29938-21-4Relevant academic research and scientific papers
Tri- and tetracoordinate copper(I) complexes bearing bidentate soft/hard SN and SeN ligands based on 2-aminopyridine
Oeztopcu, Oezguer,Mereiter, Kurt,Puchberger, Michael,Kirchner, Karl A.
experimental part, p. 7008 - 7021 (2011/09/13)
The coordination properties of the EN ligands N-(2-pyridinyl)amino- diphenylphosphine sulfide, N-(2-pyridinyl)amino-diisopropylphosphine sulfide, N-(2-pyridinyl)amino-diphenylphosphine selenide, N-(2-pyridinyl)amino- diisopropylphosphine selenide towards copper(i) precursors CuX (X = Br, I), [Cu(IPr)Cl] (IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), and [Cu(CH3CN)4]PF6 were studied. Treatment of CuX with EN ligands resulted in the formation of tricoordinate complexes of the type [Cu(κ2(E,N)-EN)X]. The reaction of [Cu(IPr)Cl] with EN ligands, followed by halide abstraction with AgSbF6, afforded cationic tricoordinate complexes [Cu(κ2(S,N)-EN)(IPr)] +, while the reaction of [Cu(CH3CN)4] + with two equivalents of EN ligands yielded tetrahedral complexes [Cu(κ2(E,N)-EN)2]+. Halide removal from [Cu(κ2(S,N)-SN)I] with silver salts in the presence of L = CH3CN and CNtBu afforded dinuclear complexes of the type [Cu(κ2(S,N),μ(S)-SN)(L)]22+ containing bridging SN ligands. With the terminal alkynes HCCC6H4Me and HCCC6H4OMe, complexes of the formula [Cu(κ2(S,N)-SN-iPr)(η2-HCCC6H 4Me)]+ and [Cu(κ2(S,N)-SN-iPr) (η2-HCCC6H4OMe)]+ were obtained. The mononuclear nature of these compounds was supported by DFT calculations. Most complexes were also characterized by X-ray crystallography.
Synthesis and characterization of ruthenium p-cymene complexes bearing bidentate P-N and E-N ligands (E = S, Se) based on 2-aminopyridine
Lackner-Warton, Wolfgang,Tanaka, Shinji,Standfest-Hauser, Christina M.,?ztopcu, ?zgür,Hsieh, Jen-Chieh,Mereiter, Kurt,Kirchner, Karl
scheme or table, p. 3097 - 3102 (2011/01/08)
The syntheses and characterization of a series of cationic of Ru(II) halfsandwich complexes of the types [Ru(η6-p-cymene) (κ2(P,N)-PN)Cl]+ (PN = N-diphenylphosphino-2- aminopyridine, N-di-iso-propylphosphino-2-aminopyridine, 2-[(2-pyridyl)amino] dibenzo[d,f][1,2,3]dioxaphosphepine, N-(diisopropylphosphino)-2,6- diaminopyridine) and [Ru(η6-p-cymene)(κ2(E,N)- EN)Cl]+ (EN = N-(2-pyridinyl)amino-diphenylphosphine sulfide, N-(2-pyridinyl)amino-diisopropylphosphine sulfide, N-(2-pyridinyl)amino- diphenylphosphine selenide, N-(2-pyridinyl)amino-diisopropylphosphine selenide) is described. Some of these complexes were tested as precatalysts for the transfer hydrogenation of acetophenone to give 1-phenyl ethanol.
The co-ordination chemistry of 2-(diphenyIphosphinoamino)pyridine 1
Aucott, Stephen M.,Slawin, Alexandra M. Z.,Derek Woollins
, p. 2559 - 2575 (2007/10/03)
2-(Diphenylphosphinoamino)pyridine, dppap [Ph2PNHpy], and over 40 illustrative examples of its complexes have been prepared. Monodentate, bidentate and bridging co-ordination of the neutral (and bidentate deprotonated ligand) has been demonstrated in a range of palladium, platinum and gold complexes. Ten demonstrative examples have been characterised by single crystal X-ray diffraction. Ph2PNHpy exists as hydrogen-bonded dimer pairs; cis[PtCl(Ph2PNHpy-P,Ar){Ph2PNHpy-P}]Cl packs in hydrogen-bonded infinite chains; cis-[PtCPh2PNpy-.P.A2] and cis-[Pd(Ph2PNpy-P,N)2] are isomorphous. The structures of cis-[Pd(Ph2PNHpy-P,N)2][BF4]2, [AuCl(Ph2PNHpy-.P)], [Pt(C8H12OMe)(Ph2PNpy-P,N)]-H2O illustrating hydrogen-bonding, cis-[PtCl(Ph2PNHpy-P,N)(PMe3)]Cl, cis[PtCl(Ph2PNpy-P,N(PMe3)] and cis-[PtCl(Ph2PNHpy-P,N)(P(OPh)3)]Cl are also reported. The Royal Society of Chemistry 2000.
The synthesis and the coordination characteristics of (phosphinoamino)pyridines
Ainscough,Peterson
, p. 2699 - 2705 (2007/10/04)
The new polydentate ligands 2-(diphenylphosphinoamino)pyridine (PAP), 2-(diphenylphosphinoamino)-4-methylpyridine (4PAP), and 2-(diphenylphosphinoamino)-6-methylpyridine (6PAP) and their thio and seleno derivatives have been synthesized and characterized. Coordination complexes of 4PAP and 6PAP have been isolated, viz., (a) 1:1 metal-ligand complexes MLCl2: (i) M = Co(II), Ni(II), Hg(II), Pd(II), L = 4PAP; (ii) M = Co(II), Ni(II), Pd(II), L = 6PAP; (b) 1:2 metal-ligand complexes, ML2X2·nH2O: Co(4PAP)2Cl2, Ni(4PAP)2Cl2·2H2O, [Ni(4PAP)2](ClO4)2·2H2O, Hg(4PAP)Cl2, Ag(4PAP)2NO3, [Ni(6PAP)2](ClO4)2; (c) [Ni(4PAP)2X](ClO4), X = Cl, Br; (d) 1:3 metal-ligand complexes ML3X2: [Ni(4PAP)3](ClO4)2. Physicochemical studies, including the measurement of conductivity, magnetic moment, solution molecular weight, and infrared, visible, and nuclear magnetic resonance absorption spectra, were performed on the complexes of Co(II) and Ni(II); their structures are discussed.
