Abstract: | Cp*Me5P6C5: A New Carbaphosphane with a Structure Unit of Hittorf-Phosphorus The thermolysis of 1,2,3-tris(pentamethylcyclopentadienyl)cyclotriphosphane (Cp*P)3, 1 ] or 2,3,4,6-Tetrakis(pentamethylcyclopentadienyl)bicyclo3.1.0]hexaphosphane Cp*4P6, 2 ] leads in addition to the known 3,4-bis(pentamethylcyclopentadienyl)tricyclo3.1.0.02, 6]hexaphosphane Cp*2P6, 3 ] to the pentacyclic carbaphosphanes 3,4,5,6,11-pentamethyl-endo-9-pentamethylcyclopentadienyl- 3,4,5,6,11-pentacarba-pentacyclo 6.1.11,8.13,6.02,7010,11]-4-en-undecaphosphane and 3,4,5,6,11-pentamethyl-exo-9-pentamethylcyclopentadienyl-3,4,5,6,11-pentacarba-pentacyclo 6.1.11,8.13,6.02,7010,11]-4-en-undecaphosphane Cp*Me5P6C5, 4a, 4b ]. Furthermore, other polyphosphanes are formed, like 1,2,3,4-tetrakis(pentamethylcyclopentadienyl)cyclotetraphosphane (Cp*P)4, 5 ] and 2,4-bis(pentamethylcyclopentadienyl)-tetraphosphabicyclo1.1.0]butane (Cp*P)2P2, 6 ]. The structure of 4a and 4b is determined by NMR-spectroscopy. The molecule contains a P5C3-cunean-unit, to which a C2Me2-brigde and a PCp*-brigde is bonded. |