The mixed-valent copper thiol­ate complex hexa­kis­{μ₃-2-[(1,3-dimethyl­imidazol­idene)amino]­benzene­thiol­ato}dicopper(II)tetra­copper(I) bis­(hexa­fluoridophosphate) acetonitrile disolvate dichloro­methane disolvate

The mol­ecular structure of the title compound, [Cu₄^ICu₂^II(C₁₁H₁₄N₃S)₆](PF₆)₂·2CH₃CN·2CH₂Cl₂, shows a mixed-valent copper(I/II) thiol­ate complex with a distorted tetra­hedral coordination of the Cu^I and Cu^II cations by one guanidine N atom and three S atoms each. Characteristic features of the Cu₆S₆ skeleton are a total of six chemically identical μ₃-thiol­ate bridges and almost planar Cu₂S₂ units with a maximum deviation of 0.110 (1) Å from the best plane. Each Cu₂S₂ unit then shares common Cu–S edges with a neighbouring unit; the enclosed dihedral angle is 60.14 (2)°. The geometric centre of the Cu₆S₆ cation lies on a crystallographic inversion centre. Cu—S bond lengths range from 2.294 (1) to 2.457 (1) Å, Cu—N bond lengths from 2.005 (3) to 2.018 (3) Å and the non-bonding Cu...Cu distances from 2.5743 (7) to 2.5892 (6) Å. C—H...F hydrogen-bond inter­actions occur between the PF₆⁻ anion and the complex mol­ecule and between the PF₆⁻ anion and the acetonitrile solvent mol­ecule.

Triethyl­ammonium 4-(3,5-dinitro­benzamido)-N-(3,5-dinitro­benzo­yl)benzene­sulfonamidate

The mol­ecular structure of the title salt, C₆H₁₆N⁺·C₂₀H₁₁N₆O₁₂S⁻, shows a planar geometry of the benzamido–phen­yl–sulfonyl moiety, with a dihedral angle of 1.59 (9)° between the aromatic ring planes. The central ring and the aromatic ring of the other dinitro­benzamide group are nearly perpendicular, making a dihedral angle of 89.55 (9)°. All nitro groups lie almost in plane with the associated aromatic rings, the O—N—C—C torsion angles ranging from 9.2 (2) to 24.3 (2)°. In the crystal, strong anion–anion N—H...O and anion–cation hydrogen bonds form inversion dimers stacked along the a axis. Less prominent anion–anion C—H...O inter­actions lead to the formation of a three-dimensional network including anion–anion dimers as well as anion–anion chains along [100?].

Dichloridobis(1,3-diisopropyl-4,5-di­methyl-1H-imidazol-3-ium-2-thiol­ate-κS)copper(II)

The mol­ecular structure of the title compound, [CuCl₂(C₁₁H₂₀N₂S)₂], shows the Cu^II atom with a distorted tetra­hedral geometry from two Cl atoms [Cu—Cl = 2.2182 (6) Å] and two thione S atoms [Cu—S = 2.3199 (6) Å]. The angles at the copper cation, which lies on a twofold rotation axis, are Cl—Cu—Cl = 142.84 (4)°, Cl—Cu—S = 94.80 (2) and 99.97 (2)°, and S—Cu—S = 132.46 (4)°. The planes of the two imidazolium rings make a dihedral angle of 76.92 (8)°.

N,N′-Bis(4-bromo­phen­yl)pyridine-2,6-dicarboxamide

The mol­ecule of the title compound, C₁₉H₁₃Br₂N₃O₂, lies about a twofold rotation axis. The benzene ring makes dihedral angles of 8.9 (2) and 16.4 (2)° with the central pyridine ring and the second benzene ring, respectively. An intra­molecular N—H...N contact occurs. In the crystal, mol­ecules are connected by pairs of N—H...O hydrogen bonds into chains along the c axis.

N-(4-Hy­droxy­phen­yl)-4-nitro­benzamide

The mol­ecular structure of the title compound, C₁₃H₁₀N₂O₄, shows an almost planar conformation as the benzene rings make a dihedral angle of 2.31 (7)°. The nitro group lies in plane with the benzamide ring, with a C—C—N—O torsion angle of 0.6 (2)°. In the crystal, N—H...O and O—H...O hydrogen bonds link mol­ecules into sheets stacked along [10-1].

2-Benzyl­sulfanyl-N-(1,3-dimethyl­imidazolidin-2-yl­idene)aniline

The mol­ecular structure of the title compound, C₁₈H₂₁N₃S, shows a twisted conformation with a dihedral angle of 67.45 (4)° between the aromatic ring planes and an N-C-C-S torsion angle of -5.01 (13)°. The imidazolidine ring and the aniline moiety make a dihedral angle of 56.03 (4)° and the asscociated C-N-C angle is 125.71 (10)°. The guanidine-like C=N double bond is clearly localized, with a bond length of 1.2879 (14) Å. The C-S-C angle is 102.12 (5)° and the S-C(aromatic) and S-C bond lengths are 1.7643 (11) and 1.8159 (12) Å.

9-(2-Hy­droxy-6-oxocyclo­hex-1-en-1-yl)-2,3,4,9-tetra­hydro-1H-xanthen-1-one

In the xanthene ring system in the title compound, C₁₉H₁₈O₄, the 4H-pyran ring has a maximum deviation of 0.110 (2) Å from planarity and the cyclo­hexene ring exhibits a puckered conformation [puckering parameters Q_T = 0.452 (3) Å, θ = 57.0 (4) and φ = 131.7 (4)°]. The cyclo­hexene ring attached to the xanthene system adopts an envelope conformation, with the middle of the three methylene C atoms as the flap atom. In the crystal, O—H...O and C—H...O hydrogen bonds form infinite chains of R₁²(6) ring motifs along [100] with the xanthene groups arranged in an alternating zigzag manner.

N,N′-Bis(4-hy­droxy­phen­yl)pyridine-2,6-dicarboxamide di­methyl­formamide monosolvate

The mol­ecular structure of the pyridine derivative, C₁₉H₁₅N₃O₄·C₃H₇NO, shows almost planar geometry with dihedral angles of 6.9 (1) and 13.4 (1)° between the pyridine ring and the two benzene rings. This conformation is stabilized by two intra­molecular N—H...N(pyridine) bonds. In the crystal, strong O—H...O(carboxamide) and N—H...O(hy­droxy­phen­yl) hydrogen bonds link the mol­ecules, forming a three-dimensional structure. The di­methyl­formamide solvent mol­ecules are not involved in the hydrogen bonding. The structure shows pseudosymmetry, but refinement in the space group Pbcn leads to significantly worse results and a disordered di­methyl­formamide mol­ecule.

(2R,3R,4S,5R)-2-(4-Amino-5-iodo-7H-pyrrolo­[2,3-d]pyrimidin-7-yl)-5-methyl­tetra­hydro­furan-3,4-diol

The mol­ecular structure of the title compound, C₁₁H₁₃IN₄O₃, shows a ribo­furanos­yl–pyrrolo O—C—N—C torsion angle of 59.1 (3)°, with the central C—N bond length being 1.446 (3) Å. The C—I bond length is 2.072 (2) Å. The amino group is coplanar with the attached aromatic ring [C—N—C—N torsion angle = −178.8 (2)°] and forms an intra­molecular N—H...I hydrogen bond. In the crystal, O—H...N and N—H...O hydrogen bonds link the mol­ecules into puckered layers parallel to (001). These layers are bound to each other by secondary I...O inter­actions [3.2250 (17) Å], forming a three-dimensional framework.