Halogen/azide bridged box dimer copper(II) complexes of 2-benzoylpyridine-3-methoxybenzhydrazone: Structural and spectral studies. (15th February 2018)

• Record Type: Journal Article
• Authors: Fousiamol, M.M.; Sithambaresan, M.; Smolenski, Victoria A.; Jasinski, Jerry P.; Kurup, M.R. Prathapachandra
• Is Part Of: Polyhedron. Volume 141(2018)
• Page Start: 60
• Page End: 68
• Publication Date: 2018-02-15
• Subjects: Halogen bridged dimer -- Benzhydrazone -- Copper(II) complexes -- Pseudohalide -- Square pyramidal; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2017.11.024
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: The new proligand 2-benzoylpyridine-3-methoxybenzhydrazone and its three box dimer complexes [CuLCl]2, [CuLBr]2 and [CuLN3 ]2 have been synthesised and physicochemically characterized. The complexes [CuLCl]2 and [CuLBr]2 are halogen bridged box dimers, whereas [CuLN3 ]2 is an azide bridged box dimer. All the copper(II) complexes show distorted square pyramidal geometry with similar binding modes having g|| > g ⊥ > 2.0023 showed that a single electron resides in the dx 2 − y 2 ground state. Abstract: The new proligand 2-benzoylpyridine-3-methoxybenzhydrazone (HL) and its three copper(II) complexes have been synthesized and characterized by different physicochemical techniques, including molar conductivity measurements, magnetic studies, electronic, infrared and EPR spectral studies. The crystal structures of HL and its copper complexes have been resolved using single crystal X-ray studies. The reaction of 2-benzoylpyridine-3-methoxybenzhydrazone with a variety of copper salts yielded a series of copper(II) complexes of the type [CuLX]2 where X = Cl (1 ), Br (2 ) and N3 (3 ). The crystal structures of all these compounds revealed halogen/azide bridged box dimers having the monoclinic space group symmetry P 21 / n . All the complexes have a distorted square pyramidal geometry.