N,N′-Dibenzyl-N′′-(2,4-difluoro­benzo­yl)-N,N′-dimethyl­phospho­ric triamide

In the title mol­ecule, C₂₃H₂₄F₂N₃O₂P, the P atom is in a distorted tetra­hedral P(=O)(N)(N)₂ environment, with the bond angles around the P atom in the range 106.78 (11)–114.10 (13)°. The phosphoryl and carbonyl groups, which are separated by an N atom, adopt an anti orientation relative to each other. In the C(=O)NHP(=O) fragment, the P—N bond is longer [1.683 (2) Å] and the O—P—N angle is smaller [106.78 (11)°] than the other P—N bonds [1.613 (2) and 1.632 (2) Å] and O—P—N bond angles [114.10 (13) and 110.83 (12)°], respectively. The N atoms have sp² character. In the crystal, pairs of P=O...H—N hydrogen bonds form inversion dimers with R₂²(8) ring motifs.

2,3-Dihydro-1H-cyclo­penta­[b]naph­tha­len-1-ol

In the title compound, C₁₃H₁₂O, the cyclo­pentene ring fused with the naphthalene group adopts an envelope conformation. The cyclo­pentene torsion angle, with the fusion bond at the centre, has a magnitude of 1.16 (16)°. In the crystal, neigh­bouring mol­ecules are connected through O—H...O hydrogen bonds into an R₄⁴(8) ring motif. The crystal packing also features weak π–π stacking inter­actions [centroid–centroid distance = 3.8981 (8) Å] and C—H...π inter­actions.

Bis(2,2′-bipyridyl-κ²N,N′)dichlorido­rhodium(III) perchlorate

The asymmetric unit of the title compound, [RhCl₂(C₁₀H₈N₂)₂]ClO₄, consists of one unit of the cationic complex [RhCl₂(bipy)₂]⁺ and one uncoordinated perchlorate anion. The Rh^III atom is coordinated by four N atoms from two bipyridyl ligands and two Cl atoms, forming a distorted octa­hedral environment. The Cl ligands are cis. Two intramolecular C—H...Cl hydrogen bonds occur in the cationic complex . In the crystal, mol­ecules are linked together by a hydrogen-bond network involving the H atoms of bipyridyl rings and perchlorate anions. An O atom of the perchlorate anion is disordered over two sites, with an occupancy-factor ratio of 0.78 (3):0.22 (3).

5-Amino-4-bromo-2,3-dihydro-1H-inden-1-one

In the title compound, C₉H₈BrNO, the non-H-atom framework is essentially planar, with a maximum deviation of 0.087 (3) Å. In the crystal, mol­ecules are inter­connected into a three-dimensional network by C—H...O and N—H...O hydrogen bonds. In addition, C—H...π inter­actions and a π–π stacking inter­action, with a centroid–centroid distance of 3.5535 (19) Å, are also observed.

(1E,2E)-2-Methyl-3-phenyl­acryl­aldehyde thio­semicarbazone

In the crystal structure of the title compound, C₁₁H₁₃N₃S, mol­ecules form centrosymmetric synthons with an R₂²(8) graph-set motif, linked by pairs of N—H...S hydrogen bonds. The synthons are connected through further N—H...S hydrogen bonds, extending the packing to form a two-dimensional network lying parallel to (001). In addition, C—H...π inter­actions are observed.

1-(4-Carb­oxy­butan-2-yl­idene)-4-phenyl­thio­semicarbazide

The mol­ecule of the title compound, C₁₂H₁₅N₃O₂S, which belongs to the family of thio­semicarbazones, containing an acid group, adopts a semi-closed conformation with an intramolecular N—H...N hydrogen bond. In the crystal, molecules are linked by strong N—H...O and O—H...S hydrogen bonds between the acid group and thiosemicarbazone unit, with one additional intermolecular hydrogen C—H...O interaction. These three interactions form R₂²(8) and a R₂¹(7) rings and the molecules related by the c-glide plane are linked into a zigzag chain along [001].

5-(Adamantan-1-yl)-3-[(4-benzyl­piperazin-1-yl)meth­yl]-1,3,4-oxadiazole-2(3H)-thione

The mol­ecule of the title compound, C₂₄H₃₂N₄OS, is a functionalized 1,3,4-oxadiazole-2-thione with substituted piperazine and adamantanyl substituents attached at the 3- and 5-positions, respectively, of the oxadiazole spacer with an approximately C-shaped conformation. In the crystal, mol­ecules form dimers via C—H...S inter­action. The piperazine ring has a chair conformation; the substituents S, methyl­ene C and adamantane C of the essentially planar oxadiazole ring are approximately in the same plane, with distances of −0.046 (2), −0.085 (5) and 0.003 (4) Å, respectively. The dihedral angle between the planes of the phenyl and oxadiazole rings is 31.3 (3)°.

N′-(Adamantan-2-yl­idene)benzo­hydrazide

The title mol­ecule, C₁₇H₂₀N₂O, is a functionalized hydrazine with benzoyl and adamantyl substituents attached to the two hydrazine N atoms. In the crystal, mol­ecules are linked via N—H...N hydrogen bonds, forming chains propagating along the a-axis direction. There are also C—H...O, C—H...N and C—H...π inter­actions present within the chains.

(E)-1-[1-(4-Chloro­phen­yl)ethyl­idene]thio­semicarbazide

In the crystal structure of the title compound, C₉H₁₀ClN₃S, the mol­ecules form chains parallel to [001] through N—H...S hydrogen bonds. In addition, weak inter­molecular N—H...Cl hydrogen bonds connect the chains, forming a two-dimensional network parallel to (001).

3-(Adamantan-1-yl)-4-ethyl-1-[(4-phenyl­piperazin-1-yl)meth­yl]-1H-1,2,4-triazole-5(4H)-thione

The title compound, C₂₅H₃₅N₅S, has an approximately C-shaped conformation. The dihedral angle between the triazole and phenyl planes is 79.5 (2)°. The crystal structure consists of infinite chains parallel to the b axis, constructed by C—H...S hydrogen bonds between translation-related mol­ecules. Adjacent chains are linked via weak C—H...C inter­actions between the adamantyl and phenyl groups.

4-(Diphenyl­amino)­benzaldehyde 4-phenyl­thio­semicarbazone

The title mol­ecule, C₂₆H₂₂N₄S, is composed of three main parts, viz. a triphenyl­amine group is connected to a phenyl ring by a thio­semicarbazone moiety. The C= N double bond has an E conformation. The crystal packing is dominated by strong hydrogen bonds through the thio­semicarbazone moiety, with pairs of N—H...S hydrogen bonds linking the mol­ecules to form inversion dimers with an R₂²(8) ring motif. An intra­molecular N—H...N hydrogen bond is also present, generating an S(5) ring motif. Although the structure contains four phenyl rings, π–π stacking inter­actions are not formed between them, probably due to the conformation adopted by the triphenyl­amine group. However, a weak π–π stacking inter­action is observed between the phenyl ring and the delocalized thio­semicarbazone moiety.

2,5-Dibromo­indan-1-ol

In the title compound, C₉H₈Br₂O, the cyclo­pentene ring adopts an envelope conformation with the brominated C atom as the flap. In the crystal, mol­ecules are linked by strong O—H...O hydrogen bonds into zigzag C(4) chains along [010]. In addition, a C—H...π inter­action involving the benzene ring and the H atom attached to the hy­droxy­lated C atom is observed.