Chiral one-dimensional hydrogen bonded, antiferromagnetic chloro-bridged dinuclear copper(II) complex with tridentate Schiff base ligand

Chiral one-dimensional hydrogen bonded copper(II) complex [Cu(HL1)Cl]2·H2O (1) (HL1 = N-(2-hydroxyethyl)-5-nitrosalicylaldimine) has been synthesized and characterized by elemental analysis, crystal structure analysis and magnetic susceptibility. X-ray diffraction studies show that 1 is a binuclear copper(II) complex with a pair of chlorine atoms bridging the copper atoms in a central Cu2Cl2 core. Each copper(II) atom is five-coordinated in a square-pyramidal environment. Variable-temperature magnetic susceptibility measurements on the a binuclear complex 1 in the range 2–300 K indicate a weak antiferromagnetic coupling between the binuclear copper(II) centers, with J = −0.274 cm−1 and the magneto-structural correlations are discussed in detail.

Graphical abstractChiral one-dimensional hydrogen bonded copper(II) complex [Cu(H2L1)Cl]2·H2O (1) (H2L1 = N-(2-hydroxyethyl)-5-nitrosalicylaldimine) has been synthesized and characterized by elemental analysis, crystal structure analysis and magnetic susceptibility.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A new chiral one-dimensional hydrogen bonded copper(II) complex. ► The crystal structure of the complex 1, has been determined by single crystal diffraction at 100 K. ► Temperature dependent magnetic susceptibility has been investigated. ► Complex 1 shows antiferromagnetic spin-exchange interaction.