5,6‐Di­phenyl­[1,3]­di­thiolo­[4,5‐b]di­thiine‐2‐thione

In the title compound, C₁₇H₁₀S₅, the dithiine ring adopts a boat conformation while the di­thiole ring has an envelope conformation. The phenyl groups are planar and make dihedral angles of 40.7 (2) and 59.8 (2)° with the best plane of the thiine ring. The shortest intermolecular S?S contact is 3.305 (2) Å.     

5,6‐Di­phenyl­thieno­[2,3‐d][1,3]dithiole‐2‐thione

The title compound, C₁₇H₁₀S₄, has two independent mol­ecules in the asymmetric unit. In both mol­ecules, the fused heterocycle is almost planar and the phenyl groups make dihedral angles of 42.88 (9) and 52.79 (8)° with the fused heterocycle in one mol­ecule, and angles of 40.62 (9) and 52.28 (8)° in the other. The crystal packing is governed by short intermolecular S?S interactions, the shortest contact being 3.333 (1) Å.     

Bis­[2‐(di­phenyl­phosphinoyl)­benzene] di­sulfide

The title compound, [2‐Ph₂P(O)C₆H₄S]₂ or C₃₆H₂₈O₂P₂S₂, obtained by electrochemical oxidation of 2‐(di­phenyl­phosphino)­benzene­thiol, has twofold crystallographic symmetry. Principal dimensions include S—S 2.0212 (15) Å, S—C 1.786 (3) Å and C—S—S—C 81.34 (14)°.     

5‐(2‐Pyridyl)‐1,3‐di­thia­ne‐2‐thione

The title compound, C₉H₉NS₃, crystallizes with two mol­ecules in the asymmetric unit. In both mol­ecules, the di­thia­ne‐2‐thione rings adopt a symmetric half‐boat conformation with the C atom opposite the C—S_thione bond out of the plane. The pyridine ring is in an equatorial position and is twisted out of the plane of the half‐boat by 82.7 (2) and 84.5 (2)° in the two mol­ecules, so that the N atom is trans to the axial C—H bond in both cases.     

(–)‐(S)‐2‐(Fluoro­di­phenyl­methyl)­pyrrolidinium chloride

The title compound, C₁₇H₁₉FN⁺·Cl^?, has an ionic structure, and cations and anions are linked into infinite chains by Cl?H—N—H?Cl hydrogen bonds. The absolute configuration (S) was confirmed.     

Calcium(II) meso‐2,3‐di­phenyl­succinate heptahydrate

The title compound, [Ca(C₁₆H₁₂O₄)(H₂O)₆]·H₂O, adopts a conformation about the central C—C bond that places the two carboxylate groups in an anti orientation. The crystal consists of layers of two‐dimensional arrays of 2,3‐di­phenyl­succinate dianions which are linked by bridging Ca²⁺ cations. The unit cell contains two Ca²⁺ cations in an unusual four‐membered Ca—O—Ca—O ring in which the bridging O atoms belong to water mol­ecules rather than carboxyl­ates, i.e. poly­[[[di‐μ‐aqua‐bis­[penta­aqua­calcium(II)]]‐μ‐(meso‐2,3‐di­phenyl­succinato‐O:O′)] succinate dihydrate].     

6‐(1‐Hydro­xy‐2,2‐di­phenyl­ethyl)‐4,4‐di­phenyl‐2‐cyclo­hexen‐1‐one

The crystal structure of the title compound, C₃₂H₂₈O₂, (I), confirms the erythro stereochemistry of the aldol adduct. In the crystal, (I) forms centrosymmetric O—H?O=C hydrogen‐bonded dimers which in turn are connected by C—H?O and C—H?π interactions.     

