title: Synthesis and structural characterization of luminescent trinuclear gold(I) complexes with dithiocarbamates.
abstract: We have synthesized a series of trinuclear gold(I) complexes, namely, [Au3(mu-dpmp)(S2CNR2)nCl3-n] (n = 0-3; R = Me, CH2Ph), [Au3(mu-dpmp)(mu-S2CNR2)Cl](CF3SO3) (R = Me, CH2Ph), and [Au3(mu-dpmp)(mu-S2CNMe2)(C6F5)]X (X = Cl, CF3SO3), containing the triphosphine dpmp [bis(diphenylphosphinomethyl)phenylphosphine] and varying amounts of dithiocarbamate. NMR experiments show fluxional behavior in solution for most of these derivatives because several arrangements of the ligands are possible. The crystal structure of [(mu-dpmp)(AuCl)3] has been determined by X-ray diffraction studies; the molecule displays mirror symmetry and involves an angular arrangement of the gold atoms [Au-Au-Au 119.603(14) degrees, Au-Au 3.3709(4) A]. We have studied the optical properties of these derivatives in the solid state, finding a red shift as a function of the dithiocarbamate number and, for some derivatives, wavelength-dependent emission spectra at low temperature.
authors.affiliation: Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Bardají
authors.forename: A
authors.initials: A
authors.lastname: Laguna
authors.forename: P G
authors.initials: PG
authors.lastname: Jones
authors.forename: A K
authors.initials: AK
authors.lastname: Fischer