Competitive formation of η1-1-phosphaallene and 1H-phosphirene complexes
Abstract
The 2H-azaphosphirene complex 1 reacts with triorganostannyl(ethoxy)acetylenes 2a,b to yield bifunctional η1-1-phosphaallene 5a,b and 1H-phosphirene complexes 6a,b; 5a,b and 6a,b are characterized by NMR spectroscopy (13C, 31P) and complex 6b by single crystal X-ray diffraction.