Abstract
The reaction of the phosphinidene and arsinidene complexes [Cp*E{W(CO)(5)}(2)] (E=P (1a), As (1b); Cp*=C5Me5) with carbodiimides leads to the new four-membered heterocycles of the type [Cp*C(NR)(2)E{W(CO)(5)}(2)] (E=P: R=iPr (2a), Cy (3a); E=As: R=iPr (2b), Cy (3b)). The reaction of phosphinidene complex 1a with alkyl azides yields the triazaphosphete derivatives [Cp*P{W(CO)(5)}N(R)NN{W(CO)(5)}] ...
Abstract
The reaction of the phosphinidene and arsinidene complexes [Cp*E{W(CO)(5)}(2)] (E=P (1a), As (1b); Cp*=C5Me5) with carbodiimides leads to the new four-membered heterocycles of the type [Cp*C(NR)(2)E{W(CO)(5)}(2)] (E=P: R=iPr (2a), Cy (3a); E=As: R=iPr (2b), Cy (3b)). The reaction of phosphinidene complex 1a with alkyl azides yields the triazaphosphete derivatives [Cp*P{W(CO)(5)}N(R)NN{W(CO)(5)}] (R=Hex, Cy) (4). These unprecedented N3P four-membered triazaphosphete complexes can be regarded as stabilized intermediates of the Staudinger reaction, which have not been previously isolated. All of the isolated products were characterized by NMR, IR spectroscopy, mass spectrometry, and by single-crystal X-ray diffraction analysis.
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