Effect of the Pyridine Substituent on the Role of the Phenol Functional Group in [Cu(pOHBz)2(dPy)2] Complexes (pOHBz: p‐Hydroxybenzoate, dPy= 4‐Phenylpyridine, 4‐Benzylpyridine, 3‐Phenylpyridine). Issue 35 (13th December 2017)

• Record Type: Journal Article
• Authors: Sanchez‐Sala, Marta; Pons, Josefina; Álvarez‐Larena, Ángel; Domingo, Concepción; Ayllón, José A.
• Is Part Of: ChemistrySelect. Volume 2:Issue 35(2017)
• Page Start: 11574
• Page End: 11580
• Publication Date: 2017-12-13
• Subjects: Coordination modes -- Hydrogen bonds -- N ligands -- O ligands -- Substituent effects; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201702833
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: The crystal structure of three new complexes of stoichiometry [Cu(pOHBz)2 (dPy)2 ] (pOHBz: p ‐hydroxybenzoate, dPy= 4‐phenylpyridine, 4‐benzylpyridine, 3‐phenylpyridine) and its comparison with the previously reported [Cu(pOHBz)2 (Py)2 ] (1) indicate that the nature and position of the pyridine substituent determines different roles for the phenol group from the pOHBz ligand and, consequently, the coordination number and geometry of Cu(II) centers. Results herein reported show the versatility of the pOHBz ligand towards the coordination of Cu(II). Different carboxylate bonding modes are also observed: monodentate, bidentate chelating or bidentate bridge. Besides, this governs the different roles of the phenol group of the pOHBz ligand: founding of supramolecular hydrogen‐bond based network or direct bonding to the copper cation, yielding 2D coordination polymers. Abstract : The versatility of p‐hydroxybenzoate ligand coordination to Cu(II) is shown in a family of compounds including different pyridine derivatives that determine both the carboxylate bonding mode and the phenol role.