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  • 1
    Electronic Resource
    Electronic Resource
    An unusual reaction of sulfur tetrafluoride with a carbonyl compound (1977)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 99 (1977), S. 6096-6097 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00460a043
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  • 2
    Electronic Resource
    Electronic Resource
    Molecular structures of phosphorus compounds. 6. An electron diffraction study of tert-butylfluorophosphines BuntPF3-n (n = 1, 2, 3) (1978)
    s.l. : American Chemical Society
    Inorganic chemistry 17 (1978), S. 1254-1258 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50183a031
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis of tris(difluorophosphino)amine and (trimethylsilyl)bis(difluorophosphino)amine (1979)
    s.l. : American Chemical Society
    Inorganic chemistry 18 (1979), S. 871-873 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50193a070
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  • 4
    Electronic Resource
    Electronic Resource
    Carbene Complexes of Pnictogen Pentafluorides and Boron Trifluoride (2000)
    Springer
    Monatshefte für Chemie 131 (2000), S. 251-265 
    Details
    ISSN: 1434-4475
    Keywords: Keywords. Carbene; Pnictogen(V) fluorides; Boron(III) fluoride; Zwitterions; Imidazol-2-ylidene.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary.  Synthesis, characterization, and solid state X-ray crystallographic structures for 12-Pn-6 complexes derived from carbene 4,5-dichloro-1,3-dimesitylimidazol-2-ylidene and phosphorus, arsenic, or antimony pentafluoride are reported. The adducts show octahedral geometries at the pnictogen centers with C-Pn bond distances of 189.8 (P), 199.9 (As), and 217.5 (Sb) pm. The structures are those of internal zwitterions with imidazolium ion character in the heterocyclic ring and a pentafluoropnictanide anion bonded to C2. Adducts of BF3 with 1,3-dimesitylimidazol-2-ylidene and 4,5-dichloro-1,3-dimesitylimidazol-2-ylidene are also reported for comparison. Although the reactivity of chlorinated and non-chlorinated carbenes varies considerably, the spectroscopic and structural properties of analogous adducts are remarkably similar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007060070101
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  • 5
    Electronic Resource
    Electronic Resource
    Reaktionen des 2,2,2-Trifluor-4,4,5,5-tetrakis(trifluormethyl)-1,3,2λ5-dioxaphospholans (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 611-618 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of 2,2,2-Trifluor-4,4,5,5-tetrakis(trifluormethyl)-1,3,2λ5-dioxaphospholanePF5 and PhPF4 react with 2-[bis(trimethylsilyl)amino]-2,2-difluoro-4,4,5,5-tetrakis (trifluoromethyl)-1,3,2λ5-dioxaphospholane (1b) to yield the trifluorophosphorane 2 or 3, respectively. 3 is the first known example of a stable fluorophosphazophosphorane. 2 reacts with methoxytrimethylsilane to give the thermally stable difluoromethoxyphosphorane4; with hexamethyldisiloxane 5 is obtained. PF5 easily converts 5 into 2. Diphenyl(trimethylsilyl)phosphine reduces 2 to the cyclic fluorophosphite 6, which displaces the coordinated cycloolefin in (C7H8)Mo(CO)4 (C7H8 = norbornadiene) with formation of the cis-complex 7. The spectroscopic data are discussed.
