title: C-branched chiral (racemic) macrocyclic amino acids: structure of their Ni(II), Zn(II) and Cu(II) complexes.
abstract: A new procedure for the synthesis of macrocyclic embedded bis-α-amino acids and their use as cation-ligands is described. These compounds are able to form stable Cu(II), Zn(II) and Ni(II) complexes as long as they have a flexible tether between the two nitrogen atoms. For a given macrocycle, the X-ray diffraction studies revealed diastereomerically pure complexes having different geometries depending on the metal ion.
authors.affiliation: Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040, Madrid, Spain.
authors.forename: Daniel
authors.initials: D
authors.lastname: Pellico
authors.forename: Mar
authors.initials: M
authors.lastname: Gómez-Gallego
authors.forename: Rosa
authors.initials: R
authors.lastname: Escudero
authors.forename: Pedro
authors.initials: P
authors.lastname: Ramírez-López
authors.forename: Montserrat
authors.initials: M
authors.lastname: Oliván
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Sierra
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D047028:Macrocyclic Compounds / Q000737:chemistry*; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*; D013237:Stereoisomerism; D015032:Zinc / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D056831:Coordination Complexes; D047028:Macrocyclic Compounds; D003300:Copper; D009532:Nickel; D015032:Zinc