(E)-N′-(2,4,5-Trimethoxybenzylidene)isonicotinohydrazide dihydrate

H S Naveenkumar,Chin Sing Yeap,Pazilah Ibrahim,Hoong-Kun Fun,Amirin Sadikun

doi:10.1107/s1600536810015254

H S Naveenkumar, Chin Sing Yeap + Show 3 more

Open Access

https://doi.org/10.1107/s1600536810015254

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Abstract

The asymmetric unit of the title compound, C16H17N3O4·2H2O, contains one Schiff base molecule and two water molecules. The Schiff base molecule exists in an E configuration with respect to the C=N double bond and is essentially planar, the dihedral angle between the benzene and pyridine rings being 5.48 (8)°. The three methoxy groups are also coplanar with the benzene ring [C—O—C—C torsion angles = 3.9 (2), 178.51 (15) and 0.8 (2) Å]. In the crystal structure, the water molecules link the molecules into a three-dimensional network via intermolecular N—H⋯O, O—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds.

Highlights

The asymmetric unit of the title compound, C16H17N3O42H2O, contains one Schiff base molecule and two water molecules
The Schiff base molecule exists in an E configuration with respect to the C N double bond and is essentially planar, the dihedral angle between the benzene and pyridine rings being 5.48 (8)
The three methoxy groups are coplanar with the benzene ring [C—O—C—C torsion angles =

Summary

Crystal data

R factor = 0.034; wR factor = 0.126; data-to-parameter ratio = 9.7. The asymmetric unit of the title compound, C16H17N3O42H2O, contains one Schiff base molecule and two water molecules. The Schiff base molecule exists in an E configuration with respect to the C N double bond and is essentially planar, the dihedral angle between the benzene and pyridine rings being 5.48 (8). The three methoxy groups are coplanar with the benzene ring [C—O—C—C torsion angles =. The water molecules link the molecules into a three-dimensional network via intermolecular N—H O, O—H O, O—H N and C—H O hydrogen bonds

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