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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 104 (1971), S. 653-660 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Preparation of Fluorocyclotriphosphazenes with Phosphazene Side ChainsFluorocyclotriphosphazenes with phosphazene side chains were prolonged by the alternating reactions of hexamethyldisilazane and phosphorus pentachloride (1-8). The compounds formed contain up to six alternating (PN) bonds. Reactions of heptamethyldisilazane and methylamine give 9 and 10. Substitution reactions with the higher ring compounds yield 11-14. The properties of these substances are described and their structures could be likely prooved on the basis of 31P and 19F n. m. r. investigations. The compounds are further characterized by analysis and i. r. spectra.
    Notes: Fluorcyclotriphosphazene mit Phosphazenseitenkette werden durch alternierende Reaktionen mit Hexamethyldisilazan und Phosphorpentachlorid verlängert (1-8). Dabei entstehen Verbindungen, die bis zu sechs alternierende (PN)-Bindungen enthalten (7, 8). Umsetzungen mit Heptamethyldisilazan und Methylamin ergeben 9 und 10. Substitutionen an höheren Ringverbindungen führen zu 11-14. Die Eigenschaften dieser Substanzen werden beschrieben und ihre Struktur durch 31P- und 19F-NMR-Untersuchungen wahrscheinlich gemacht. Die Verbindungen werden weiterhin durch Analysen und IR-Spektren charakterisiert.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 2864-2867 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N-[2,4,4,6,6-Pentafluoro-1,3,5,2,4,6-triazaphosphor(V)inyl-(2)]sulphurimides („N-(Pentafluorcyclotriphosphazo)sulphurimides“)P3N3NH2 (1) reacts with sulfurhalogen Lewis acids such as SF4 and OSCl2 to give P3N3F5 NSF2 (2) and P3N3F5NSO (3). 3 reacts with Pcl5 producing P3N3NSCl2 (4) In the presence of catalytic amounts of pyridine and at 100°, SO2 is eliminated from 3 and P3N3F5NSN- P3N3F5 (5) is formed. The i.r., n. m. r. and mass spectra are reported.
    Notes: P3N3F5NH2 (1) reagiert mit Lewis-aciden Schwefelhalogeniden wie SF4 und OSCl2 zu P3N3SNF52 (2) und P3N3F5NSO (3). Mit PCl5 setzt sich 3 zu P3N3nF5NSCl2 (4) um. In Gegenwart katalytischer Mengen Pyridin erhält man aus 3 bei 100° unter SO2-Abspaltung P3N35NSNP3F5 (5). Die IR-, NMR- und Massenspektren werden mitgeteilt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 415-425 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of an N-silylated Iminophosphine (Phospha(III)azene) with Halogen Compounds of Elements of Main Groups IV and VIIR2N-P=NR (R=Si(CH3)3) reacts with alkyl halides such as CCl4, i-C3H7Br, and C2H5I to give the 1,1-addition products at phosphorus, the iminophosphoranes R2N—P(X)R′= NR (3-5). Reaction of the acidic halides of silicon and tin with the iminophosphine results in the formation of the 1,2-addition products as intermediates; subsequent elimination of trimethylsilylhalide and tin dichloride, respectively, yields the diazaphosphasilacyclobutanes 6 and 7 and the iminodichlorophosphorane 10, respectively. With germanium tetrachloride, the 1,2-addition product 8 is obtained. Halogens react with the iminophosphine to produce the corresponding iminophosphoranes R2N—P(X2)=NR (X=F, Cl, Br, I) (10-13) in quantitative yields. The bromo and iodo derivatives are decomposed below 100°C and eliminate silicon halide to form the diazadiphosphetidines (RN=P(X)—NR)2 (X=Br, I) (14-15). The i. r. and n. m. r. spectra (1H. 29Si. 31P) are briefly discussed.
