Organphosphorus Compounds, Part 150; Imidovanadium(V)-Complexes as Reaction Partners for Kinetically Stabilized Phosphaalkynes. 1-Aza-2-phospha-4-vanada(V)-cyclobutenes: Precursors in the Synthesis of 1H-1,2-Azaphospholes - Peters, Christoph; Tabellion, Frank; Schröder, M; Bergsträßer, U; Preuss, Fritz; Regitz, Manfred (Synthesis, 2000)