Polynuclear Copper-Lanthanide Complexes with Amino Alcohol Ligands. Syntheses, Structures, and Magnetic and Spectroscopic Studies of CuII(bdmmp)2(H2O), PrIIICuII(bdmmp)(bdmmpH)(.mu.-OH)(hfacac)3, [LaIIICuII(bdmmp)(bdmmpH)(.mu.-OH)(O2CCF3)3]2, and CuII4(bdmmp)2(.mu.4-O)(O2CCF3)4, (bdmmpH = 2,6-Bis[(dimethylamino)methyl]-4-methylphenol; hfacac = Hexafluoroacetylacetonato)