Crystal and molecular structure of bis(N,N-di-n-butyldithiocarbamato)gold(III) dibromoargentate(I)

Abstract

The crystal and molecular structure of bis(N,N-din -butyldithiocarbamato)gold(III) dibromoargentate(I), Au(S2CN(C4H 9)2)2 AgBr2 , has been determined by three-dimensional X-ray methods. The compound crystallizes in the monoclinic space group C2/c with unit cell dimensions: a = 17-39(1) b = 18-65(1); c = 9-199(6) A; /3 = 93-9(1)°; Z = 4. Intensities were collected on an automatic diffractometer. The structural parameters were refined by least-squares methods to a conventional R factor o f0-048 for 854 non-zero observed reflexions. The structure consists o f Au(SaCN(C4H»)2)a+ and AgBr2~ ions. The gold is in planar coordination with four sulphur atoms, the two crystallographically non-equivalent Au-S bond lengths being 2-357(8) and 2-324(8) A. The silver is linearly coordinated, the Ag-Br bond lengths being 2-450(5) A. The ionic packing in the structure differs

Synthesis, Crystal Structure, and Selected Properties of [Au(S2CNH2)2]SCN: A Precursor for Gold Macro‐Needles Consisting of Gold Nanoparticles Glued by Graphitic Carbon Nitride

“…Comparison of the geometric parameters of the two independent cations reveals that the dithiocarbamate moieties of “Au2” differ significantly from those of “Au1” with respect to the N−C−S angles (Table S3, Supporting Information). We note that the Au−S bond lengths are very similar to those in corresponding cations [Au(S 2 CNR 2 ) 2 ] + , in which Au−S bond lengths are in the range 2.290–2.357 Å, and the geometry of the dithiocarbamate groups (Table S3) is comparable with analogous cations containing the dithiocarbamate group (ibid). Au III is situated in the center of the square planar [AuS 4 ] moiety with D 2 h symmetry, and the diagonal angles are S−Au− S =180°.…”

“…[Au(S 2 CNH 2 ) 2 ]SCN is relatedt oan umber of well-characterized bis(dithiocarbamato)-gold(III) complexes [28][29][30][31][32][33][34][35][36][37][38][39][40][41] with the general composition [Au(ÀS 2 CNR 2 ) 2 ]X (X = halide or complexa nions). The bromide-containing compound [Au(ÀS 2 CNH 2 ) 2 ]Br was prepared earlier, [42] but apart from spectroscopic data, no structural information or detailed properties were mentioned.…”

“…During a long‐time experiment to recrystallize this compound from an acid aqueous solution, partial disproportionation occurred, and several crystals of the new compound [Au(S 2 CNH 2 ) 2 ]SCN were obtained. [Au(S 2 CNH 2 ) 2 ]SCN is related to a number of well‐characterized bis(dithiocarbamato)‐gold(III) complexes with the general composition [Au(−S 2 CNR 2 ) 2 ]X (X=halide or complex anions). The bromide‐containing compound [Au(−S 2 CNH 2 ) 2 ]Br was prepared earlier, but apart from spectroscopic data, no structural information or detailed properties were mentioned.…”

Crystal and molecular structure of bis(N,N-di-n-butyldithiocarbamato)copper(III) triiodide

“…The compound consists of the ionic units Cu(dtc)z + and I3-. The structure is comparable with complexes containing Au(III)(dtc)2 + (Cras et al, 1971). In both symmetry-independent cations the copper atom is situated at a centre of symmetry, and is in planar coordination with four sulphur atoms.…”

“…Ricci et aL emphasize the slight asymmetry observed in several complexes; their list may be extended to include Au(dtc)zArBr2 (Beurskens et al, 1968a), Au(dtc)(S4C4N2) (Noordik, 1971), and the present compound, al with differences in S--C bond length of about three standard deviations.…”