A new cyano-bridged coordination polymer network Tb(H2O)5-[Mo(CN)8] was obtained and characterized. This compound has a two-dimensional layered structure and presents luminescence along with a magnetic transition at low temperature.

The reaction of anhydrous SmCl 3 with two equivalents of lithium N,N´ diisopropyl N″ bis(trimethylsilyl)guanidinate in THF afforded the [{(Me 3 Si) 2 NC(NPr i ) 2 } 2 SmCl] 2 complex (1) in 82% yield. Analogous reactions with YCl 3 and GdCl 3 produced the ate complexes {(Me 3 Si) 2 NC(NPr i ) 2 } 2 Ln(µ Cl) 2 Li(THF) 2 (Ln = Y (2) and Gd (3)). The structures of com plexes 1 and 2 were established by X ray diffraction. The reaction of complex 1 with NaBH 4 in hexane (20 °C) followed by treatment with dimethoxyethane yielded the unexpected product, {(Me 3 Si) 2 NC(NPr i ) 2 }Sm(µ 3 BH 4 ) 2 (DME) (5). X ray diffraction study showed that both boro hydride ligands in complex 5 are tridentate.