Аннотация:Nitrate complexes (NC) of transition metals are of great interest with their original crystal structure, due to the geometric features of the nitrate group, which can exhibit variable denticity in combination with various bridging functions. NC are capable of forming structures of various dimensions, which may contain both isolated anions and polynuclear coordination polymers (chains, ribbons, layers, or three-dimensional frameworks). Among various systems studied in terms of low-dimensional magnetism [1], anhydrous transition metal nitrates stand out by peculiar properties stemming from the frustration ofleading exchange interactions.