Name: 1H-Pyrazole-5-carbaldehyde. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1H-Pyrazole-5-carbaldehyde, is researched, Molecular C4H4N2O, CAS is 948552-36-1, about Supramolecular triangular and linear arrays of metal-radical solids using pyrazolato-silver(I) motifs. Author is Yamada, Susumu; Ishida, Takayuki; Nogami, Takashi.
New chelating radical ligands pzNNH, pzINH, and pzbisINH (3-pyrazolylnitronyl nitroxide, 3-pyrazolylimino nitroxide, and pyrazole-3,5-diylbis(imino nitroxide), resp.) were prepared Complexation of these ligands with Ag+ gave [Ag(pzNN)]n, [Ag(pzIN)]6, and [Ag(pzbisIN)]n containing the corresponding anionic forms of the ligands. From the x-ray crystal structure anal., [Ag(pzIN)]6 was characterized as a dimer of almost planar triangular moieties where the pyrazolate worked as a bridge, and metal-metal bonds brought about dimerization of triangles. [Ag(pzbisIN)]n was characterized as a uniform zigzag chain consisting of pyrazolate bridges and Ag ions with a cis-Npz-Ag-Npz coordination structure. Antiferromagnetic interactions observed could be analyzed based on the structures determined for both compounds Ferromagnetic coupling was observed in [Ag(pzNN)]n, and a polymeric structure was assumed although the crystal structure could not be determined Novel supramol. architectures using pyrazolate-substituted imino nitroxides were developed, using the unique coordinative versatility of the pyrazolate derivatives
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