[Cu(phdpa)Cl]+ (phdpa=bis(2-pyridylmethyl)aniline): a moiety of unusual stability in some 1:1 Cu(II) complexes of phdpa. Synthesis and X-ray crystal structures of [Cu(phdpa)Cl2] and [Cu2(phdpa)2Cl3]PF6·0.5MeOH

Intramolecular ether oxygen coordination in the zinc complexes with dipicolylamine (DPA)-derived ligands

“…As described above, linking an ether pendant chain to the DPA moiety would enhance the ether oxygen binding to the metal center [10]. Strong binding of the DPA unit to the copper(II) [5][6][7][8][9]11] assists the coordination of the anomeric oxygen atom of the sugar unit to the metal center, generating an asymmetric oxygen [12,13]. Similar idea for the improvement of ether oxygen coordination was employed by Sigel using a phosphate group in place of DPA [14,15].…”

“…All solved structures exhibit meridional coordination geometries for the DPA moiety [5][6][7][8][9]11,35,36]. …”

“…Dipicolylamine (2,2 0 -dipyridylmethylamine, DPA) is one of the most studied tridentate metal-binding units in the coordination chemistry [5][6][7][8][9]. As described above, linking an ether pendant chain to the DPA moiety would enhance the ether oxygen binding to the metal center [10].…”

Acetato(methanol)[N-phenyl-N,N-bis(2-pyridylmethyl)amine]copper(II) hexafluorophosphate

“…Crystal structures of two copper(II) complexes incorporating the tridentate ligand N-phenyl-N,N-bis(2-pyridylmethyl)amine (phbpa) have been published previously (Ugozzoli et al, 2002). One is a mononuclear neutral dichloro derivative, (phbpa)CuCl 2 , and the other involves a dinuclear chlorobridged cation, [(phbpa) 2 Cu 2 Cl 3 ] + .…”

Syntheses, structures, and spectroscopic properties of binuclear copper(II) complexes containing N,N-bis(2-pyridylmethyl)amine ligands

“…A variety of transition metal complexes with bpa-R have been reported [7][8][9][10][11][12][13][14][15][16][17]. Coordination chemistry of copper is of continuing importance in relation to the structures and reactivity of the active sites in copper metalloproteins [18], but studies on copper(II) complexes with bpa-R are limited [19]. The Cu(II) ion, owing to the well-known ''plasticity'' of the coordination sphere, forms complexes of coordination number foursix, with a variety of irregular geometries [20,21].…”