Armando Cabrera-Ortiz

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The title compound, C(24)H(21)N(2)OP, was obtained by reacting 2-amino-pyridine and 2-(diphenyl-phosphin-yl)benzaldehyde in ethanol. It crystallizes with two crystallographically independent mol-ecules in the asymmetric unit. The amino-pyridine units and the benzene ring bonded to the phosphine oxide P atom form dihedral angles of 88.58 (7) and 82.47 (9)°(More)
In the title compound, C(13)H(16)N(4)O(2), the pyrazole ring forms a dihedral angle of 50.61 (6)° with the 3-nitro-phenyl ring. The plane of the nitro group is twisted by 6.8 (7)° out of the plane of the phenyl ring. In the crystal, the mol-ecules are linked by N-H⋯N and N-H⋯O hydrogen bonds, forming sheets in the bc plane. In addition, a weak C-H⋯N(More)
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