Shah Bakhtiar Nasir

2-(3-Meth­oxy­phen­oxy)pyrimidine

In the title compound, C11H10N2O2, the benzene ring faces towards one of the pyrimidine N atoms, and is almost orthogonal to the plane through the pyrimidine ring [dihedral angle = 84.40 (14)°]. In the crystal, the presence of C—H⋯π and π–π [centroid–centroid separation = 3.7658 (18) Å] interactions leads to a supramolecular array in the ac plane. The layers thus formed interdigitate along the b axis.

2-(4-Methoxyphenoxy)-3-nitropyridine

In the title molecule, C12H10N2O4, the pyridine and benzene rings are almost orthogonal [dihedral angle = 86.69 (11)°], with the pyridine N atom directed towards the centre of the benzene ring. The –NO2 [O—N—C—C = −26.1 (3)°] and –OMe [C—O—C—C = 166.5 (2)°] substituents are not coplanar with their respective aromatic rings. In the crystal, supramolecular layers in the ab plane are formed via C—H⋯π interactions involving methyl H atoms and the pyridine and benzene rings. Short N—O⋯π contacts (where the π-system is derived from the pyridine ring) occur between layers in the c-axis direction.

2-(4-Methyl-phen-oxy)-5-nitro-pyridine.

The title molecule, C12H10N2O3, is twisted, the dihedral angle between the rings being 61.16 (13)°. The nitro group is approximately coplanar with the pyridine ring to which it is attached [O—N—C—C torsion angle = −178.1 (3)°]. Supramolecular chains along [010] and mediated by C—H⋯O and π–π [centroid(pyridyl)–(benzene) distance = 3.8259 (18) Å] contacts feature in the crystal packing.

Tetra-μ-acetato-κO:O'-bis-[(2-phen-oxy-pyrimidine-κN)copper(II)](Cu-Cu).

The complete dinuclear molecule of the title complex, [Cu2(CH3COO)4(C10H8N2O)2], is generated by a centre of inversion. The CuII atom is in a distorted octahedral coordination geometry defined by four O atoms derived from four bridging acetate ligands, a terminally connected pyrimidine N atom and a Cu atom.

2-(2-Meth­oxy­phen­oxy)-3-nitro­pyridine

In the title compound, C12H10N2O4, the pyridine and benzene rings are almost orthogonal, forming a dihedral angle of 86.63 (6)°. Each of the nitro [O—N—C—C torsion angle = −6.45 (19)°] and methoxy [C—O—C—C torsion angle = 179.69 (11)°] groups is almost coplanar with the ring to which it is connected. Molecules are consolidated in the crystal structure via C—H⋯O interactions, forming a three-dimensional network.

2-(Naphthalen-2-yl­oxy)-5-nitro­pyridine

A nearly orthogonal relationship is found for the ring systems in the title compound, C15H10N2O3, with the dihedral angle between the rings being 86.13 (11)°. The nitro group is approximately coplanar with the pyridine ring to which it is connected [the O—N—C—C torsion angle = −1.8 (4)°]. This coplanarity allows for the close approach of these residues in the crystal structure enabling the formation of N—O⋯π(pyridine) interactions [3.547 (4) Å]. Further consolidation of the crystal packing is afforded by weak π–π interactions [centroid–centroid distances = 3.9576 (16) and 3.9822 (16) Å].

2-(Pyrimidin-2-yl-oxy)phenol.

The pyrimidine and benzene rings in the title compound, C10H8N2O2, form a dihedral angle of 71.03 (7)°, with the roughly orthogonal benzene ring being folded towards one of the pyrimidine N atoms. In the crystal, pairs of O—H⋯N hydrogen bonds connect molecules related by twofold symmetry into dimeric aggregates. These associate into a supramolecular chain propagating along the b axis by way of C—H⋯π contacts. The chains are cross-linked by π–π interactions that occur between pyrimidine rings [ring centroid–centroid distances = 3.5393 (9) and 3.5697 (9) Å].

2-(4-Meth­oxy­phen­oxy)pyrazine

In the title compound, C11H10N2O2, the aromatic rings are almost orthogonal to each other [dihedral angle = 86.97 (8)°], with the benzene ring orientated to face one of the pyrazine N atoms. In the crystal, centrosymmetrically related pairs are connected via pairs of C—H⋯π interactions and the dimeric units thus formed pack into undulating layers that stack along the a axis.