THE REACTION OF A TRIORGANOCHLOROINDATE WITH DIOXYGEN

The reaction of CsCl with In(CH2Ph)(3) yields the triorganochloroindat e Cs[(PhCH2)(3)InCl] (1). Treatment of In(CH2Ph)(3) with dry O-2 gives the alkoxide [(PhCH2)(2)InOCH2Ph](2) (2), whereas the reaction of 1 w ith O-2 leads to Cs-2[O{PhCh(2)In(OCH2Ph)(2)}(4)] (3). According to X- ray structural investigations, 1 contains Cs2Cl2 four-membered rings a s basic structural motif. The dimers are connected by Cs-pi-electron i nteractions to form a layer structure. Compound 3 can be described as a metalla(crown ether) fragment coordinating two Cs+ ions. Additional shielding of the Cs centers by weak Cs-pi-electron contacts was observ ed.