Binary Polyazides of Cerium and Gadolinium

Herein, we report on the preparation and full characterization (melting point, ATR-IR/Raman, elemental analysis, N-14 NMR) of binary gadolinium(III) azide as DMSO solvate Gd(N-3)(3)(8)/3DMSO (DMSO = dimethylsulfoxide), along with the partially hydroxide substituted species Gd-4(OH)(2)(N-3)(10)nDMSO (n = 8, 10). Moreover, the isolation and comprehensive characterization of hexaazido lanthanate(III) anions [Ln(N-3)(6)](3-) (Ln = Ce, Gd) in a series of [Ph4P](+) and [EtPh3P](+) salts is presented. Single-crystal structures of all compounds were determined, and the magnetic susceptibility in solution (NMR, Evans Method), as well as in the solid state (VSM), was investigated.