Tetramethylammonium hexanitratoneodymiate(III).: Structural variations of the [Nd(NO3)6]3- anion in a single crystal

The structure of tetramethylammonium hexanitratoneodymiate(III) has been determined at 123K in the suprisingly low symmetry space group P-(1) over bar considering the simplicity of the compound. The structure has Z'=4 with seventeen distinct chemical fragments in the asymmetric unit (12 tetramethylammonium cations, three complete [Nd(NO3)(6)](3-) anions and two half [Nd(NO3)(6)](3-) species situated on special positions). This one structure contains five different coordination geometries of the [Nd(NO3)(6)](3-) species.