Studies in Mössbauer spectroscopy. Part 9. Gold-197 spectra of gold(I) compounds

Gold dithiocarboxylates

“…The dimensions of the dithioacetato ligands are essentially the same as those observed for dimeric Pt2(dta)431 and Pd2(dta)416 (containing bridging ligands only) but differ from those found in monomeric Pd(dta)216 and dtaK32 in having a longer C-C bond distance (1. 51 (3) Á against 1. 47 (2) Á in Pd(dta)2 and 1.40 (5) Ain dtaK), a larger SCS angle of 132(1)°(112.1 (10) and 123.5 (6)°), and a larger angle at sulfur (113.8 (9)°against 87.15 (7)°i n the monomeric palladium complex).…”

Reactions of chloro(triphenylphosphine)gold(I) and [µ-l,2-bis(diphenylphosphine)ethane]-bis[bromogold(I)] with oxopurine bases. Molecular and crystal structure and bonding of (theophyllinato)(triphenylphosphine)gold(I)

“…The [Au(PPh,)Cl] complex was prepared from Na[AuC1,]*2H20 and PPh, as previously described. 29 Microanalyses of C, H, and N were performed with a Perkin-Elmer 240C analyser. Gold was determined thermogravimetrically with a Mettler TG-50 thermobalance (Table 1).…”

Gold and mössbauer spectroscopy

“…Since these variations are only 10 to 15 per cent of the actual values, the technique is both satisfactory and useful. The method is equivalent to the calculation of partial isomer shift and partial quadrupole splitting values for each ligand, which is described elsewhere (3,6,11). The advantage of the latter method is that IS and QS values can be obtained for ligands for which data for the bis-ligand comple• AuL2 are not available.…”