1,3‐Dibenzoylimidazolidine‐2‐thione and 1,3‐dibenzo­yl‐3,4,5,6‐tetra­hydro­pyrimidine‐2(1H)‐thione

The title compounds, 1,3‐dibenzo­ylimidazolidine‐2‐thione, C₁₇H₁₄N₂O₂S, (I), and 1,3‐dibenzo­yl‐3,4,5,6‐tetra­hydro­pyrimidine‐2(1H)‐thione, C₁₈H₁₆N₂O₂S, (II), were obtained from the reactions of imidazolidine‐2‐thione and 1,4,5,6‐tetra­hydro­pyrimidine‐2‐thiol, respectively, with benzoyl chloride. Compounds (I) and (II) contain, respectively, imidazolidinethione [C=S = 1.6509 (14) Å] and ­pyrimidinethione [C=S = 1.6918 (19) Å] moieties bonded to two benzoyl rings. The mol­ecules of (I) exhibit C₂ symmetry, the C=S bond lying along the twofold rotation axis, while the mol­ecules of (II) have mirror symmetry (C_s). The imida­zolidine ring in (I) is essentially planar, while the pyrimidine ring in (II) adopts a boat conformation. Mol­ecules of (I) are linked by weak inter­molecular C—H⋯O inter­actions, while mol­ecules of (II) are held together by van der Waals inter­actions.     

N‐Methyl‐N‐(1‐phenyl­sulfonyl­indol‐2‐ylmethyl)­aniline

In the title compound, 2‐[(methylphenylamino)methyl]‐1‐(phenylsulfonyl)indole, C₂₂H₂₀N₂O₂S, the indole system is not strictly planar and the dihedral angle between the fused rings is 2.7 (1)°. The angles around the S atom of the sulfonyl substituent deviate significantly from the ideal value for tetrahedral geometry. The pyramidalization at the indole N atom is very small. Of the two C—H?O interactions, one influences the orientation of indole with respect to the sulfonyl group and the other determines the orientation of the phenyl bound to sulfonyl. The phenyl ring of the sulfonyl substituent makes a dihedral angle of 89.6 (1)° with the best plane of the indole. The molecular packing is stabilized by C—H?π and C—H?O hydrogen bonds.     

3‐(4‐Chloro­benzoyl)‐7‐(N,N‐di­methyl­amino)‐1‐phenyl­indolizine and 3‐(2,4‐di­chloro­benzoyl)‐7‐(N,N‐di­methyl­amino)‐1‐phenyl­indolizine

In both of the title compounds, C₂₃H₁₉ClN₂O, (I), and C₂₃H₁₈Cl₂N₂O, (II), the molecular packing is influenced by weak intermolecular C—H⋯O and C—H⋯π interactions, but despite the chemical similarity of the compounds, the packing in (II) is entirely different from that observed in (I).     

(±)‐1‐Methyl‐1,3,6‐triphenyl‐7‐(2‐phenyl­propen­yl)‐1,2‐dihydro­naphthalene

The crystal structure of the title compound, C₃₈H₃₂, presents a novel framework that combines the functionalities of a 1,6‐diarene‐substituted 1,2‐dihydro­naphthalene (DHN) with a 1,4‐distyrylbenzene (DSB) to form a crossed bis‐diarene. The lamellar crystal structure is held together by arene–arene inter­actions. While the orientations of the phenyl rings of the DSB units alternate within both the R and the S substructures, the homochiral substructures feature opposing polarity along the long axes of the DHN‐based diarenes.     

Synthesis of 5,6‐Diarylpyridin‐2(1H)‐ones from Isoflavones

A simple method for the cyclocondensation of substituted isoflavones with cyanoacetamide in the presence of sodium hydroxide to give an array of 3‐cyano‐5,6‐diarylpyridin‐2(1H)‐ones in good yields is reported.     

2,3‐Bis(2‐methyl­phenyl­imino)‐1,4‐di­thia­cyclo­hexane

An N,N′‐disubstituted di­thio­ox­amide derivative reacts with 1,2‐di­bromo­ethane to produce the title compound, C₁₈H₁₈N₂S₂, a heterocycle with a double Schiff base. In the crystal structure, the mol­ecule of the title compound lies on a twofold axis. Weak C—H⋯π interactions are the principal intermolecular forces, mediating the formation of layers parallel to the ab plane. Each mol­ecule participates as donor and acceptor in two such contacts.     

