Zur Transformation des P
<sub>4</sub>
‐Tetraeders durch Ni‐Komplexe
作者:Manfred Scheer、Uta Becker
DOI:10.1002/cber.19961291026
日期:1996.10
The Transformation Pathway of the P4Tetrahedron by Ni ComplexesThe thermal reaction of [Cp*NiCO]2with white phosphorus in the presence of [Cr(CO)5(thf)] at 70°C produces the bentcyclo‐P4ligand complex4and the Ni2P4prismane5. However under photochemical conditions additional products such ascyclo‐P3complexes6and the Ni2P2tetrahedrane7are also formed.4and5were characterized by NMR, IR, and mass spectroscopy as well as by X‐ray structure analysis. The structures of these products and the experimentals verification of the conversion of4into5or into6and7as well as the cubane analog12gives evidence for a transformation pathway starting from P4tetrahedron via a possible bicyclotetraphosphane intermediate to give the bent P4complex4. From4several pathways are possible; the main route is to form the Ni2P4prismane5. Photochemically a P3/P1fragmentation also occurs, albeit in low yield, to give5and6.