Bruce, Michael I.Humphrey, Mark G.Koutsantonis, George A.Nicholson, Brian K.2026-01-072026-01-070022-328XORCID:/0000-0002-4433-6783/work/162949536https://hdl.handle.net/1885/733803906Halogens react with ruthenium acetylide complexes to give dark green halovinylidene derivatives. In one case, bromination of the phenyl ring of the parent phenylacetylide complex occurs, as shown by the X-ray structure of [Ru{CCBr(C6H4Br-4)}(PPh3)2(η-C5H5)] [Br3] · CHCl3. The RuC and CC distances are 1.85(1) and 1.31(2) Å, respectively.Acknowledgements. Financial support of this work from the Australian Research Grants Scheme is gratefully acknowledged. MGH is the holder of a Commonwealth Post-Graduate Research Award.enReactions of transition metal acetylide complexes. IV. Synthesis and X-ray structure of a bromovinylidene complex, [Ru{CCBr(C<sub>6</sub>H<sub>4</sub>Br-4)}(PPh<sub>3</sub>)<sub>2</sub>(η-C<sub>5</sub>H<sub>5</sub>)][Br<sub>3</sub>] · CHCl<sub>3</sub>1985-12-0310.1016/0022-328X(85)80383-14243458522