    Notes: Die Reaktion von PF5 bzw. PhPF4 mit 2-[Bis(trimethylsilyl)amino]-2,2-difluor-4,4,5,5-tetrakis-(trifluormethyl)-1,3,2λ5-dioxaphospholan (1b) ergibt das Trifluorphosphoran 2 bzw. 3, das erste stabile Fluorphosphazophosphoran. 2 setzt sich mit Methoxytrimethylsilan zu dem thermisch beständigen Difluormethoxyphosphoran 4 um, mit Hexamethyldisiloxan entsteht 5, das mit PF5 leicht in 2 umgewandelt werden kann. Diphenyl(trimethylsilyl)phosphin reduziert 2 zu dem cyclischen Fluorphosphit 6, das in (C7H8)Mo(CO)4 (C7H8 = Norbornadien) das Cycloolefin unter Bildung des cis-Komplexes 7 substituiert. Die spektroskopischen Daten werden diskutiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100222
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  • 6
    Electronic Resource
    Electronic Resource
    Oxidative Addition von Hexafluoraceton und Hexafluorbiacetyl an Phosphor(III)-fluoride RR′PF: Synthese chiraler 1,3,2-Dioxaphospholane und 1,3,2-Dioxaphospholene (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 2077-2085 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Oxidative Addition of Hexafluoroacetone and Hexafluorobiacetyl to Phosphorus(III) Fluorides RR′PF: Synthesis of Chiral 1,3,2-Dioxaphospholanes and 1,3,2-DioxaphospholenesHexafluoroacetone and hexafluorobiacetyl react with fluorophosphines and fluorophosphites in an oxidative addition to form stable cyclic oxyphosphoranes containing the 1,3,2-dioxaphospholane (2) or 1,3,2-dioxaphospholene ring system (3). 19F and 31P NMR spectra are reported. The temperature dependency of the 19F NMR spectra in the range between -90 and +110°C is discussed in the light of pseudorotation processes at phosphorus(V).
    Notes: Hexafluoraceton und Hexafluorbiacetyl reagieren mit Fluorphosphinen und Fluorphosphiten unter Bildung stabiler cyclischer Oxyphosphorane mit dem 1,3,2-Dioxaphospholan- (2) bzw. Dioxaphospholen-Ringsystem (3). 19F- und 31P-NMR-Spektren werden mitgeteilt. Die Temperaturabhängigkeit der 19F-NMR-Spektren im Bereich von -90 bis +110°C wird auf der Basis von Pseudorotationsprozessen am Phosphor(V) diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781110603
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  • 7
    Electronic Resource
    Electronic Resource
    Darstellung und Reaktionen des Dimethylphosphinigsäure-trimethylsilylesters, Me2P—OSiMe3 (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 890-900 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Reactions of Trimethylsilyl Dimethylphosphinite, Me2P—OSiMe3Reaction of dimethylphosphine oxide with (dimethylamino)trimethylsilane furnishes the trimethylsilyl ester 1 of dimethylphosphinous acid in good yields; at elevated temperature tetramethyldiphosphane monoxide (2) is formed from 1 with loss of hexamethyldisiloxane. Reactions of 1 with sulfur (to give 3) and trimethylsilyl azide (to give 4), as well as the preparation of the transition metal complexes 5 and 6 are described. Oxidative addition of hexafluoroacetone to 1 gives the Me3SiO-functional 1,3,2λ5-dioxaphospholane 7, which serves as a precursor for the synthesis of compounds 8-13 which may be considered as derivatives of the hypothetical 1,3,2λ5-dioxaphospholan-2-ol 7a. Attempts at the synthesis of this compound led to the isomeric, acyclic ester of dimethylphosphinic acid 14 which was found to exist as a hydrogen-bridged dimer in the solid state.
