Coordination d'anions organophosphorés. IV. Préparation et identification cristallographique de différentes phases de nitratocomplexes du cobalt(II), du nickel(II) et du zinc(II)

Chemical preparations and crystal data are described for the new nitratocomplexes {M(NO3)L} where M²⁺ is a metallic ion Co²⁺, Ni²⁺, Zn²⁺ and L^- the anion {(C₂H₅O)₂P(O)CHCOCH₂R}^- with R an amino group. The isolation of one or many crystalline forms depends on the nature of the radical R. These different species have been characterized by their space groups and the powder patterns of the monoclinic forms have been indexed from the single-crystal dimensions.