ABSTRACT: In the title compound, [Ni(C(19)H(16)Cl(4)N(2)O(2))], the Ni(II) ion is in a distorted square-planar environment coordinated by two N atoms and two O atoms of the tetra-dentate ligand. The dihedral angle between the benzene rings is 24.8 (2)°. In the crystal, mol-ecules are linked into chains along the b axis by weak C-H⋯O and C-H⋯Cl inter-actions. An inter-molecular Cl⋯Cl [3.4564 (19) Å] inter-action is present which is shorter than the sum of the van der Waals radii of Cl atoms (3.50 Å).
Project description:The asymmetric unit of the title compound, [Ni(C(19)H(16)Br(4)N(2)O(2))], comprises half of a Schiff base complex. The geometry around the Ni(II) atom, located on a twofold rotation axis, is distorted square-planar, which is supported by the N(2)O(2) donor atoms of the coordinated ligand. The dihedral angle between the substituted benzene rings is 23.19 (17)°. In the crystal, a short inter-molecular Br⋯Br [3.6475 (7) Å] inter-action is present.
Project description:The title compound, C(17)H(14)Cl(4)N(2)O(2), is generated by crystallographic twofold symmetry. The two benzene rings are inclined to one another by 80.17?(10)°. There are two intra-molecular O-H?N hydrogen bonds, which make S(6) ring motifs. In the crystal, mol-ecules are linked by C-H?O and weak C-H?Cl inter-actions, forming a three-dimensional network.
Project description:The asymmetric unit of the title compound, [Mo(C(19)H(16)Cl(4)N(2)O(2))O(2)], comprises two independent mol-ecules (A and B). The geometry around the Mo(VI) atom is distorted octa-hedral in each complex mol-ecule, supported by two oxide O atoms and the N(2)O(2) donor atoms of the coordinating ligand. The dihedral angle between the benzene rings is 74.96?(11)?Å for mol-ecule A and 76.05?(11)?Å for mol-ecule B. In the crystal, the B mol-ecules are linked by pairs of C-H?Cl hydrogen bonds, forming inversion dimers. The crystal structure is further stabilized by C-H?? inter-actions. An inter-esting feature of the crystal structure is a Cl?Cl contact [3.3748?(18)?Å], which is shorter than the sum of the van der Waals radii of Cl atoms (3.50?Å).
Project description:In the title compound, [Cu(C(19)H(16)I(4)N(2)O(2))], the Cu(II) atom and the substituted C atom of the diamine segment lie on a crystallographic twofold rotation axis. The geometry around the Cu(II) atom is distorted square-planar, which is supported by the N(2)O(2) donor atoms of the coordinated Schiff base. The dihedral angle between the symmetry-related substituted benzene rings is 29.40 (19)°. In the crystal, a short I⋯I [3.8766 (6) Å] contact is present and links neighbouring mol-ecules into chains propagating along the a axis.
Project description:The asymmetric unit of the title compound, [Ni(C(17)H(12)I(4)N(2)O(2))], comprises half of a Schiff base complex. The Ni(II) and central C atom of the propyl chain are located on a twofold rotation axis. The geometry around the Ni(II) atom is square planar, supported by the N(2)O(2) donor atoms of the coordinated ligand. In the crystal, there are no significant inter-molecular inter-actions present. The crystal studied was a non-merohedral twin with a refined twin component ratio of 0.944?(1):0.056?(1).
Project description:In the title Schiff base complex, [Cu(C(19)H(16)Cl(4)N(2)O(2))], the geometry around the Cu(II) atom is distorted square-planar defined by the N(2)O(2) donor atoms of the coordinated ligand. The dihedral angle between the substituted benzene rings is 29.95?(16)°. In the crystal, mol-ecules are linked along the b axis, forming individual dimers through C-H?O inter-actions. The crystal structure is further stabilized by inter-molecular ?-? inter-actions [centroid-centroid distance = 3.6131?(17)?Å].
Project description:In the title compound, C(21)H(26)N(2)O(4), the dihedral angle between the substituted benzene rings is 30.47 (15) °. Two strong intra-molecular O-H⋯N hydrogen bonds generate two S(6) ring motifs.
Project description:The asymmetric unit of the title compound, [Ni(C(19)H(16)I(4)N(2)O(2))], comprises half of a Schiff base complex. The Ni(II) atom is located on a twofold rotation axis which also bis-ects the central C atom of the 2,2-dimethyl-propane group of the ligand. The geometry around the Ni(II) atom is distorted square-planar, with a dihedral angle of 21.7?(3)° between the symmetry-related N/Ni/O coordination planes. The dihedral angle between the symmetry-related benzene rings is 27.9?(3)°. In the crystal, short inter-molecular I?I [3.8178?(9) and 3.9013?(10)?Å] inter-actions are present.
Project description:In the title Schiff base complex, [Cu(C(19)H(18)Cl(2)N(2)O(2))], the Cu(II) ion is coordinated in a distorted square-planar environment by two N atoms and two O atoms of the tetra-dentate ligand. The dihedral angle between the benzene rings is 36.86?(14)°. In the crystal, mol-ecules are linked into inversion dimers by pairs of weak C-H?O hydrogen bonds. In addition, ?-? [centroid-centroid distance = 3.7279?(16)?Å] and weak C-H?? inter-actions are observed.
Project description:The title compound, C(34)H(52)N(2)O(2), is centrosymmetric, the mid-point of the central C-C bond being located on an inversion centre. Intra-molecular O-H?N and weak C-H?O hydrogen bonds are observed, but no significant inter-molecular inter-actions occur in the crystal structure.