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Catena-Poly[[[2,4-dichloro-6-{[(2-hydroxyethyl)imino]methyl}phenolato-κ3N,O,O']-copper(II)]-μ-chlorido]monohydrate]: Synthesis, structural, spectroscopic and luminescent properties

A new chloride bridged polymeric Cu(II) complex, [Cu(HL)(μ-Cl).H2O]n, 1, (H2L = 2,4-dichloro-6-{[(2-hydroxyethyl)imino]methyl}phenol) has been synthesized and characterized by elemental-spectral analysis, crystal structure analysis and photoluminescence measurements. The Copper(II) atom is five-coordinate in a slightly distorted square-pyramidal geometry (τ = 0.085), with one N and two O atoms of the Schiff base ligand and one Cl atom defining the basal plane and a symmetry-related Cl atom occupying the apical position. The bridging Cl atom lies in apical position for one Cu(II) ion and basal for the other, and it makes this structural arrangement unusual. The linked moieties form polymeric zigzag chains running along the c axis. This zigzag chains connect each other with intramolecular and intermolecular O–H···O hydrogen bonds, which form 3D structure through π?π interactions. Furthermore, the photoluminescence properties of H2L and 1 were investigated, they exhibit unique bright green visible emissions in the solid state, under the excitation of 349?nm UV light. The strong luminescence emission of them makes 1 a potentially useful photoactive material in photo-physical chemistry.

Synthesis and crystal structures of Manganese(IV) complexes with tridentate schiff bases

The complexes with the formulae [Mn(L1)2] · 0.5H2O (I) and [Mn(L2)2] (II), where L 1 and L2 are the dianionic form of 2,4-dichloro-6-[(2- hydroxyethylimino)methyl]phenol and 2-{[1-(3-ethoxy-2-hydroxyphenyl)methylidene] amino}-2-methylpropane-1,3-diol, respectively, were obtained and characterized by elemental analysis and IR spectroscopy. The crystal structures of complexes I and II were determined using X-ray diffraction. The crystal of I is orthorhombic space group Fdd2: a = 24.170(2), b = 32.021(3), c = 11.352(2) A, V = 8785.9(19) A3, Z = 8. The crystal of II is monoclinic space group C2/c: a = 13.931(4), b = 18.381(5), c = 12.444(5) A, β = 121.980(3), V = 2702.9(15) A3, Z = 4. The Mn atom in each of the complexes is in an octahedral coordination.

A Schiff base zinc compound, preparation method thereof and method for producing polylactic acid

The invention provides a schiff base zinc compound which is in a structure as shown in Formula 1, wherein R1 and R2 are independently selected from -H, alkyl, halogen and -NO2; R3, R4 and R5 are independently selected from -H and -CH3; R' is alkoxyl or -O

Mo(IV) and W(IV) cyanido complexes with Schiff bases. Synthesis, X-Ray single crystal structures, physicochemical properties and quantum chemical calculations

In the reaction of salicylaldehyde derivatives and aminoethanol with Mo(IV) or W(IV) cyanido complexes, six new salts were isolated and characterized by physicochemical measurements. The single crystal X-ray analysis of four salts of the formula (PPh