Über Metallalkyl- and Arylverbindungen LIV. Neue Tripheny1methyl-Verbindungen des Kaliums: [KCPh3(PMDTA)], [KCPh3(DIGLYM]n und [KCPh3(THF)]n

Solvates of triphenylmethyl potassium have been prepared with three different Lewis bases and their crystal structures determined by X-ray diffraction methods. In [KCPh 3 (PMDTA)] (bd1) (PMDTA  N,N,N′,N″,N″-pentamethyl-diethylenetriamine) discrete molecules are observed whereas the solvates with DIGLYME (MeOCH 2 CH 2 0CH 2 CH 2 OMe) and THF are polymeric in the crystal: [KCPh 3 (DIGLYME)] n ( 32 , zigzag-chain structure) [KCPh 3 (THF)] n (3, sheet structure).