Gallium complexes with R-(o-hydroxybenzyl)iminodiacetate ligands (Lx) have been synthesized and their thermodynamic constants determined in aqueous solution by potentiometric titration. These quantitative results were also confirmed by 1 H and 19 F NMR spectroscopy. An X-ray study of GaL3 (R = NO 2 ) showed that the gallium(III) ion is hexacoordinate with two H 2 O molecules in cis positions. The ability of the ligands

Treatment of Cp*Ir(PMe3)(SH)2 (1), where Cp* = η5-C5Me5, with thionylaniline (PhNSO), CS2, and p-tolylisothiocyanate (p-tolNCS) gave Cp*Ir(PMe3)(S3O) (3), Cp*Ir(PMe3)(S2CS) (4), and Cp*Ir(PMe3)(SH)(SC(S)HN-p-tol) (5), respectively. Treatment of Cp*Ir(PMe2R)(H)(SH) (2a,b), where R = Me (2a), Ph (2b), with PhNSO gave Cp*Ir(PMe2R)(S2O) (6a,b) as mixtures of interconvertible conformational isomers. Treatment of 2a with p-tolNCS gave Cp*Ir(PMe3)(H)(SC(S)NH-p-tol) (7). The crystal structures of 3−5, 6b, and 7 are reported.