Synthesis, structural characterization and properties of some novel siloxane-based bis-Schiff base copper(II), nickel(II) and manganese(II) complexes. (15th May 2018)

• Record Type: Journal Article
• Authors: Vlad, Angelica; Avadanei, Mihaela; Shova, Sergiu; Cazacu, Maria; Zaltariov, Mirela-Fernanda
• Is Part Of: Polyhedron. Volume 146(2018)
• Page Start: 129
• Page End: 135
• Publication Date: 2018-05-15
• Subjects: Siloxane Schiff base -- Metal complexes -- X-ray structure -- Photophysical properties -- Centro-symmetrical dimer; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2018.02.029
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Three new complexes of Cu(II), Ni(II) and Mn(II) ions, derived from a siloxane Schiff base, have been prepared. The structures of the complexes have been established by X-ray single-crystal analysis. The photoluminescence properties have been studied in solution and in the solid state. Abstract: In this paper we describe the synthesis and characterization of three metal complexes, namelyCuL(Id3c), NiL(Id4c) andMnL(Id6c), obtained from a Schiff base ligand containing a flexible tetramethyldisiloxane group. The molecular structures of the metal complexes are determined by X-ray single-crystal diffraction analysis, FT-IR and UV–vis spectroscopy and elemental analysis. The inability of the tetramethyldisiloxane units to be involved in H-bond formation hinders the structure packing. Centro-symmetrical dimers ofNiL(Id4c) andMnL(Id6c) are formed through π–π stacking interactions between the aromatic rings or by weak C–H⋯O intermolecular contacts inCuL(Id3c) . The optical properties of the ligand and metal complexes are reported and discussed in relation to their structures.