PREPARATION AND CRYSTAL-STRUCTURE DETERMINATION OF TRIPHENYLMETHANIDECESIUM-CENTER-DOT-1.5 DIMETHOXYETHANE AND OF PHENOTHIAZINE CESIUM DIGLYME

Reaction of triphenylmethane with cesium metal in dimethoxyethane (DME ) or of phenothiazine in diglyme yields two organometallic cesium comp ounds as extremly air and moisture sensitive single crystals. In triph enylmethanide cesium . 1.5 DME, the counter cations form two structura lly different contact ion pairs to symmetry-related triphenylmethanide anions and are solvated in addition by two crystallographically indep endent ether solvent molecules, which partly connect the resulting pol ymeric chains. In phenothiazine cesium diglyme, each counter cation is surrounded by three symmetry-related phenothiazine anions and one dig lyme molecule predominantly via their oxygen, nitrogen and sulfur cent ers and again infinite polymer chains are formed. All structural resul ts are discussed based on literature data of analogous complexes.