(1-Acetyl­thio­urea-κS)bromido­bis(triphenyl­phosphane-κP)silver(I)

In the title complex, [AgBr(C₃H₆N₂OS)(C₁₈H₁₅P)₂], the Ag^I ion is in a distorted tetra­hedral geometry coordinated by two P atoms from two triphenyl­phosphane ligands, one S atom of an acetyl­thio­urea ligand and one bromide ligand. There are intra­molecular N—H...Br and N—H...O hydrogen bonds present. In the crystal, pairs of N—H...S hydrogen bonds involving thio­urea groups form inversion dimers. In addition, moleclues pack to give sixfold phenyl embraces with an inter­molecular P...P distance of 6.4586 (17) Å.

Bis(μ-4,6-dimethyl­pyrimidine-2-thiol­ato)-κ³N,S:S;κ³S:N,S-bis­[(triphenyl­phosphane-κP)silver(I)]

The dinuclear title complex, [Ag₂(C₆H₇N₂S)₂(C₁₈H₁₅P)₂], comprises two inversion-related [Ag(C₆H₇N₂S)(C₁₈H₁₅P)] units. The pyrimidine­thiol­ate anion acts both as a bridging and a chelating ligand. The Ag^I ions are linked via two μ₂-S donor atoms, which generate a strictly planar Ag₂S₂ core with an Ag...Ag separation of 2.9569 (4) Å. The Ag^I ion presents a distorted tetra­hedral coordination geometry. In the crystal, weak C—H...N and C—H...S hydrogen bonds link the complex mol­ecules into a two-dimensional network parallel to (010).

Glabridin

In the title compound, C₂₀H₂₀O₄ {systematic name: 4-[(3R)-8,8-dimethyl-3,4-dihydro-2H-pyrano[2,3-f]chromen-3-yl]benz­ene-1,3-diol}, the hydro­pyran ring linked to the pendant benzene ring adopts an envelope conformation, with the methyne C atom forming the flap. In the crystal, the –OH group at the 3-position of the benzene ring forms an O—H...O hydrogen bond to a chromene O-atom acceptor, whereas the –OH group at the 1-position forms an O—H...π inter­action with a neighboring benzene ring. The O—H...O hydrogen bonds form [001] chains and the O—H...π bonds cross-link the chains into (101) sheets. The absolute structure was assumed to be the same as that deduced from previous studies for the natural product.