(E)-4-Methoxy-N′-[(6-methyl-4-oxo-4H-chromen-3-yl)methylidene]benzohydrazide monohydrate
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چکیده
In the title hydrate, C19H16N2O4·H2O, the 4H-chromen-4-one segment is slightly twisted, with a dihedral angle between the two six-membered rings of 3.30 (5)°. The dihedral angles between the plane of the pyran-one ring and the hydrazide plane and between the planes of the pyran-one ring and the benzene ring of the p-meth-oxy-benzene unit are 26.69 (4) and 2.23 (3)°, respectively. The mol-ecule is connected to the solvent water mol-ecule by an N-H⋯O hydrogen bond. In the crystal, there are π-π stacking inter-actions between centrosymmetrically related pyran-one rings [centroid-centroid distance = 3.5394 (9) Å], as well as bridges formed by the water mol-ecules via O-H⋯O hydrogen bonds.
منابع مشابه
(E)-3,4,5-Trimethoxy-N′-[(4-oxo-4H-chromen-3-yl)methylidene]benzohydrazide
In the title chromone-tethered benzohydrazide derivative, C20H18N2O6, the atoms of the E-3-(hydrazonometh-yl)-4H-chromen-4-one segment are essentially coplanar, the largest deviation being 0.065 (6) Å. The dihedral angle between this segment and the benzene ring of the tri-meth-oxy-benzene unit is 40.18 (10) Å. In the crystal, the mol-ecule is linked to its inverse-symmetry equivalent by pairs ...
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