ÜBER DIE UMSETZUNG VONN,N,N′-TRIMETHYLN-HALOGENPHOSPHINO-ETHYLENDIAMINEN MIT NATRIUMTETRAPHENYLBORAT UND ALUMINIUMCHLORID: DARSTELLUNG VON INTRAMOLEKULAREN KOMPLEXEN MIT λ3-PHOSPHOR(III)
- 1 January 1989
- journal article
- research article
- Published by Taylor & Francis in Phosphorus, Sulfur, and Silicon and the Related Elements
- Vol. 42 (1-2) , 21-35
- https://doi.org/10.1080/10426508908054872
Abstract
The reaction of Me2NCH2CH2N(Me)SiMe3 with Cl3CPCl2, CH3OPCl2, and F3CPCl2 was found to proceed with formation of Me3SiCl, and of the phosphorus-nitrogen bonded compounds, Me2NCH2CH2N(Me)P(CCl3)Cl, [Me2 (OMe)]+ Cl− and Me2NCH2CH2N(Me)-P(CF3)Cl. When the trimethylethylenediamino-substituted phosphines, Me2NCH2CH2N(Me)P(Me)Cl, Me2NCH2CH2N(Me)P(Ph)Cl,Me2NCH2CH2N(Me)P(Bu1)Cl,Me2NCH2CH2N(Me)P(CCl3)Cl, and the phospholidinium salts, [Me2 (OMe)]+ Cl−, and [Me2 (NEt2]+ Cl− were allowed to react with sodium tetraphenylborate the ionic, intramolecalary coordinated compounds, [Me2 (Me)]+ [BPh4]−, [Me2 (Ph)]+ [BPh4]−. [Me2 (Bu1)]+ [BPh4]−, [Me2 (CCl3)+ [BPh4]−, (Me2 (OMe)]+ [BPh4]−, and [Me2 (NEt2)]+ [BPh4]− were formed. A more complex interaction was observed when Me2NCH2CH2N(Me)P(CCl3)Cl was treated with AlCl3. The low-temperature 1H-n.m.r. spectra of some of these compounds indicate two sets of doublets for the methylprotons of the diastereotopic NMe2 groups. The x-ray determination of [Me2 (Ph)]+ [BPh4]− proves that the dimethylamino group in δ position, relative to phosphorus, forms a coordinative bond with the P(III) atom (P-N 188.2 pm).Keywords
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