Water-Soluble 3,7-Dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (dmoPTA) as a Polydentate Ligand: Synthesis of [RuClCp(PPh₃)-μ-dmoPTA-1κ<i>P</i>:2κ²<i>N</i>,<i>N</i>′-Co(acac-κ²<i>O</i>,<i>O</i>′)₂]·H₂O

Abstract

The dinuclear complex [RuClCp(PPh3)-mu-dmoPTA-1kappa P:2kappa(2)N, N'-Co(acac-kappa(2)O, O') 2].H 2O (2; dmoPTA = 3,7-dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane) has been synthesized by reaction of [RuClCp(HdmoPTA)(PPh3)](OSO2CF3) (1) with Co(acac)2 in methanol (HdmoPTA = 3,7-H-3,7-dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane). Elemental analysis, IR, NMR, and single-crystal X-ray structure determination have characterized the new complex. This complex is active for the catalytic isomerization of but-1-en-3-ol in acetone better than 1.