    Notes: R2N—P=NR (R=Si(CH3)3) reagiert mit Alkylhalogeniden wie CCl4, i-C3H7Br und C2H5J unter 1,1-Addition am Phosphor zu Iminophosphoranen R2N—P(X)R′= NR (3-5). Lewis-acide Halogenide des Siliciums und Zinns setzen sich mit dem Iminophosphin über ein intermediäres 1,2-Additionsprodukt unter Abspaltung von Trimethylsilylhalogenid bzw. Zinndichlorid zu Diazaphosphasilacyclobutanen 6 und 7 bzw. dem. Iminodichlorphosphoran 10 um. Bei der Reaktion des Germaniumtetrachlorids wird das entsprechende 1,2-Additionsprodukt 8 erhalten. Halogene überführen das Iminophosphin quantitativ in die entsprechenden Iminophosphorane R2N—P(X2)=NR (X=F, Cl, Br, J) (10-13). Das Brom- und das Jodderivat zerfallen bereits unterhalb 100°C in Halogensilan und das entsprechende Diazadiphosphetidin-diimid (RN=P(X)—NR)2 (X=Br, J) (14-15). Die IR- und NMR-Spektren (1H, 29Si 31)P) werden kurz diskutiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 123 (1990), S. 67-69 
    ISSN: 0009-2940
    Keywords: Diphosphabicyclobutanes / Valence isomerization ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: DiphosphabicyclobutanesTwo isomeric diphosphabicyclobutanes (5,11) are obtained by treatment of the phosphaalkenes X-P = C(Ph)Tms (1a) and X - P = CTms2 (1b) (X = halogen Tms = trimethylsilyl) with 2, Mg, or Na. Both syntheses proceed by coupling of two phosphaalkene units affording, however, two different diphospha-butadiene intermediates. 4 and 10 readily undergo isomerization reactions to form the diphosphabicyclobutanes. Irradiation of the phosphaalkenes Cp* - P = C(Ph)Tms (12a) and Cp* - P = CTms2 (12b) (Cp* = C5Me5) gives rise to a different reaction pathway. Dimerization of 12a, followed by homolytic cleavage of the Cp* - phosphorus bond and intramolecular recombination produces the butterfly compound 5, whereas homolytic cleavage of the Cp* - element bond in 12 b, followed by rearrangement and intermolecular recombination, affords the diphosphabicyclobutane 11.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 13-16 
    ISSN: 0009-2940
    Keywords: Diphosphines, tetrakis(diisopropylamino) ; Phosphinous anhydrides ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Structure of Bis[bis(diisopropylamino)phosphino]chalcogenidesPhosphorodiamidous chalcogeno-anhydrides [(R2N)2P]2X (R = Me2CH; X = S, Se, Te) (2a-c) have been obtained by insertion of elemental sulfur, selenium, or tellurium into the P-P bond of the corresponding diphosphane (1). The structure of 2a and 2c has been confirmed by an X-ray diffraction.
    Additional Material: 3 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 93-96 
    ISSN: 0009-2940
    Keywords: Diazaphosphiridine oxides ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis, Structure, and Isomerization of Diazaphosphiridine OxidesHerrn Professor Joseph Grobe zum 60. Geburtstag gewidmet.The 1,2-Bis(alkyl)iminophosphane, Et3C  -  P=N  -  tBu (1), reacts with nitroso compounds, RNO (R=tBu, Ph), to form the diazaphosphiridine oxides, Et3C  -  YYP(=O)  -  NtBu  -  NYYR, 4a, b. While 4a (R=tBu) is thermally stable, 4b (R=Ph) isomerizes with formation of the benzodiazaphosphole oxide Et3C  -  YYP(= O)  -  NH  -  C6H4  -  NYYtBu (5). The corresponding phospholimine Et3C  -  YYP(=NtBu)  -  NH  -  C6H4  -  NYYtBu (7) has been obtained from 1 and azobenzene. The three-membered phosphorus heterocycle 4a has been characterized by X-ray structure analysis, which reveales some remarkable features.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0009-2940
    Keywords: Phosphoranes, bis(methylene), isomerization of ; λ3-Phosphiranes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bis(methylene)phosphoranes - Synthesis, Spectroscopic Investigations and Thermal Isomerizations to λ3-PhosphiranesA great number of differently substituted bis(methylene)phosphoranes 10 [R - P{ = C(SiMe3)2}2] are obtained by nucleophilic substitution from bis[bis(trimethylsilyl)methylene]-chlorophosphorane (8). The reactions of dichlorophosphanes 1 and methylenephosphanes 3 with lithium carbenoides 2 furnish the mixed derivatives 6 [R - P( = CR1R2)( = CR3R4)] and 7 [R - P( = C(SiMe3)2( = CR3R4)]. Among these the reaction of the sterically less hindered methylenephosphanes 3c, d [R2N - P = C(H)SiMe3, R = Et, iPr] with an excess of the lithium carbenoide 2b results in the formation of the σ4λ5-phosphiranes 11a, b {R2N - P[ = C(H)SiMe3]2}. The sterically highly demanding substituents in 10a - o render great thermal stability, while the mixed bis(methylene)phosphoranes 6, 7 rearrange to the corresponding σ4λ5-phosphiranes 15a-o. Investigations performed between 30 and 180°C reveal that all bis(methylene)phosphoranes, with the exception of 6c, k - m and 7e, can be isomerized. - The phosphino-substituted bis(methylene)phosphoranes 10k, 1 show different reactivity. Light-and thermally induced cleavage of the P - P bond, and dimerization of the corresponding fragments result in the formation of 14 and the diphosphanes 13a, b. The bis(methylene)phosphoranes 10a-o are investigated by UV and NMR spectroscopy.
