811-79-0Relevant articles and documents
Preparation and properties of dimethyltetrafluorophosphate
Hohenstein, Christian,Kornath, Andreas,Neumann, Frank,Ludwig, Ralf
body text, p. 6421 - 6427 (2010/10/21)
Dimethyltrifluorophosphorane reacts with strong fluoride donors, such as CsF, Me4NF, and Me4PF, under formation of dimethyltetrafluorophosphates. The salts were characterized by infrared and Raman spectroscopy and in acetonitrile solutions by NMR spectroscopy. The experimental results show that only the trans isomer is formed. Theoretical calculations (B3LYP/6-31 +G* and RHF/6-31 +G*) of the trans and cis isomer yielded a difference of the Gibbs free energy of 29.4 kJ/mol (B3LPY/6-31 +G*). The Me4N+[Me2PF4] - crystallizes in the orthorhombic space group Pnma with four formula units per unit cell and dimensions of a = 1303.5(3), b = 799.8(2), and c = 1023.8(4) pm. The phosphorus atom has an octahedral environment with P-C distances of 183.4(3) pm and P-F bond lengths in the range between 166.1(1) and 168.2(1) pm. In the crystal packing, anions and cations are linked via weak fluorine hydrogen contacts forming a three-dimensional network.
Perfluormethyl Element Ligands, XXIV; Organotin Compounds as Reagents, III. Cleavage Reactions of the Element-Element-Bond in Compounds of the Type RnE-ERm (R = CH3, CF3; E = P, As, S, Se, Te; n, m = 1, 2)
Dehnert, Peter,Grobe, Joseph,Van, Duc Le
, p. 48 - 54 (2007/10/02)
A systematic study of the cleavage of element-element bonds in compounds of the type RnE-ERm (R = CH3, CF3; E = P, As, S, Se, Te; n, m = 1, 2) by the group IV A element hydrides Me3M'H (M' = Si, Ge, Sn; Me = CH3) has been carried out.To evaluate the reaction pathway, for a number of compounds the attack of H2O, CH3OH, HBr and HI has been investigated.Possible reaction intermediates have been synthesized by independent routes and tested under comparable conditions. - Keywords: Organoelement-Element Compounds, Perfluoromethyl Derivatives, NMR Spectra
