Ruthenium complexes containing Group 5B donor ligands. Part 4. Synthesis, crystal and molecular structure of def-tri-µ-chloro-h-diphenylphosphinito-bgi-tris(diphenylphosphinous acid)-ac-bis(methyl diphenylphosphinite) diruthenium(II)

Abstract

Pyrolysis of solutions containing [{P(OMe)Ph₂}₃RuCl₃Ru{P(OMe)Ph₂}₃]Cl for 12 h at 120 °C gives yellow crystals (1) shown by X-ray diffraction analysis to be [{P(OMe)Ph₂}₂{P(OH)Ph₂}RuCl₃Ru{P(OH)Ph₂}₂(Ph₂PO)]. The crystals are monoclinic, space group P2₁/c with a= 13.19, b= 21.98, c= 24.98 Å, β= 109.40°, and contain one molecule per asymmetric unit. The structure was solved using 1 534 film data, and refined to R 0.11.

Related pyrolysis reactions give the compounds [{P(OEt)Ph₂}₂{P(OH)Ph₂}RuCl₃Ru{P(OH)Ph₂}₂(Ph₂PO)](2) and [{P(OEt)Ph₂}₂{P(OH)Ph₂}RuBr₃Ru{P(OH)Ph₂}₂(Ph₂PO)](3).