Cu(II) 4-phenoxybenzoate dimers and monomer coordinated by pyridines: Synthesis and crystal structures. (1st September 2018)

• Record Type: Journal Article
• Authors: Sanchez-Sala, Marta; Pons, Josefina; Alvarez-Larena, Angel; Bayés-García, Laura; Font-Bardia, Mercè; Ayllón, José A.
• Is Part Of: Polyhedron. Volume 151(2018)
• Page Start: 545
• Page End: 553
• Publication Date: 2018-09-01
• Subjects: 4-Phenoxybenzoate -- Copper(II) paddle-wheel -- Copper(II) monomer -- Pyridine ligands -- Supramolecular networks; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2018.06.015
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: Five copper(II) 4-phenoxybenzoate complexes, including different monodentate pyridine ligands are synthesized and characterized. The determination of the crystal structure of all compounds allows determining the influence of pyridine ligand nature on both molecular structure and supramolecular interactions. Abstract: The complexes [Cu(PhOBz)2 (dPy)]2 (PhOBz = 4-phenoxybenzoate; dPy = pyridine (1 ), 3-phenylpyridine (2 ), 4-benzylpyridine (3 ) and 4-phenylpyridine (4 ) and the complex [Cu(PhOBz)2 (4-Phpy)2 (H2 O)] (5 ) were prepared and fully characterized. X-ray crystal structures of the five complexes have been determined. Complexes 1 –4 consist of binuclear units where both Cu(II) are linked by four syn – syn carboxylate bridges, showing a paddle-wheel unit. The compound 5 is mononuclear and the metal center is coordinated to two PhOBz in monodentate form, two 4-Phpy ligands and one H2 O molecule with slightly distorted square pyramidal geometry. Finally, the magnetic properties of compounds 3 and 5 have also been studied, confirming the different strength interactions between Cu(II) cations.