Bis{N-benzyl-N-[2-(thio­phen-2-yl)eth­yl]di­thio­carbamato-κ²S,S′}lead(II)

The mol­ecule of the title compound, [Pb(C₁₄H₁₄NS₃)₂], is located on a twofold rotation axis. The di­thio­carbamate anion S,S′-chelates to the Pb^II atom, which shows a Ψ-trigonal–bipyramidal coordination. The thio­phene ring is disordered over two positions, the major component having 71.3 (7)% occupancy. The mol­ecular conformation is stabilized by intra­molecular C—H...S inter­actions.

Methyl 9-(4-meth­oxy­phen­yl)-19-methyl-3,12-di­aza­penta­cyclo­[10.7.0.0^2,10.0^3,8.0^13,18]nona­deca-1(19),13(18),14,16-tetra­ene-10-carboxyl­ate

The title ester, C₂₇H₃₀N₂O₃, crystallizes with two independent mol­ecules in the asymmetric unit whose geometrical features are similar. In each mol­ecule, the pyrrolidine ring adopts an envelope conformation, with the fused C atom shared with the piperidine ring as the flap, and the piperidine ring adopts a chair conformation. In the crystal, C—H...π inter­actions link the inversion-related molecules and form a dimeric arrangement in the unit cell.

4-Sulfamoylanilinium perchlorate

In the crystal of the title salt, C₆H₉N₂O₂S⁺·ClO₄⁻, the components are linked by N—H...O hydrogen bonds, forming a three-dimensional network. The cations are connected along a and b axes, leading to linear and zigzag C(3) and C(8) chain motifs, respectively. A cation–anion inter­action along the c axis leads to a C₂²(12) chain motif. R₃³(18) and R₃³(20) ring motifs are observed as cation–anion-type inter­actions. These hydrogen-bonding ring and chain motifs are localized at z = 0 or 1, leading to alternate hydro­philic and hydro­phobic regions along the c axis as a result of the stacking of anions and the aromatic cationic parts.

2-(2,4-Di­fluoro­phen­yl)-4,5-dimethyl-1-(4-methyl­phen­yl)-1H-imidazole monohydrate

The asymmetric unit of the title compound, C₁₈H₁₆F₂N₂·H₂O, contains two independent mol­ecules (A and B), and two independent water mol­ecules of crystallization. In mol­ecule A, the imidazole ring makes dihedral angles of 47.46 (7) and 60.98 (6)° with the 2,4-di­fluoro­phenyl and methyl­phenyl rings, respectively. The corresponding angles in mol­ecule B are 45.85 (7) and 62.78 (7)°, respectively. The dihedral angle between the two benzene rings is 64.98 (7)° in mol­ecule A and 65.53 (7)° in mol­ecule B. In the crystal, the two independent mol­ecules are linked by O—H...N and O—H...O hydrogen bonds, forming chains propagating along [100]. These chains are linked via C—H...F hydrogen bonds, forming slab-like two-dimensional networks lying parallel to (001).