as shown by the NMR spectra of the complexes, particularly by the two and three bond phosphorus coupling J(31P183W) and J(31PM13C). This is confirmed by an X-ray structure determination for the 1,5-dimethyldiazaphosphole pentacarbonylchromium. The endocyclic angle at phosphorous in this complex is slightly opened, apart from that the ring is almost unchanged. The coordination octahedra are disordred
1,5-和2,5-二取代的1,2,3,σ 2 -二和1,2,4,3-σ 2 -三azaphospholes替换
金属羰一种CO。在所得的配合物中,
金属与
配体的(非碱性
磷P而非
吡啶吡啶N结合),如配合物的NMR光谱所示,尤其是通过二键和三键
磷偶合J(31 P 183 W)和Ĵ(31 PM 13C)。通过对1,5-二甲基二氮杂
磷五羰基
铬的X射线结构测定证实了这一点。在该络合物中,
磷的内环角稍微开了,除了环几乎没有变化。协调八面体在晶格中错位;CO和二氮杂
磷统计学上占据两个顺式位置。