cis-(Nitrato-κ²O,O′)(2,5,5,7,9,12,12,14-octa­methyl-1,4,8,11-tetra­aza­cyclo­tetra­decane-κ⁴N,N′,N′′,N′′′)cadmium nitrate hemihydrate

The Cd^II atom in the title complex, [Cd(NO₃)(C₁₈H₄₀N₄)]NO₃·0.5H₂O, is coordinated within a cis-N₄O₂ donor set provided by the tetra­dentate macrocyclic ligand and two O atoms of a nitrate anion; the coordination geometry is distorted octa­hedral. The lattice water mol­ecule is located on a twofold rotation axis. N—H...O hydrogen bonds and weak C—H...O inter­actions link the complex cations into a supra­molecular layer in the bc plane. Layers are connected by O—H...O hydrogen bonds between the lattice water mol­ecule and the non-coordinating nitrate anion, as well as by weak C—H...O contacts.

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.

5,7,7,12,14,14-Hexamethyl-4,11-diaza-1,8-diazo­niacyclo­tetra­decane bis­(perchlorate) monohydrate

In the title hydrated salt, C₁₆H₃₈N₄²⁺·2ClO₄⁻·H₂O, the dication is protonated at the diagonally opposite N atoms proximate to the –C(CH₃)₂– groups. Within the cavity, there are two ammonium–amine N—H...N hydrogen bonds. Supra­molecular layers are formed in the crystal packing whereby the water mol­ecule links two perchlorate anions, and the resultant aggregates are connected to the dications via N—H...O hydrogen bonds. Layers, with an undulating topology, stack along the a axis being connected 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.

Methyl 3-(2-hy­droxy­benzyl­idene)-2-methyl­dithio­carbazate

In the title compound, C₁₀H₁₂N₂OS₂, the thione and S-methyl groups are syn. An intra­molecular bifurcated O—H...(S,N) hydrogen bond occurs.

3-Methyl-5-methyl­sulfanyl-1,3,4-thia­diazole-2(3H)-thione

The title compound, C₄H₆N₂S₃, has two very similar mol­ecules per asymmetric unit. The nine non-H atoms in each mol­ecule are coplanar, both having comparable r.m.s. deviations of 0.002 Å. The main inter­est in the rather simple structure resides in a survey of very weak (in some cases, borderline) non-bonding inter­actions of various kinds, viz. S...S, C—H...π, π–π [centroid–centroid distance = 3.8958 (13) Å] and C—S...π [3.7271 (11) Å], which act as the major driving force for the arrangement of mol­ecules in the structure. The role of long, though highly directional, S...S contacts (d > 3.60 Å), and their relevance to the stability of the structure is discussed.