Producción Científica Profesorado

Synthesis and characterization of Au(I) and Au(III) complexes containing N-heterocyclic carbene ligands derived from amino acids.



Alvarado Rodríguez, José Guadalupe

2014

Synthesis and characterization of Au(I) and Au(III) complexes containing N-heterocyclic carbene ligands derived from amino acids. Mario A. Reynoso-Esparza, Irma I. Rangel-Salas, A. Aarón Peregrina-Lucano, José G. Alvarado-Rodríguez, Fernando A. López-Dellamary-Toral, Ricardo Manríquez-González, María L. Espinosa-Macías, Sara A. Cortes-Llamas. Polyhedron (2014) 81, 564?571. 0277-5387. DOI 10.1016/j.poly.2014.07.014


Abstract


A series of [Au(NHC)2] (1a?4a) complexes supported by NHC ligands derived from glycine, alanine, methionine and phenylalanine (1?4 respectively) were prepared via a direct transmetalation reaction of their respective silver complexes. The Au complexes were characterized by ESI-MS and NMR spectroscopy in solution. These compounds exhibit instability when the solvent is removed; they displayed a strong tendency to form colored solutions in the order 4a > 3a > 2a > 1a, which is associated with gold nanoparticles. 1a and 2a undergo oxidative addition of elemental bromine, yielding [Au(NHC)2Br2] (1b) for 1a and a mixture of [Au(NHC)2Br2] (2b) and [Au(NHC)Br3] (2c) for 2a. 2b and 2c were characterized by single crystal X-ray diffraction.



Producto de Investigación




Artículos relacionados

Complexation of the uranyl ion (UO2)2+ with a tetraphenylimidodiphosphinate ligand: the first trinuc...

Hypervalence at tin(IV) by transannular bonding of sulfur in an eight-membered ring: The case of dib...

Synthesis, characterization and crystal structures of organolead dithiolate compounds displaying tra...

Ni(II) and Pd(II) organometallic and coordination complexes with a new tridentate N,N,O-donor ligand...

Hypervalence in germanium compounds containing the tetracylic moiety {S(C6H3S)2O}Ge via OGe transann...

Study of the D?Sb (D = O, S) Transannular Interaction in Sb-Monohalogenated Dibenzostibocines ? An E...

Structural Studies by NMR and X-Ray Crystallography of N-(p-Toluenesulfonyl)-Amino Acids

Pyrite?Arsenopyrite Galvanic Interaction and Electrochemical Reactivity

Synthesis, characterization and crystal structures of dipyridyl-N-methylimine and cloro-bis (N,N?-2,...

Study on the intramolecular transannular chalcogentin interactions in dithiastannecine compounds.