Phosphide complexes of divalent europium: Synthesis and structural characterization of Eu[PPh2]2(N-MeIm)4

Article abstract of DOI:10.1016/S0020-1693(97)05611-9

The synthesis and X-ray crystal structure determination of a bis(phosphido) complex of divalent europium, Eu[PPh₂]₂(N-MeIm)₄ (1), is reported. Complex 1 crystallizes in the monoclinic space group P2₁/n. Crystal data for 1 at 298 K: a=10.016(5), b=18.018(8), c=11.218(5) A, β=95.45(3)°; V=2015(2) A°³; Z=2; D_calc=1.402 g cm^-3; R_F=4.59%. The molecular structure of 1 shows the hexa-coordinate lanthanide atom (on an inversion center) in a distorted octahedral environment with the phosphide ligands in trans positions.