Synthetic Route of C5H7N3In 2021 ,《Tris(oxalato)chromate(III) hybrid salts templated by pyridinium and mixed pyridinium-ammonium cations: synthesis, structures and magnetism》 was published in Journal of Coordination Chemistry. The article was written by Choubeu, Coustel M. N.; Ndosiri, Bridget N.; Vezin, Herve; Minaud, Claire; Orton, James B.; Coles, Simon J.; Nenwa, Justin. The article contains the following contents:
By modifying the stoichiometric ratio of starting materials, two tris(oxalato)chromate(III) salts, (C7H11N2)3[Cr(C2O4)3] and (C5H8N3)2(NH4)[Cr(C2O4)3]·2H2O {(C7H11N2)+ = 2-amino-4,6-dimethylpyridinium, (C5H8N3)+ = 2,6-diaminopyridinium}, were synthesized and characterized by elemental and thermal analyses, single-crystal x-ray diffraction, IR and UV – visible spectroscopies, EPR and SQUID measurements. Salt exhibits a 3-D supramol. framework based on [Cr(C2O4)3]3- and 2-amino-4,6-dimethylpyridinim cations, (C7H11N2)+, via N-H···O hydrogen bonds. π-π Stacking interactions between pyridine rings contribute to the stabilization of the crystal packing. In contrast to salt, no π-π stacking interactions are observed in the mixed-cation salt and its crystal packing is consolidated by N-H···O and O – H···O hydrogen bonds. EPR spectra of and are consistent with the oxidation state +3 of the chromium center in an octahedral environment. Temperature-dependence of the magnetic susceptibility data studied from 2 to 300 K revealed the existence of zero-field splitting effects (ZFS) for Cr(III) ions in both compounds In the experiment, the researchers used 2,6-Diaminopyridine(cas: 141-86-6Synthetic Route of C5H7N3)
2,6-Diaminopyridine(cas: 141-86-6) belongs to pyridine. Pyridine and its simple derivatives are stable and relatively unreactive liquids, with strong penetrating odours that are unpleasant.Synthetic Route of C5H7N3