In the title complex, [Co(C(15)H(12)Br(2)NO)(2)], the Co(II) atom is four-coordinated by two N,O-bidentate chelate Schiff base ligands, displaying a flattened tetra-hedral coordination environment. The Co(II) atom occupies a special position on a twofold rotation axis. In the crystal, mol-ecules are linked via weak C-H⋯Br inter-actions.

An asymmetric erbium(III) Schiff base complex [Er(HL)2(NO3)3] was synthesized which shows SMM behaviour with an Ueff of 5.2 K. Dipolar interaction in 1 significantly reduced upon dilution which increases the barrier height to 51.5 K. Ab initio calculations were performed to shed light on the mechanism of magnetization relaxation.

A new chiral cyclic triimidazoline salt and its chiral N-heterocyclic carbene trisilver(I) cylinder-like cage was prepared via self-assembly, with size-selective catalytic performance for the cyanosilylation of several Schiff-base compounds.

The Zn(II) atom in the title compound, [Zn(C(8)H(7)N(3)O(2)S)(C(10)H(8)N(2))], is N,N'-chelated by the heterocycle and N,O,S-chelated by the doubly deprotonated Schiff base ligand in a distorted square-pyramidal environment. O-H⋯O and N-H⋯N hydrogen bonds link adjacent mol-ecules into a layer structure.

The Zn(II) atom in the title compound, [Zn(C(10)H(12)N(3)S)(2)], is N,S-chelated by the deprotonated Schiff base in a tetra-hedral environment. The metal atom lies on a twofold rotation axis that relates one anion to the other. The amino H atom forms an intermolecular N-H⋯π inter-action to an aromatic ring.

In the title complex, [Ni(C(21)H(15)ClN(2)O(2))], the Ni(II) ion is coordinated by two N and two O atoms from the tetra-dentate Schiff base ligand in a distorted square geometry. The crystal packing exhibits short inter-molecular Ni⋯Ni distances of 3.273 (3) Å.

In the title complex, [Zn(C(11)H(12)NO(2))(2)], the Zn(2+) ion (site symmetry 2) is coordinated by two N,O-bidentate Schiff base ligands, generating a tetra-hedral ZnO(2)N(2) geometry for the metal ion.

The asymmetric unit of the title compound, C(16)H(12)F(4)N(2), comprises half of the potentially bidentate Schiff base ligand, with an inversion centre located at the mid-point of the central C-C bond. The crystal packing is stabilized by inter-molecular C-H⋯N and π-π inter-actions [centroid-centroid distance = 3.6793 (12) Å and inter-planar spacing = 3.4999 (7) Å].

We report the isolation, characterization, and reactions of the unsaturated complex L(tBu)Co (L(tBu) = bulky β-diketiminate ligand). The unusual slipped κN,η(6)-arene binding mode in L(tBu)Co interconverts rapidly and reversibly with the traditional κ(2)N,N' ligation mode upon binding of Lewis bases, making it a "masked" two-coordinate complex. The mechanism of this isomerization is demonstrate...

In the title compound, [ZnCl(2)(C(20)H(20)N(2))], the Zn(II) atom is four coordinated in a distorted tetra-hedral geometry by two N atoms of the Schiff base ligand and by two Cl atoms. Edge-to-face C-H⋯π inter-actions exist between mol-ecules, with a dihedral angle of 37.8 (1)° between the benzene ring planes and a shortest H⋯centroid distance of 3.62 (5) Å.