%0 Journal Article %T Amphoteric allenylidene ruthenium complexes and the first dinuclear ruthenium species with a bis-alkenyl carbyne bridging ligand %+ Institut de biologie et chimie des protéines [Lyon] (IBCP) %A Rigaut, Stéphane %A Touchard, D %A Dixneuf, Ph %< avec comité de lecture %@ 0276-7333 %J Organometallics %I American Chemical Society %V 22 %N 20 %P 3980--3984 %8 2003-09 %D 2003 %R 10.1021/om0304098 %Z Chemical SciencesJournal articles %X Cationic ruthenium(II) allenylidenes trans-[Cl(dppe)(2)Ru=C=C=C(CH3)R]BF4 (R = Ph, CH3) can be deprotonated to generate neutral alkenyl acetylide metal trans- [Cl(dppe)(2)Ru-CdropC-C(=CH2)R] or protonated with HBF4.Et2O to lead to dicationic ruthenium(II) carbynes trans-[Cl(dppe)(2)RudropC-CH=C(CH3)R] (BF4)(2). The latter reaction was applied to transform a conjugated bis-allenylidene bridged diruthenium complex, trans-[Cl(dppe)(2)Ru=C=C=C(CH3)-p-C6H4-(CH3)C=C=C=Ru(dppe)(2)Cl](BF4)( 2), into the first bis-alkenyl carbyne ruthenium species trans-[Cl(dppe)(2)RudropC-CH=C(CH3)-p-C6H4-(CH3)C=HC-CdropRu(dppe)(2)C l](BF4)(4). %G English %L hal-01475058 %U https://univ-rennes.hal.science/hal-01475058 %~ CNRS %~ UNIV-LYON1 %~ TEST-UNIV-RENNES %~ UNIV-RENNES %~ UDL %~ UNIV-LYON