SYNTHESIS OF NITROGEN-BRIDGED AND CHLORO-BRIDGED ORGANOINDIUM COMPOUNDS - THE CRYSTAL-STRUCTURES OF [MES(CL)INN(SIME3)2]2 AND (I-PR2IN[N(H)T-BU]2IN(CL)I-PR)

[(PhCH2)2InN(H)t-Bu]2 (3) and [PhCH2(Cl)InN(SiMe3)2]2 (4) have been prepared by the reaction of (PhCH2)2InCl with LiN(H)t-Bu- and of PhCH2InCl2 with NaN(SiMe3)2, respectively. 3 could be isolated in two isomers, while 4 forms only one chloro-bridged isomer in solution and in the solid state. The possibility of a chloro-bridged alkyl(aryl)chloroindium amide is also realized in [Mes(Cl)InN(SiMe3)2]2 (2), as shown by X-ray analysis. The reaction of a 1 : 1-mixture of i-Pr2InCl/i-PrInCl2 with LiN(H)t-Bu leads to all three possible compounds: [i-Pr(Cl)InN(H)t-Bu]2 (1), {i-Pr2ln[N(H)t-BU]2In(Cl)i-Pr} (5), and [i-Pr2InN(H)t-Bu]2 (6). Two isomers of the new compound 5 are detectable in solution. The crystal structure has been determined for the less sterically hindered isomer 5a, which forms hydrogen-bridged (Cl-H-N-bridge) infinite chains along the c-axis.