[N,N′-Bis(2,6-dichloro­benzyl­idene)propane-1,3-diamine-κ²N,N′]dibromidozinc

In the title compound, [ZnBr₂(C₁₇H₁₄Cl₄N₂)], the Zn^II ion is bonded to two bromide ions and two N atoms of the diimine ligand and displays a moderately distorted tetra­hedral coordination geometry. The Schiff base ligand acts as a chelating ligand and coordinates to the Zn^II atom via two N atoms.

[4-Bromo-N-(pyridin-2-yl­methyl­idene)aniline-κ²N,N′]iodido(triphenyl­phosphane-κP)copper(I)

In the title compound, [CuI(C₁₂H₉BrN₂)(C₁₈H₁₅P)], the Cu^I ion is bonded to one I atom, one triphenyl­phosphane P atom and two N atoms of the diimine ligand in a distorted tetra­hedral geometry. The Schiff base acts as a chelating ligand and coordinates to the Cu^I atom via two N atoms. In the diimine ligand, the dihedral angle between the pyridine and bromo­phenyl rings is 19.2 (2)°. In the crystal, mol­ecules are connected by π–π stacking inter­actions between inversion-related pyridine rings [centroid–centroid distance = 3.404 (3) Å].

[N,N′-Bis(2,3,4-trimeth­oxy­benzyl­idene)­ethane-1,2-diamine-κ²N,N′]dibromido­mercury(II)

In the title compound, [HgBr₂(C₂₂H₂₈N₂O₆)], the Hg^II ion is bonded to two Br⁻ ions and two N atoms of the chelating Schiff base ligand in a distorted tetra­hedral geometry. The Schiff base ligand adopts an E,E conformation. The dihedral angle between the planes of the two halves of the central N,N′-dimethyl­ethylenediamine part of the ligand is 2.3 (11)°. The crystal studied was twinned by pseudomerohedry [twin law (0-10/-100/00-1)]; the contribution of the minor twin component refined to 0.208 (3).

2-[(4-Meth­oxy-2-nitro­phen­yl)imino­meth­yl]phenol

The crystal structure of the title compound, C₁₄H₁₂N₂O₄, contains four crystallographically independent mol­ecules in the asymmetric unit. All the mol­ecules have similar conformations; the dihedral angles between the aromatic rings are 33.1 (1), 33.76 (9), 31.41 (9) and 32.56 (10)°. Intra­molecular O—H...N hydrogen bonds form S(6) ring motifs in each molecule. In the crystal, there are two pairs of pseudo-inversion-related mol­ecules. Along the c axis, mol­ecules are stacked with π–π inter­actions between the 2-hy­droxy­phenyl and 4-meth­oxy-2-nitro­phenyl rings [centroid–centroid distances = 3.5441 (12)–3.7698 (12) Å].

(E)-4-[(4-Bromo­phen­yl)imino­meth­yl]-2-meth­oxy­phenol

In the crystal structure of the title compound, C₁₄H₁₂BrNO₂, the dihedral angle between the rings is 37.87 (10)° and the mol­ecule has an E conformation about the central C=N bond. In the crystal, mol­ecules are connected by inter­molecular O—H...N hydrogen bonds into zigzag chains running parallel to the b axis. The packing also features C—H...O inter­actions.

4-[(E)-(4-Eth­oxy­phen­yl)imino­meth­yl]phenol

In the title compound, C₁₅H₁₅NO₂, the dihedral angle between the benzene rings is 52.04 (5)° and the mol­ecule has an E conformation about the central C=N bond. In the crystal, mol­ecules are connected by O—H...N hydrogen bonds, forming zigzag chains along the b axis. The crystal packing also features weak C—H...O inter­actions.