[(THF)(2)NA(PH2N)(2)SM(N(SIME3)(2))(2)], AN AMIDO COMPLEX OF SAMARIUMWITH A SANDWICH-LIKE COORDINATED SODIUM-ION

The title compound has been prepared from Sm[N(SiMe3)(2)](3), NaN(SiMe 3)(3), and HNPh2 in THF solution forming yellow-green single crystals, which were characterized by a crystal structure determination. The co mplex forms an ion pair in which the sodium ion is coordinated by two THF molecules and by two phenyl groups of the diphenyl-amido groups in a sandwich-like fashion. The samarium atom is tetrahedrally coordinat ed by the four nitrogen atoms of the NPh2- and the N(SiMe3)(2)(-) liga nds.