RESUMEN
The title compound, C(18)H(18)Cl(2)N(2)O(2), was synthesized by the reaction of 1-(5-chloro-2-methoxy-phen-yl)ethanone with hydrazine hydrate. The mol-ecule lies on a crystallographic twofold axis passing through the mid-point of the N-N bond with one half-mol-ecule in the asymmetric unit. The dihedral angle between the two aromatic rings is 44.33â (4)°. In the crystal, inter-molecular C-Hâ¯O inter-actions link the mol-ecules into columns along the c axis.
RESUMEN
The title compound, C(17)H(17)ClN(2)O(3), has a trans conformation about the C=N double bond and an intra-molecular O-Hâ¯N occurs. The crystal structure is stabilized by inter-molecular N-Hâ¯O hydrogen bonds.
RESUMEN
In the title compound, [Cu(C(2)H(2)IO(2))(2)(C(12)H(8)N(2))(H(2)O)], the Cu(II) ion is coordinated by two N atoms [Cu-N = 2.013â (4) and 2.024â (4)â Å] from a 1,10-phenanthroline ligand and three O atoms [Cu-O = 1.940â (4)-2.261â (4)â Å] from two carboxyl ligands and a water mol-ecule in a distorted square-pyramidal geometry. One iodo-acetate O atom [Cu-O = 2.775â (4)â Å] completes the coordination to form a distorted octa-hedron. Inter-molecular O-Hâ¯O hydrogen bonds link the mol-ecules into centrosymmetric dimers, which are further packed by π-π inter-actions between the 1,10-phenanthroline ligands into layers parallel to the ab plane. The crystal packing also exhibits short inter-molecular Iâ¯I contacts of 3.6772â (9)â Å and weak C-Hâ¯O hydrogen bonds.
RESUMEN
The two halves of the title compound, [Cu(C(2)H(2)BrO(2))(2)(C(12)H(8)N(2))], are related by twofold symmetry along the b axis through the central Cu(II) ion. The Cu(II) ion is coordinated by two symmetry-related N atoms from the 1,10-phenanthroline ligand and four O atoms from two 2-bromo-acetate ligands, showing a distorted octahedral geometry. Weak inter-molecular C-Hâ¯O inter-actions link neighbouring mol-ecules.
RESUMEN
In the title compound, C(20)H(16)N(2)O(2), intra-molecular N-Hâ¯O and inter-molecular O-Hâ¯O hydrogen bonds are found. The inter-molecular hydrogen bonds link the mol-ecules into an infinite chain along the c axis. The dihedral angles between the aromatic rings are 16.9â (3), 80.8â (3) and 64.6â (3)°
RESUMEN
In the title mol-ecule, C(12)H(12)N(2)O(3), the benzene and isoxazole rings form a dihedral angle of 5.9â (6)°. The hydr-oxy group is involved in an intra-molecular O-Hâ¯N hydrogen bond [Oâ¯N = 2.616â (5)â Å], resulting in approximate planarity of the mol-ecular skeleton. In the crystal structure, mol-ecules related by translation along the c axis are stacked into columns, the shortest inter-molecular Câ¯C distance being 3.298â (6)â Å.
RESUMEN
In the title compound, C(9)H(11)N(3)O(2)S, intra-molecular O-Hâ¯O and N-Hâ¯N hydrogen bonds contribute to the planarity of the mol-ecular skeleton. Inter-molecular N-Hâ¯O hydrogen bonds link the mol-ecules into zigzag chains along the b axis; these mol-ecules are futher paired by π-π inter-actions [centroid-centroid distance 4.495â (5)â Å]. The crystal structure also exhibits weak inter-molecular N-Hâ¯S and O-Hâ¯S hydrogen bonds.
RESUMEN
The title compound, C(18)H(20)N(2)O(3), adopts a cis conformation with respect to the C=N double bond. The crystal structure is stabilized by intra-molecular N-Hâ¯O and inter-molecular O-Hâ¯O hydrogen bonds.
RESUMEN
In the title mol-ecule, C(12)H(13)N(3)O, the phenyl and the pyrazole rings make a dihedral angle of 7.5â (2)°. Inter-molecular N-Hâ¯O hydrogen bonds involving the amino group link the mol-ecules into a three-dimensional framework.