Synthetic, structural and theoretical studies on new aromatic 1,2,4-azadiphosphole ring systems: crystal and molecular structure of P2C2But2NPh
作者:F. Geoffrey N. Cloke、Peter B. Hitchcock、John F. Nixon、D. James Wilson、Frank Tabellion、Uwe Fischbeck、Fritz Preuss、Manfred Regitz
DOI:10.1039/a907550j
日期:——
Two different synthetic routes to the new aromatic 1,2,4-azadiphosphole ring system P2C2But2NR (R = Pri, Pr, Ph, MeC6H4, ButCH2 and cyclohexyl) are presented and the planar structure of P2C2But2NPh, established by a single crystal X-ray diffraction study, is in good agreement with theoretical calculations at the B3LYP/6-311G* level on the parent P2C2H2NH ring.
Imidovanadium(V) Complexes as Reaction Partners for Kinetically Stabilized Phosphaalkynes: Synthesis of 1,2,4-Azaphosphavanada(V)-cyclobutenes, 1,3,5-Triphosphabenzenes, and 1H-1,2,4-Azadiphospholes
Cycloaddition reactions of the kinetically stabilized phosphaalkynes 1 with the imidovanadium(v) trihalides 9 furnish the 1,2,4-azaphosphavanada(v)cyclobutenes 10. The stability of these novel metallacyclic compounds depends solely on the substitutents of the imido unit. Thus, the imidovanadium(v) species 9 with tertiary alkyl groups on the N atom form stable addition products with 1 while in the cases