Bis(2,S-dimethyl­dithio­carbazate-κ²N³,S)(nitrato-κO)copper(II) nitrate

The title complex, [Cu(NO₃)(C₃H₈N₂S₂)₂]NO₃, represents a low-symmetry polymorph (P-1, Z = 4) of a previously reported form [P-1, Z = 2; Ali et al. (2011). Polyhedron, 30, 542–548]. The Cu^II atom in each independent cation is found within a distorted square-pyramidal N₂S₂O coordination geometry defined by two N,S-bidentate ligands and an O atom derived from a monodentate nitrate. The primary difference between the cations is found in the relative orientations of the coordinated nitrate groups, which are directed to opposite sides of the mol­ecule. Supra­molecular layers along [110] and sustained by N—H...O inter­actions feature in the crystal packing. These are connected along the c axis by C—H...O inter­actions.

Benzyl 2-methyl-3-[(E)-(thio­phen-2-yl)methyl­idene]dithio­carbazate

In the title compound, C₁₄H₁₄N₂S₃, the thione S atom and methyl group are syn, as are the two thio­ether S atoms. The mol­ecule is twisted, the dihedral angles between the central (C₂N₂S₂) residue and the pendent 2-thienyl and phenyl rings being 21.57 (6) and 77.54 (3)°, respectively. In the crystal, mol­ecules assemble into a three-dimensional architecture via C—H...π inter­actions, involving both the five- and six-membered rings as acceptors, as well as S...S inter­actions [3.3406 (5) Å] between centrosymmetrically related 2-thienyl rings.

Benzyl 3-[(E)-(furan-2-yl)methyl­idene]-2-methyldithio­carbazate

In the title compound, C₁₄H₁₄N₂OS₂, the furan ring exhibits rotational disorder over two orientations, with an occupancy ratio of 0.508 (7):0.492 (7). The furan and phenyl rings form dihedral angles of 8.2 (6) (major occupancy component), 14.8 (6) (minor occupancy component) and 73.65 (9)°, respectively, with the central residue (C₄N₂S₂), indicating a twisted conformation for the mol­ecule. The methyl group and the thione S atom are syn and the conformation about the imine bond is E. In the crystal, C—H...π inter­actions involving the phenyl ring are observed.