A ruthenium(II) allenylidene complex with a 4,5-diazafluorene functional group: A new building-block for organometallic molecular assemblies

作者：Pelerin Olivier; Olivier Celine; Roisnel Thierry; Touchard Daniel^*; Rigaut Stephane

来源：Journal of Organometallic Chemistry, 2008, 693(12): 2153-2158.

DOI：10.1016/j.jorganchem.2008.03.014

• ruthenium
• allenylidene
• diazafluorene
• alpha-diimine complexes
• carbon-rich bridges

The synthesis of the new ruthenium(II) allenylidene complex [ClRu(dppe)(2)= C = C = C(11)H(6)N(2)][OTf] (4) (dppe = 1,2-bis(diphenylphosphino)ethane) terminated with a 4,5-diazafluorene ligand is reported. Further coordination of that metal allenylidene to ruthenium and rhenium moieties leads to the bimetallic adducts [ClRu(dppe)(2)= C = C = C(11)H(6)N(2){Ru(bpy)(2)}][B(C(6)F(5))(4)](3) (5a), [ClRu(dppe)(2)= C = C = C(11)H(6)N(2){Ru((t)Bu-bpy)(2)}][PF(6)](3) (5b) and [ClRu(dppe)(2)= C = C = C(11)H(6)N(2){Re(CO)(3)Cl}][OTf] (6). Their optical and electrochemical properties show that the allenylidene moiety is an attractive molecular clip for the access to larger original redox-active homo/heteronuclear multi-component supramolecular assemblies. The X-ray crystal structure of the allenylidene metal building block is also described.

• 出版日期2008-6-1