913067-56-8Relevant academic research and scientific papers
Reductive reactivity of the organolanthanide hydrides, [(C 5Me5)2LnH]x, leads to ansa-allyl cyclopentadienyl (η5-C5Me4CH 2-C5Me4CH2-η3) 2- and trianionic cyclooctatetraenyl (C8H 7)3- ligands
Evans, William J.,Schmiege, Benjamin M.,Lorenz, Sara E.,Miller, Kevin A.,Champagne, Timothy M.,Ziller, Joseph W.,DiPasquale, Antonio G.,Rheingold, Arnold L.
, p. 8555 - 8563 (2008)
The reductive reactivity of lanthanide hydride ligands in the [(C 5Me5)2LnH]x complexes (Ln = Sm, La, Y) was examined to see if these hydride ligands would react like the actinide hydrides in [(C5Me5)2AnH2] 2 (An = U, Th) and [(C5Me5)2UH] 2. Each lanthanide hydride complex reduces PhSSPh to make [(C 5Me5)2Ln(μ-SPh)]2 in ～90% yield. [(C5Me5)2SmH]2 reduces phenazine and anthracene to make [(C5Me5) 2Sm]2(μ-η3:η3-C 12H8N2) and [(C5Me5) 2Sm]2(μ-η3:η3-C 10H14), respectively, but the analogous [(C 5Me5)2LaH]x and [(C 5Me5)2YH]2 reactions are more complicated. All three lanthanide hydrides reduce C8H8 to make (C5Me5)Ln(C8H8) and (C 5Me5)3Ln, a reaction that constitutes another synthetic route to (C5Me5)3Ln complexes. In the reaction of [(C5Me5)2YH]2 with C8H8, two unusual byproducts are obtained. In benzene, a (C5Me5)Y[(η5-C5Me 4CH2-C5Me4CH2- η3)] complex forms in which two (C5Me 5)1- rings are linked to make a new type of ansa-allyl-cyclopentadienyl dianion that binds as a pentahapto-trihapto chelate. In cyclohexane, a (C5Me5)2Y(μ- η8:η1-C8H7)Y(C 5Me5) complex forms in which a (C8H 8)2- ring is metalated to form a bridging (C 8H7)3- trianion.
