μ-Oxido-bis[hydridotris(trimethyl-phosphane-κP)iridium(III)](Ir—Ir) bis(tetrafluoridoborate) dihydrate
Husebo, Trang Le
MetadataShow full item record
The title compound, [Ir₂H₂O(C₃H₉P)₆]×(BF₄)₂ ⋅ 2H₂O, was isolated from the reaction between [Ir(COD)(PMe₃)₃]BF₄⁻ and H₂in water (COD is cycloocta-1,5-diene). The asymmetric unit consists of one IrIII atom bonded to three PMe₃ groups, one hydride ligand and half an oxide ligand, in addition to a BF counter-ion and one water molecule of hydration. The 4 single oxide ligand bridging two IrIII atoms is disordered across an inversion center with each O atom having a 50% site occupancy. Each IrIII atom has three PMe₃ groups occupying facial positions, with the half-occupancy O atoms, a hydride ligand and an Ir—Ir bond completing the coordination sphere. The Ir—Ir distance is 2.8614 (12) Å, comparable to other iridium(III) metal–metal bonds. Two water molecules hydrogen bond to two BF₄⁻ anions in the unit cell.