
TY  - JOUR
A1  - Deacon, Glen B. 
A1  - Forsyth, Craig M. 
A1  - Gatehouse, Bryan M. 
A1  - Philosof, Anna 
A1  - Skelton, Brian W. 
A1  - White, Allan H. 
A1  - White, Paul A. 
T1  - Organolanthanoids. XXI Synthesis of Bis- and Tris-(diphenylphosphinocyclopenta- dienyl)lanthanoid Compounds and the X-Ray Crystal Structures of [Ln(C<emph tye="8">5</emph>H<emph tye="8">4</emph>PPh<emph tye="8">2</emph>)<emph tye="8">3</emph>(OPPh<emph tye="8">3</emph>)]<emph tye="8">&#183;</emph>(thf)<emph tye="8">1 </emph>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1997
VL  - 50
IS  - 10
SP  - 959
EP  - 970
KW  - 
UR  - https://doi.org/10.1071/C97125 
N2  - Redox transmetallation ofTl(C5H4PPh2)with an excess of Sm in refluxing thf (thf = tetrahydrofuran) or Eu indme (dme = 1,2-dimethoxyethane) at room temperature gave thelanthanoid(II) compounds&#91;Sm(C5H4PPh2)2&#93;(1) and&#91;Eu(C5H4PPh2)2(dme)&#93;(2). Crystallization of (1) or&#91;Yb(C5H4PPh2)2(dme)&#93;with OPPh3 in dme yielded&#91;Sm(C5H4PPh2)2(OPPh3)2&#93;(3) and&#91;Yb(C5H4PPh2)2(OPPh3)2&#93;(4). Room-temperature transmetallation ofTl(C5H4PPh2)with Nd gave the lanthanoid(III) compound&#91;Nd(C5H4PPh2)3(thf)&#93;(5), but analogous reactions with La, Pr, Er, Gd and Y in refluxing thfgenerally gave intractable oils, although in one instance impure&#91;La(C5H4PPh2)3(thf)&#93;&#183;(thf)0 &#183; 5,namely(6)&#183;(thf)0 &#183; 5, wasisolated. This complex was also obtained at room temperature by usingLaI3-activated La metal. Oxidation of (1) with 1 equiv.ofTl(C5H4PPh2)in toluene yielded solvent-freeSm(C5H4PPh2)3(7). Addition of OPPh3 to these systems allowed theisolation of&#91;Ln(C5H4PPh2)3(OPPh3)&#93;&#183;(thf)x(x = 0-1 &#183; 5; Ln = La (8), Pr (9),Nd (10), Sm (11), Er (12), Y (13)). Single-crystal X-ray structuredetermination of(10)&#183;(thf)1 &#183; 5,(11)&#183;(thf)1 &#183; 5 and(12)&#183;(thf)1 &#183; 5revealed formally 10-coordinate complexes with an O-bondedOPPh3, three&#x03B7;5-C5H4PPh2ligands and lattice thf. The centroids of the C5 ringsand the oxygen atom surround the central metal in a distorted tetrahedralarray. 
ER  -