    Notes: Durch Umsetzung von Dimethylphosphinoxid mit (Dimethylamino)trimethylsilan ist der Dimethylphosphinigsäure-trimethylsilylester (1) in guten Ausbeuten zugänglich, aus dem bei erhöhter Temperatur unter Abspaltung von Hexamethyldisiloxan Tetramethyldiphosphanmonoxid (2) gebildet wird. Reaktionen von 1 mit Schwefel (zu 3) und Trimethylsilylazid (zu 4) sowie die Darstellung der Übergangsmetallcarbonyl-Komplexe 5 und 6 werden beschrieben. Die oxidative Addition von Hexafluoraceton an 1 führt zu dem Me3SiO-funktionellen 1,3,2λ5-Dioxaphospholan 7, von dem ausgehend die Derivate 8-13 des hypothetischen 1,3,2λ5-Dioxaphospholan-2-ols 7a erhalten werden. Versuche zur Darstellung von 7a führten zu dem isomeren, acyclischen Dimethylphosphinsäureester 14, der im Festkörperzustand als wasserstoffverbrücktes Dimeres vorliegt.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781110309
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  • 8
    Electronic Resource
    Electronic Resource
    Über eine 1,3,4λ5-Dioxaphospholan → 1,2λ5-Oxaphosphetan-Umlagerung (1977)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3214-3216 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19771100929
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  • 9
    Electronic Resource
    Electronic Resource
    Reaktionen eines N-silylierten Iminophosphins (Phospha(III)azens) mit perfluorierten Ketonen (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 3105-3111 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of an N-Silylated Iminophosphine (Phospha(III)azene) with Perfluorinated KetonesCycloaddition of hexafluoroacetone to the iminophosphine 4 furnishes the novel three-membered ring compound 2, the first isolable product of this type involving a main group element. 4 reacts with perfluorobiacetyl to form the 4,5-bis(trifluoromethyl)-1,3,2λ5-dioxaphosphole 8. The analogous 4,4,5,5-tetrakis(trifluoromethyl)-1,3,2λ5-dioxaphospholane 1a is obtained in the reaction of lithium bis(trimethylsilyl)amide with the phospholane 3. The product resulting from dimerisation of 4, compound 5, is found to oxidatively add only one molecule of perfluorobiacetyl with formation of the λ3λ5-diazadiphosphetidine 9.
    Notes: Das erste isolierbare Dreiringsystem 2, das Hexafluoraceton mit einem Hauptgruppenelement bildet, konnte durch 1,2-Cycloaddition an das Iminophosphin 4 dargestellt werden. Perfluorbiacetyl ergibt das 4,5-Bis(trifluormethyl)-1,3,2λ5-dioxaphosphol 8. Das analoge 4,4,5,5-Tetrakis(trifluormethyl)-1,3,2λ5-dioxaphospholan 1a wurde durch Umsetzung von Lithium-bis(trimethylsilyl)amid mit dem Phospholan 3 synthetisiert. Das Dimere von 4, Verbindung 5, addiert nur ein Molekül Perfluorbiacetyl unter Bildung des λ3λ5-Diazadiphosphetidins 9.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781110910
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  • 10
    Electronic Resource
    Electronic Resource
    Darstellung und kernresonanzspektroskopische Untersuchungen von Vinyl- und Ethinyl-Phosphor-Verbindungen (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 1845-1856 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and NMR Spectroscopic Studies of Phosphorus Compounds with Vinyl and Ethinyl GroupsThe synthesis of a series of phosphorus compounds of types CH2 = CHPX2 (X = Hal) and CH2 = CHP(Y)X2 (Y = O, S: X = Hal, OEt) as well as of CH2 = CHPF4. HC ≡ CP(O)F2, and HC ≡ CPF4 is described. Characterization of the new compounds was, especially, by NMR spectroscopy (1H, 13C, 31P. 19F). The 13C NMR spectra were investigated with regard to a correlation between J(CP) and the s-character of the carbon-phosphorus bond.
    Notes: Die Synthesen einer Reihe von Phosphorverbindungen der Typen CH2= CHPX2 (X = Hal) und CH2 = CHP(Y)X2(Y = O, S; X = Hal, OEt) sowie von CH2 = CHPF4, HC ≡ CP(O)F2 und HC ≡ CPF4 werden beschrieben. Die Charakterisierung der neuen Verbindungen erfolgte vor allem durch NMR-Spektroskopie (1H, 13C, 31P, 19F). Die 13C-NMR-Spektren wurden, unter Heranziehung von weiteren Daten aus der Literatur, in bezug auf den Zusammenhang zwischen J(CP) und dem s-Charakter der Kohlenstoff-Phosphor-Bindung untersucht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781110519
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