Coordination Geometries of Solvated Lanthanide(II) Ions - Molecular-Structures of the Cationic Species ((Dime)(3)Ln)(2+) (Dime=diethylene Glycol Dimethyl Ether Ln2+=sm, Yb), ((Dime)(2)Yb(CH3CN)(2))(2+), ((Dime)Yb(CH3CN)(5))(2+), and ((C5H5N)(5)Yb(CH3CN)(2))(2+) (Vol 33, Pg 1691, 1994)