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  • 1
    ISSN: 1042-7163
    Keywords: Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reactions of triaminophosphane (R2N)2P-NH2, (R = 1Pr) 1a, with aminodihalogenophosphanes 1Pr2N-PX2, 2a-c [X = CL (a), Br (b), I(c)], in the presence of a base yielded the P-hydrogeno-iminophosphoranyl-halogenophosphanes (R2N)2PH = N-PX-N(1Pr)2 4a-c [X = Cl (a), Br (b), I(c)]. Analogous reactions between 1a and 1b (b: R = c-hexyl) and chloroiminophosphane (Cl-P = N-Mes*, (Mes* = 2,4,6-tBu3C6H2) 6, gave the P-hydrogeno(iminophosphoranyl)-σ2,λ3-iminophosphanes, (R2N)2PH = N-P = N-Mes* 8a and 8b. In solution 8a, 8b eliminated amine, yielding σ2, λ3-iminophosphanyl-substituted 1,3,2,4-diazadiphosphetidines [(R2N)PN(P = N-Mes*)]2, 10a, 10b, and 11 (10a and 10b: cis; 11: trans). The X-ray structure analyses of compounds 4a, 4b, 8a, and 11 are discussed. © 1996 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0009-2940
    Keywords: Aminobis(diorganylamino)phosphanes ; P-Hydrophosphane imine ; Complexation reactions ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aminobis(diorganylamino)phosphanes (R2N)2PNH2 (R = iPr, c-Hex, Ph) (2a-c), were obtained by treatment of the corresponding chlorobis(diorganylamino)phosphanes 1a-c with lithium amide in liquid ammonia. The transition metal phosphane complex (R2N)2(H2N)PNi(CO)3 (3) was prepared by reaction of 2a with tetracarbonylnickel. N-Complexation of 2a with trimethylalane affords the iminophosphorane-alane adduct (R2N)2HP=N(H)AlMe3 (4) by 1,2-H shift from the nitrogen to the phosphorus atom. The corresponding reaction with aluminium trichloride leads to the formation of the salt [(R2N)2HP=N(H)]2AlC12+[AlC14]- (5), in which two iminophosphorane moieties are linked by an AlCl2 bridge. Lithiation of 2a and subsequent reaction with titanocene dichloride result in nucleophilic replacement of one chlorine atom to give the phosphanylamido-substituted titanocene compound (R2N)2P-N(H)Ti(Cl)Cp2 (6a), which rearranges to its P-hydroiminophosphorane tautomer (R2N)2P(H)=NTi(Cl)Cp2 (6b) on gentle heating. No isomerisation was observed in the case of N-borylated aminophosphane (R2N)2P-NH-(9-BBN) (7), obtained by reaction of lithiated 2a with B-Cl-9-BBN. The X-ray structure analyses of compounds 2b, c, 3, 4, 5, and 6a are discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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