Hydrido(prolinato-κ²N,O)tris­(tri­methyl­phosphane-κP)iridium(III) hexa­fluorido­phosphate

The title complex, [Ir(C₅H₈NO₂)H(C₃H₉P)₃]PF₆, has two independent anion–cation pairs in the asymmetric unit. The geometry about each Ir^III atom is pseudo-octa­hedral with a meridional arrangement of the P(CH₃)₃ ligands, N,O-bidentate coordination of prolinate and a hydride ligand trans to the prolinate N atom. The independent Ir^III moieties are joined by N—H...O hydrogen bonds and the N—H...O bonding motif continues throughout the structure, creating an extended chain parallel to the c-axis direction. The methyl groups of one P(CH₃)₃ ligand are rotationally disordered over two sets of sites in a 0.62 (2):0.38 (2) ratio.

mer-Hydridotris(tri­methyl­phosphane-κP)(D-valinato-κ²N,O)iridium hexa­fluorido­phosphate di­chloro­methane 0.675-solvate

The title compound, [Ir(C₅H₁₀NO₂)H(C₃H₉P)₃]PF₆·0.675CH₂Cl₂, an iridium compound with a meridional arrangement of PMe₃ groups, O,N-bidentate coordination of D-valine and with a hydride ligand trans to the N atom is compared with the L-valine complex reported previously. As expected, the complexes from the corresponding L and D isomers of valine crystallize in enanti­omorphic space groups (P4₃ and P4₁, respectively). In the crystal, N—H...O and N—H...F hydrogen bonding is observed, the N—H to carbonyl oxygen hydrogen bond producing a helical motif that proceeds along the 4₁ screw of the c axis.

Tri­methyl­phospho­nium trans-tetra­chlorido­bis­(tri­methyl­phosphane-κP)iridate(III)

The title compound, [HP(CH₃)₃][IrCl₄{(H₃C)₃P}₂], consists of a tri­methyl­phospho­nium cation and a tetra­chlorido­bis­(tri­methyl­phosphane)iridate(III) anion. The anion has an octa­hedral arrangement of ligands, with the tri­methyl­phosphane groups occupying trans positions. The Ir^III atom sits on an inversion center with one P(CH₃)₃ ligand and two chloride ligands in the asymmetric unit. The tri­methyl­phospho­nium cation is disordered about a twofold rotation axis. The title compound is the first structurally characterized tetra­chlorido­bis­(phosphane)iridate complex.

N¹,N²-Di­methyl­ethane-1,2-diaminium dichloride

The cation of the title salt, C₄H₁₄N₂²⁺·2Cl^-, is located on a crystallographic inversion center and is bis­ected by a mirror plane, with one quarter of the C₄H₁₄N₂²⁺·2Cl^- formula unit being crystallographically unique. he chloride ions also sit on a mirror plane. The conformation of the cation is a regular straight-chain conformation with all non-H atoms in anti positions. In the crystal, hydrogen bonding between N-H groups and chloride anions yields a zigzag ladder-type structure along [010].

Crystal structure of chlorido­(η²-phenyl iso­thio­cyanate-κ²C,S)-mer-tris­(tri­methyl­phosphane-κP)iridium(I)

In this distorted octa­hedral iridium complex, the three PMe3 ligands are arranged in a meridional geometry, with the chloride ion cis to all three PMe3 groups and the phenyl iso­thio­cyanate ligand bonded in an η²-fashion through the C and S atoms. The geometric parameters for the metal-complexed PhNCS group are compared with other metal-complexed phenyl iso­thio­cyanates, as well as with examples of uncomplexed aryl iso­thio­cyanates.