The asymmetric unit of the title complex, [Cu(C(11)H(16)N(3)O)]ClO(4), consists of two Cu(II) ions coordinated by Schiff base ligands and two perchlorate anions. The Schiff base mol-ecules are linked to the Cu(II) atoms via three N atoms and one O atom, resulting in a square-planar geometry. Inter-molecular hydrogen bonds involving the NH groups as donors and O atoms of the perchlorate anions a...

Copper catalyzed [3+2] cycloaddition "click method" provided an efficient and high yielding immobilization of cobalt(II) Schiff base to the azido-functionalized MeOPEG(5000); whereas the direct reaction between MeOPEG(5000) and Co(II) Schiff base did not produce any immobilization. The prepared catalyst was tested for the oxidative dehydrogenation of various secondary amines using TBHP as oxida...

A stable hydrogen photogeneration system containing fluorescein as a photosensitizer with nickel(II) chloride as a catalyst precursor in basic solution was found to undergo in situ photoreduction of nickel(II) to zero-valent Ni nanoparticles to catalyze highly efficient hydrogen evolution under visible light irradiation.

The title complex, [ZnBr(2)(C(11)H(17)N(3))], is a mononuclear zinc(II) compound derived from the Schiff base N-propyl-N'-(1-pyridin-2-ylmethyl-idene)ethane-1,2-diamine. The Zn(II) atom is five-coordinate, binding to the imine N, pyridine N, and amine N atoms of the Schiff base ligand and to two bromide anions in a distorted trigonal-bipyramidal coordination geometry. Adjacent mol-ecules are li...

In the title complex, [Co(NCS)(2)(C(13)H(11)N(3)O)(2)], the Co(II) centre adopts a distorted octa-hedral coordination geometry with two cis-bidentate Schiff base ligands and two cis thio-cyanate ligands. The Schiff base ligand coordinates via the imine N and pyridine N atoms. The Co(II) atom lies on a crystallographic twofold rotational axis. Non-classical inter-molecular C-H⋯O hydrogen bonds l...

In the title mononuclear Schiff base copper(II) complex, [Cu(C(12)H(16)BrN(2)O)(NCS)], the Cu(II) ion is coordinated by two N atoms and one O atom from a Schiff base ligand, and by one N atom from a thio-cyanate anion, giving a square-planar geometry. There are long-range inter-actions between the Cu atom and S [3.151 (5) Å] and Br [3.929 (5) Å] atoms above and below the square plane.

In the centrosymmetric title dinuclear zinc(II) compound, [Zn(2)(C(14)H(13)N(2)O)(2)(N(3))(2)], each Zn(II) ion has a slightly distorted trigonal bipyramidal geometry and is coordinated by two N atoms and one O atom from one Schiff base ligand, an O atom from the other Schiff base ligand, and another N atom from an azide ligand. The crystal structure involves inter-molecular C-H⋯N hydrogen bonds.

one of the best and the most active ways for surveying thermal behaviour of materials is using differential scanning calorimetry. in this paper, the authors have studied thermal behaviour for schiff base ligand and their synthesized cobalt, nickel complexes. in this method, the sample is opposed to a controlled temperature change and its physical properties. here we studied melting point and tg...

Metal chelates, [M(HL)2(H2O)2]X2 (where M= Mn(II), Co(II), Cu(II), Ni(II) or Zn(II), X= NO3–or Cl– and HL= Schiff base moiety), have been prepared and characterized by elemental analysis, magnetic and spectroscopic measurements (infrared, X-ray powder diffraction and scanning electron microscopy). Elemental analysis of the metal complexes was suggested that the stoichiometry is 1:2 (metal-ligan...

Two series of chiral salicylaldimine-based liquid crystals which differ from each other in the position of the (S)-2-octyloxy tail have been synthesized and characterized by polarizing optical microscopy, differential scanning calorimetry, and electrical switching. Compounds OH I (n = 6-7) having (S)-2-octyloxy tail close to the salicylaldimine core and compounds OH II (n = 6-11) having (S)-2-o...