The title Schiff base compound, C(27)H(19)ClN(4)O, features two intra-molecular O-H⋯N and N-H⋯N hydrogen bonds involving the hydr-oxy and amino groups to generate S(6) and S(5) ring motifs, respectively. In the crystal structure, weak inter-molecular N-H⋯O and C-H⋯N inter-actions, together with π-π contacts [centroid-centroid distances = 3.6294 (11)-3.6881 (11) Å], link neighboring mol-ecules.

Quantitative estimation of the structure-anticancer activity relationship in a series of macrocyclic Schiff bases of 2,6-bis(formylaryloxymethyl)pyridines was carried out by the topological approach. Correlation equations describing the relationship between the anticancer activity and structural parameters of the molecules studied and descriptors characterizing their structure were obtained on ...

The removal of 75% of the lipid from bacteriorhodopsin caused the following: (i) decreased efficiency and rate of deprotonation of the protonated Schiff base (as monitored by absorption of the M412 intermediate); (ii) increased efficiency of deprotonation of deionized samples; (iii) a decrease by 1 unit in the pH at which deprotonation ceases; (iv) increased intensity of Eu3+ emission in Eu3+-r...

In the title compound, [Ni(C(19)H(18)Br(2)N(2)O(2))], the Ni(II) ion, lying on a twofold rotation axis, is coordinated by two N atoms and two O atoms from the Schiff base ligand in a distorted square-planar geometry. Weak inter-molecular C-H⋯O hydrogen bonds stabilize the crystal structure.

In the crystal structure of the title Schiff base, C(20)H(25)N(3)O(2), the salicylaldimine groups at each end of the mol-ecule are essentially planar and make a dihedral angle of 84.94 (3)° with each other. There are strong intra-molecular O-H⋯N hydrogen bonds and a weak inter-molecular N-H⋯O hydrogen bond.

The asymmetric unit of the crystal structure of the title compound, [Ni(C(14)H(19)N(2)O(3))(2)], contains two independent Ni(II) complex mol-ecules, with the metal atoms each located on a center of inversion. Each metal atom is chelated by two Schiff base anions in a distorted square-planar coordination environment.

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In the title compound, [Cu(C(11)H(11)NO(3))(C(11)H(16)N(4))]·H(2)O, the Cu(II) atom is five-coordinate in a distorted square-pyramidal geometry. The basal positions are occupied by three donor atoms from the tridentate Schiff base ligand and by one N atom from a bis-(3,5-dimethyl-prazol-l-yl)methane ligand. The apical position is occupied by the N atom of the other ligand of this type. There ar...

The Schiff base (E)-4-chloro-2-[(pyridin-2-yl-imino)-meth-yl]phenol was reacted with InCl(3)·4H(2)O, generating the title molecular salt, (C(5)H(7)N(2))(3)[InCl(6)]. The octa-hedral hexa-chlorido-indate(III) anion is located on an inversion centre, and one half of the anion and two crystallographically independent cations form the asymmetric unit. One of the cations is located on a twofold rota...