Preparative applications of metal vapours obtained by evaporation of metal powders from coated filaments: a new preparation of dibenzeneruthenium and observation of its limiting n.m.r. spectrum
Abstract
Ruthenium vapour, conveniently prepared by resistive heating of tungsten filaments coated with a mixture of ruthenium powder and epoxy resin, yields stable (Me2NPF2)5Ru and thermally unstable (C6H6)2Ru on condensation with Me2NPF2 and benzene respectively; the 1H n.m.r. spectrum of (C6H6)2Ru is consistent with a 1–4-η: 1–6-η formulation.