R2 = OCH2CMe2CH2O, Ph2; M' = Ni, Cu) complexes.These studies also indicate that the coordination geometries of Ni2+ and Zn2+ in these complexes are different.The Ni2+ ion is in a square planar coordination environment while the coordination geometry of the Zn2+ is most likely tetrahedral.The molecular structure of trans->2Cu has been determined.The complex crystallizes from a THF-methanol mixture in the triclinic space group P1 (crystal data: a 6.613(2), 9.725(4), c 18.725(7) Angstroem; α 93.65(3), β 99.07(4), γ 102.85(4); Z = 1).The Cu2+ is coordinated to two o-salicylaldiminate groups in a trans square planar geometry, and the Mo is coordinated to five carbonyls and a P-donor group in a distorted octahedral geometry.The conformation of the bridging group in the complex is very different from that observed in other heterotrinuclear complexes due to the lack of phenyl-bis(o-salicylaldiminato)metal stacking interactions.
Role of Through Space 2p-3d Overlap in the Alkylation of (ω-N,N-Dimethylaminoalkyl)diphenylphosphines and in the Alkaline Decomposition of Related Quaternary Phosphonium Salts
McEwen, William E.,Smith, Joanne H.,Woo, Edward J.
, p. 2746 - 2751 (2007/10/02)
A series of (ω-N.N-dimethylaminoalkyl)diphenylphosphines has been prepared and subjected to reaction with benzyl chloride in benzene-methanol (60:40 v/v) at 31.0 +/- 0.1 deg C.Each of quaternization reactions was found to follow the second-order rate law,
