Insertion of Ruthenium into an Inorganic, Cyclic Biradicaloid

The reaction between [Ru2Cl2(mu(2)-Cl)(2)(CO)(6)] and the biradicaloid [P(mu-NTer)](2) proceeds under insertion of a Ru(II)Cl(CO)(2) fragment into one P-N bond and addition of chloride to the adjacent phosphorus center. Thereby an unprecedented inorganic ruthenacycle is obtained that was investigated by single crystal X-ray analysis, NMR and IR spectroscopy and DFT calculations. The reactivity of the complex in a halide-pseudo-halide exchange reaction and a coordination reaction were investigated.