Aqua­bis­(4-methyl­benzene­sulfonato-κO)(η⁵-penta­methyl­cyclo­penta­dien­yl)rhodium(III) monohydrate

The title half-sandwich rhodium(III) complex, [Rh(C₁₀H₁₅)(C₇H₇O₃S)₂(H₂O)]·H₂O, consists of a π-bonded penta­methyl­cyclo­penta­dienyl group, two σ-bonded tosyl­ate groups and an aqua ligand. The structure displays both inter- and intra­molecular O—H...O hydrogen bonding. The inter­molecular hydrogen bonding results in an extended helical chain along a 2₁ screw axis parallel to c, due to hydrogen bonding from the coordinating water ligand to the lattice water mol­ecule and then to a sulfonate O atom of a different asymmetric unit.

(S)-α-Benzyl­prolinium cis-[(S)-α-benzyl­prolinato]dichloridopalladium(II)

The title complex salt, (C₁₂H₁₆NO₂)[PdCl₂(C₁₂H₁₄NO₂)], is of inter­est with respect to organic and organometallic catalysis. The compound crystallizes as very small orange–red irregular prisms and the asymmetric unit contains three crystallographically distinct cation–anion pairs. The coordination geometry about the palladium atoms is square-planar with the chloride ligands cis to one another. The structure displays N—H...Cl and O—H...O hydrogen bonding such that the N—H...Cl hydrogen bonds align the cation–anion pairs in a linear fashion along [001], with the O—H...O hydrogen bonds connecting these linear strands along [100] and [010].