Water-soluble 3,7-dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (dmoPTA) as a polydentate ligand: synthesis of [RuClCp(PPh3)-mu-dmoPTA-1kappaP:2kappa2N,N'-Co(acac-kappa2O,O')2].H2O

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-phosphabicyclo3.3.1]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-phosphabicyclo3.3.1]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.