| Abstract
| - The first structurally characterized monomeric, base-free lanthanide alkynide complex, (TpMe2)2Sm(C⋮CPh) (2), was synthesized by the reaction of Sm(TpMe2)2 (1) with Hg(C⋮CPh)2 in THF. Thermolysis of 2 in benzene at 105 °C resulted in a ligand rearrangement with the formation of a new complex, (TpMe2){HB(Me2pz)2(C⋮CPh)}Sm(Me2pz) (3).
- Reaction of Sm(TpMe2)2 (1) with Hg(C⋮CPh)2in THF at ambient temperature afforded the monomeric,base-free lanthanide alkynide complex (TpMe2)2Sm(C⋮CPh) (2). Thermolysis of 2 in benzene resulted inclean transformation to the new complex (TpMe2){HB(Me2pz)2(C⋮CPh)}Sm(Me2pz) (3), the result of an interesting,unusual ligand rearrangement on the Sm(III) center.Complexes 2 and 3 have been fully characterized byspectroscopic methods and X-ray crystallography.
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