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New CF 3 Substituted Phosphorus‐Tellurium Heterocycles
Author(s) -
Lux Karin,
Schön Oliver,
Karaghiosoff Konstantin
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900324
Subject(s) - tellurium , chemistry , telluride , trimethylsilyl , substituent , phosphorus , nuclear magnetic resonance spectroscopy , medicinal chemistry , stereochemistry , inorganic chemistry , organic chemistry
The reaction of trifluormethyl dichlorophosphine (CF 3 PCl 2 ) with sodium telluride Na 2 Te or bis(trimethylsilyl) telluride (Me 3 Si) 2 Te results in the formation of four new phosphorus tellurium heterocycles ( 1–4 ) with the electron withdrawing CF 3 substituent bonded to phosphorus. The telluratriphosphetane (CF 3 P) 3 Te ( 1 ), telluratetraphospholane (CF 3 P) 4 Te ( 2 ), telluradiphosphirane (CF 3 P) 2 Te ( 3 ) and ditelluratriphospholane (CF 3 P) 3 Te 2 ( 4 ) are characterized by multinuclear ( 31 P, 19 F and 125 Te) NMR spectroscopy. A full analysis of the 19 F NMR spectrum of telluratriphosphetane (CF 3 P) 3 Te is presented. The new heterocycles are remarkably stable in solution and eliminate only slowly tellurium to form cyclophosphines (CF 3 P) n ( n = 3–5).