    Additional Material: 3 Tab.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 645-648 
    ISSN: 0009-2940
    Keywords: Diphosphiranes, molecular structure of ; 1,2-Diphospha-2-propene ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis, Structure, and Reactivity of DiphosphiranesThe 1,1-diamino-1,2-diphospha-2-propen (2,6-Me2C5H8N)2P - P=C(SiMe3)2 (3) is obtained by treatment of bis(2,6-dimethyl-piperidino)(trimethylsilyl)phosphane (1) with [bis(trimethylsilyl)methylene]chlorophosphane (2). Compound 3 readily undergoes thermally isomerization to the diphosphirane 2,6- Nucleophilic substitution of the P1-chloro function of 1-chloro-2-(diisopropylamino)1-3,3-bis(trimethylsilyl)diphosphirane (6) leads to alkyl, amino, phosphanyl, and arsanyl derivatives 7a - d. The corresponding hydrogen derivative 7e is formed by reduction of 6 with tri-n1-butylstannane. The molecular structure of 7c as well as the NMR data of the diphosphiranes are discussed.
    Additional Material: 1 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 649-655 
    ISSN: 0009-2940
    Keywords: λ51-Phosphirenes, imino- ; λ51-Phosphaspiro[2.2]pentanes, imino ; Imines ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Structure of Phosphirene Imines and Iminophosphaspiro[2.2]pentanesThe reaction of the iminophosphanes R1P=NR2=[1, R2=2,4,6-tBu3C6H2;R1=Me (a) Et (b), PhCH=CH (c), Cl (d); R2=tBu, R1=Et3C (e)] with the alkynes R3C ≡ CR4 [2, R3=R4=Ph (a), CO2Me (b)] affords the corresponding phosphirene imines 3a - g. A [2 + 1] cycloadduct 3h is also formed in the reaction of the alkyne 2c (R3=H, R4=Ph) with 1d, while in the case of 1b the 1,2-addition product 4 is obtained. As demonstrated by the [2 + 1] cycloaddition reaction of the P1-alkylated iminophosphanes 1a, b with methylene-cyclopropanes 5a, b, the formation of the iminophosphaspiro[2.2]pentanes 6a, b is observed. The structures of the P/C heterocycles 3a, b and 6b have been determined by NMR spectroscopy and X-ray analysis.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 2397-2401 
    ISSN: 0009-2940
    Keywords: [Amino(imino)phosphane]gallium trichloride adduct ; 1,3-Diaza-2λ2-phosphonia-4λ4-gallatacyclobutanes ; Nickel tricarbonyl complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,3-Diaza-2λ2-phosphonia-4λ4-gallatacyclobutanesReaction of amino(imino)phosphanes 1a-c with gallium trichloride results in the formation of 1,3-diaza-2λ2-phosphonia-4λ4-gallatacyclobutanes 3a, b with elimination of chlorotrimethylsilane (1a) or tert-butyl chloride (1b, c). The intermediately formed amino(imino)phosphane/Lewis acid adducts R(Me3Si)NPN(GaCl3)R′ (2, R,R′ = tBu, Me3Si) can be isolated in the case of compound 2a (R = R′ = SiMe3). A diazaphosphasilacyclobutane - gallium trichloride adduct 4 is formed in a side reaction by isomerization of 2a. Reaction of compound 3b with Ni(CO)4 gives the corresponding transition metal complex 5. The NMR data and X-ray structures of compounds 2a, 4, and 5 are reported.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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