Alkyne Coupling Reactions Mediated by Tris(pyrazolyl)borate Ruthenium Vinylidene Complexes: X-Ray Crystal Structures of [TpRu=C=CHPh(PEt3)2][BPh4] and [TpRu=C=C(COOMe)CH=CHCOOMe(PEt3)2][BPh4]

1. Jiménez Tenorio, M.A.
2. Jiménez Tenorio, M.
3. Puerta, M.C.
4. Valerga, P.