THE REACTION OF CYANIDE IONS WITH TRIMETHYLGALLIUM - THE CRYSTAL-STRUCTURES OF [CS(CN(GAME3)(2))](N) (1) AND [CS(TOLUENE)(2)(CN(GAME3)(2))](N) (2)

CsCN reacts with GaMe3 in the molar ratio of 1:2 in the absence of add itional solvent to the metalate [Cs{CN(GaMe3)(2)}] (1). 1 can be recry stallized from MeCN/toluene, forming [Cs(toluene)(2){CN(GaMe3)(2)}] (2 ). If CsCN is treated with one equivalent GaMe3 in Et2O at 20 degrees C, the metalate [Cs(NCGaMe3)] can be isolated. 1-3 were characterized by NMR, LR, and MS techniques. In addition. S-ray structure analyses o f 1 and 2 were prepared. According to the structural characterization 1 consists of a helix of Cs+ ions and side-on coordinated anions [Me3G aCNGaMe3](-), running along [010]. pi-Electron-Cs+ contacts between Cs cations and toluene molecules are dominating the structure of 2. The residual equatorial positions at the [Cs(toluene)(2)](+) sandwich-ion are occupied by Cs+-hydrogen(methyl) interactions. A three-dimensional network is the result of the contacts between cations and anions.