Synthesis and Crystal Structure of the Trigonal Silver(I) Dithioaurate(I), Ag₃AuS₂

The crystal structure of uytenbogaardtite, Ag3AuS2, and its relationships with gold and silver sulfides-selenides

“…This afforded an overall data collection of 47,568 reflections (1099 unique). The refined unit-cell parameters are a = 13.6952 5 and V = 2776.1(2) Å 3 , which are in good agreement with those found by Seryotkin et al (2011), a = 13.7104(4), c = 17.1170(6) Å, V = 2786.5(2) Å 3 , for synthetic Ag 3 AuS 2 . Data frames were processed using the CrysAlis software package (Oxford Diffraction, 2006) running on the Xcalibur 3 control PC.…”

“…This author also pointed out that given the fact that not many 00l reflections were observed it is not possible to ascertain with confidence if a four-fold screw axis is present, with probable space group P4 1 22 or P4 1 . Recently, Seryotkin et al (2011) solved the crystal structure of synthetic Ag 3 AuS 2 and found that the compound is actually trigonal, space group R3c. These authors compared the trigonal structure of Ag 3 AuS 2 with that of cubic petzite (Ag 3 AuTe 2 ) and fischesserite (Ag 3 AuSe 2 ) and found that it cannot be attributed to the petzite group, because it exhibits a new structure type.…”

“…55 Recently, Seryotkin et al (2011) solved the crystal structure of synthetic Ag 3 AuS 2 and 56 found that the compound is actually trigonal, space group R 3 c. These authors compared the 57 trigonal structure of Ag 3 AuS 2 with that of cubic petzite (Ag 3 AuTe 2 ) and fischesserite 58 (Ag 3 AuSe 2 ) and found that it cannot be attributed to the petzite group, because it exhibits a 59 new structure type. By means of the synthesis and structural characterization of gold-silver 60 sulfoselenides belonging to the Ag 3 Au(Se,S) 2 series (i.e., Ag 3 AuSe 1.5 S 0.5 , Ag 3 AuSeS, and The morphotropic transformation results from the shrinkage of anion packing accompanied 66 by the shortening of Ag-Ag distances with increase of S content.…”

Isomorphism and solid solutions among Ag- and Au-selenides

“…1.25; 1.5; 1.75; 2) were performed using the procedure carried out earlier on other gold and silver sulfides and selenides AgAuS, Au 3 AuSe 2 , Ag 2 S, Ag 2 Se [8,14,15]. Gold and silver (99,99%) as well as selenium (99,9%) with a total weight of 500 mg were taken as initial substances.…”

Gradual Transformation of Ag2S to Au2S Nanoparticles by Sequential Cation Exchange Reactions: Binary, Ternary, and Hybrid Compositions

“…Compared to the Ag/Au/Se system where only one single ternary material exists that is called fischisserite and shows a Ag3AuSe2 stoichiometry, the S analogue presents two possible stoichiometric compounds, namely the Ag3AuS2 (uytenbogaardtite) and the AgAuS (petrovskaite), both previously studied as bulk from compositional, structural, thermodynamic and electronic perspectives by other authors. [24][25][26][27][28][29][30] Such structural and stoichiometry diversity represents a new challenge for cation exchange procedures in colloidal systems. Our results show that cation exchange reactions can be successfully performed on Ag2S nanocrystals in order to obtain pure Ag3AuS2 and AgAuS nanocrystals decorated with metallic Au.…”