Notizen: Die Kristalldaten der Goldhalogenide AuBr₃ und AuCl / The Lattice Parameters of the Gold Halogenides AuBr₃ and AuCl

Polycations Stabilised by Borosulfates: [Au3Cl4][B(S2O7)2] and the One‐Dimensional Metal [Au2Cl4][B(S2O7)2](SO3)

“…The structure can be best described as a mixed-valent Au I /Au III , with Au III being in square planar and Au I in linear coordination of chloride anions. This assumption is in good agreement with the AuÀ Cl bond lengths of AuCl [26] (on average 2.30 Å) and AuCl 3 [27] (on average 2.35 Å for the nonterminal positions of the Au 2 Cl 6 dimers) and further corroborated by the Mulliken charges from the density-functional theory (DFT) based calculations (Au III : + 0.7 vs. Au I : + 0.4; Table S9).…”

EXAFS/XANES, XRD, and UV−Vis Characterization of Intrazeolitic Gold(I) Prepared by Monolayer Dispersion of AuCl3 inside Na−Y Zeolite

“…In our spectra an average broad peak was obtained which displayed with a monotonous shift to the lower energy side (red shift) by an increase in the temperature, i.e., from 224 nm for Au 2 Cl 6 /Na−Y to 229 nm for Au x + /Na−Y-353. Such a peak shift is related to a decrease in the Cl atoms electron deficiency induced by an increase in population of the bridged chloride (Cl b ) atoms with the formation of a polymeric (Au−Cl) n zig-zag structure. ,, It was pointed out that the L → M charge-transfer transitions from the Cl b ligands have lower energy than those from the terminal ligands (Cl t ) . The broadening of the 229 nm peak for the heat-treated samples compared with that for Au 2 Cl 6 /Na−Y could be possibly attributed to the stronger polarization induced by Au−Cl−Al linkages due to the strong interaction of the AuCl n species with Na−Y zeolite walls .…”

Cluster self-assembly of di[gold(I)]halonium cations

“…And in fact, these analogies were readily detected even when screening the most common binary compounds (14,41). Thus the gold(I) halides AuCl (15) Ϫ (Scheme 2). It should also be noted that gold(I) is one of the strongest acceptor cations in the family of metals (19).…”