@article {5078, title = {Synthesis, structure, and reactivity of diamidophosphine complexes of yttrium and the lanthanides}, journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie}, volume = {79}, number = {7}, year = {2001}, note = {ISI Document Delivery No.: 473RETimes Cited: 10Cited Reference Count: 17}, month = {Jul}, pages = {1194-1200}, type = {Article}, abstract = {The reaction of the dilithiodiamidophosphine ligand precursor PhP(CH2SiMe2NPh)(2)Li-2(THF)(2)([NPN]Li-2(THF)(2)) with LnCl(3)(THF)(3) (Ln = Y, Sm, Ho. Yb. Lu; THF = tetrahydrofuran) in refluxing toluene generates the mononuclear complexes [NPN]LnCI(THF) in good yield. The molecular structures have been shown to be five-coordinate in the solid state and in solution. Attempts to prepare alkyl derivatives have only met with partial success; the reaction of MeMgCl with [NPN]YCl(THF) generates the partially characterized mixed-metal derivative [NPN]YMe2MgCl. The reaction with LiAlH4 results in complete ligand exchange and the formation of the tetranuclear lithium aluminum hydride derivative ([NPN]AlH2Li(THF))(2). Reduction of the lutetium derivative with KC8 and naphthalene generated the dinuclear naphthalene-bridged species {[NPN]Lu}(2)(mu-eta (4):eta (4)-C10H8) wherein each Lu centre engages in eta (4)-coordination to opposite sides of the arene moiety. X-ray crystallography was used to characterize the four complexes.}, keywords = {aluminum, BRIDGING N-2 UNIT, CATALYSTS, CRYSTAL-STRUCTURE, DINITROGEN, F-BLOCK METALS, lanthanides, LIGAND, lithium, mixed-donor ligands, NAPHTHALENE, OLEFIN POLYMERIZATION, SIDE-ON, TERTIARY PHOSPHINE COMPLEXES, YTTRIUM}, isbn = {0008-4042}, url = {://000171061200016}, author = {Fryzuk,Michael D. and Yu, P. H. and Patrick, B. O.} } @article {4808, title = {Dinuclear pi complexes of yttrium and lutetinm with sandwiched naphthalene and anthracene ligands: Evidence for rapid intramolecular inter-ring rearrangements}, journal = {Angewandte Chemie-International Edition}, volume = {39}, number = {4}, year = {2000}, note = {ISI Document Delivery No.: 286YKTimes Cited: 17Cited Reference Count: 24}, pages = {767-+}, type = {Article}, keywords = {arene complexes, COORDINATION, DIANION, fluxionality, lanthanides, MOLECULAR-STRUCTURE, YTTRIUM}, isbn = {1433-7851}, url = {://000085476300019}, author = {Fryzuk,Michael D. and Jafarpour, L. and Kerton, F. M. and Love, J. B. and Rettig, S. J.} }