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Base-Induced Dismutation of POCl3 and POBr3: Synthesis and Structure of Ligand-Stabilized Dioxophosphonium Cations

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F04%3A00010080" target="_blank" >RIV/00216224:14310/04:00010080 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Base-Induced Dismutation of POCl3 and POBr3: Synthesis and Structure of Ligand-Stabilized Dioxophosphonium Cations

  • Original language description

    The interaction between POCl3 or POBr3 and pyridine or DMAP has been reinvestigated to clarify the discrepancies between previously published results concerning the Lewis acidity of phosphoryl halides and their behavior toward pyridine bases. The obtained results show that POCl3 virtually does not react with pyridine, while it does with 4-(dimethylamino)pyridine (DMAP), even in SO2 solution, to yield an ionic compound [(DMAP)2PO2]Cl.3SO2 (1.3SO2). Its recrystallization from acetonitrile gives [(DMAP)2PO2]Cl.CH3CN (1.CH3CN). The POBr3 reacts readily with both DMAP and pyridine forming the analogous tribromides, [(DMAP)2PO2]Br3 (2) and [(py)2PO2]Br3 (3),respectively. The crystal structures of 1.CH3CN,1.3SO2, 2, and 4 revealed that all four compounds areionic containing the distorted tetrahedral cations [(DMAP)2PO2]+ and [(py)2PO2]+ .

  • Czech name

    Bazí vyvolaná dismutace POCl3 a POBr3: Syntéza a struktura ligandem stabilizovaných dioxofosfoniových kationtů

  • Czech description

    Za účelem objasnění rozporů mezi dříve publikovanými údaji o Lewisově kyselosti halogenidů fosforylu a jejich chování vůči pyridinovým bazím, byly znovu studovány reakce mezi POCl3, resp. POBr3, a pyridinem nebo DMAP. Výsledky studia ukazují, že POCl3 skutečně nereaguje s pyridinem, zatímco reaguje se 4-(dimethylamino)pyridinem (DMAP), dokonce i v roztoku v kapalném SO2, za vzniku iontové sloučeniny [(DMAP)2PO2]Cl.3SO2 (1.3SO2). Její rekrystalizace z acetonitrilu vede k [(DMAP)2PO2]Cl.CH3CN (1.CH3CN). POBr3 snadno reaguje jak s DMAP, tak i s pyridinem, za tvorby obdobných tribromidů, [(DMAP)2PO2]Br3 (2), resp. [(py)2PO2]Br3 (3). Krystalové struktury 1.CH3CN,1.3SO2, 2, a 4 prokázaly, že všechny čtyři sloučeniny mají iontovou strukturu, která obsahuje deformované tetraedrické kationty [(DMAP)2PO2]+ a [(py)2PO2]+.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CA - Inorganic chemistry

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2004

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    INORGANIC CHEMISTRY

  • ISSN

    0020-1669

  • e-ISSN

  • Volume of the periodical

    43

  • Issue of the periodical within the volume

    7

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    8

  • Pages from-to

    2435-2442

  • UT code for WoS article

  • EID of the result in the Scopus database