STUDIES ON ORGANOLANTHANIDE COMPLEXES .49. SYNTHESIS OF MIXED TRIS-CYCLOPENTADIENYL LANTHANIDE COMPLEXES, (CH3OCH2CH2C5H4)LN(C5H5)2, CONTAINING ONE INTRAMOLECULAR COORDINATION BOND, CRYSTAL-STRUCTURE OF (CH3OCH2CH2C5H4)Y(C5H5)2
Ct. Qian et al., STUDIES ON ORGANOLANTHANIDE COMPLEXES .49. SYNTHESIS OF MIXED TRIS-CYCLOPENTADIENYL LANTHANIDE COMPLEXES, (CH3OCH2CH2C5H4)LN(C5H5)2, CONTAINING ONE INTRAMOLECULAR COORDINATION BOND, CRYSTAL-STRUCTURE OF (CH3OCH2CH2C5H4)Y(C5H5)2, Polyhedron, 12(18), 1993, pp. 2265-2269
By the one-pot reaction of lanthanide trichloride with 2 equivalents o
f sodium cyclopentadienyl and 1 equivalent of sodium 2-methoxyethylcyc
lopentadienyl in THF, the mixed tricyclopentadienyl lanthanide complex
es (C5H5)2Ln(CH3OCH2CH2C5H4) (Ln = La, Sm, Gd, Er, Yb, Y) were obtaine
d. The compound (CH3OCH2CH2C5H4) Y(C5H5)2 (6) crystallized from THF. T
he central metal Y is coordinated to three cyclopentadienyl ring centr
oids and the ether oxygen forming a distorted tetrahedron. The average
Y-C(eta5) bond distance and Y-O bond distance of 6 are 2.702 and 2.41
4 angstrom, respectively.