(2‐Hydro­xy‐5‐methyl­phenyl)­di­phenyl­phosphine oxide

Pairs of individual mol­ecules of the title compound, C₁₉H₁₇O₂P, (I), containing tetrahedrally coordinated P atoms are connected across crystallographic inversion centres via complementary O—H?O=P hydrogen bonds.     

1‐Methyl‐5,6,7,8‐tetra­hydro­quin­ox­alin‐2(1H)‐one

The title compound, C₉H₁₂N₂O, crystallizes in a triclinic unit cell, with two crystallographically independent mol­ecules in the asymmetric unit. The two independent mol­ecules adopt different modes of packing. One type of mol­ecule is arranged in infinite columns, while the other type packs as dimers, forming spacers between the parallel columns. Each type of mol­ecule is arranged in pairs related by inversion centers. The distances between potential reaction centers are 3.395 (2), 3.457 (2) and 3.522 (2) Å. As a result of the symmetry of the pairs and the close distances between the potential photoreactive centers, it is expected that the dimer will be the anti–trans isomer.     

Racemic 3,5‐di­chloro‐2‐{[(1‐phenyl­ethyl)­imino]­methyl}phenol

The title compound, (RS)‐3,5‐di­chloro‐2‐{[(1‐phenyl­ethyl)­imino]­methyl}phenol, C₁₅H₁₃Cl₂NO, was synthesized from racemic 1‐phenyl­ethyl­amine and 3,5‐di­chloro­salicyl­aldehyde. The π‐conjugate system around the imine group is essentially planar in the phenol–imine tautomer. Intramolecular O⋯N hydrogen‐bond and intermolecular C—H⋯π interactions are present in the crystal structure.     

Metal Derivatives of Heterocyclic Thioamides: Synthesis and Crystal Structures of Copper Complexes with 1‐Methyl‐1,3‐imidazoline‐2‐thione and 1,3‐Imidazoline‐2‐thione

Reactions of copper(I) halides (Cl, Br, I) with 1‐methyl‐1, 3‐imidazoline‐2‐thione (mimzSH) in 1 : 2 molar ratio yielded sulfur‐bridged dinuclear [Cu₂X₂(μ‐S‐mimzSH)₂(η¹‐S‐mimzSH)₂] (X = I, 1 , Br, 2 ; Cl, 3 ) complexes. Copper(I) iodide with 1,3‐imidazoline‐2‐thione (imzSH₂) and Ph₃P in 1 : 1 : 1 molar ratio has also formed a sulfur‐bridged dinuclear [Cu₂I₂(μ‐S‐imzSH₂)₂(PPh₃)₂] ( 4 ) complex. The central Cu(μ‐S)₂Cu cores form parallelograms with unequal Cu–S bond distances {2.324(2), 2.454(3) Å} ( 1 ); {2.3118(6), 2.5098(6) Å} ( 2 ); {2.3075(4), 2.5218(4) Å} ( 3 ); {2.3711(8), 2.4473(8) Å} ( 4 ). The Cu···Cu separations, 2.759–2.877Å in complexes 1 – 3 are much shorter than 3.3446Å in complex 4 . The weak intermolecular interactions {H₂CH···S^# ( 2 ); CH···Cl^# ( 3 ); NH···I^# ( 4 )} between dimeric units in complexes 2 – 4 lead to the formation of linear 1D polymers.     

2‐Methyl‐1‐(4‐nitro­benzyl)pyridinium bis­(maleo­nitrile­di­thiol­ato)­nickelate(III)

In the title complex, 2‐methyl‐1‐(4‐nitro­benzyl)pyridinium bis(1,2‐di­cyano­ethene‐1,2‐di­thiol­ato)­nickelate(III), (C₁₃H₁₃N₂O₂)[Ni(C₄N₂S₂)₂], the most prominent general structural feature of the complex is the completely segregated columnar stacks of anions and cations. Within the cation column, there may be stacking interactions between adjacent nitro groups and benzene rings.     

(1E,3E,5E)‐1,2,3,4,5,6‐Hexa­fluoro‐1,6‐di­phenyl­hexatriene

The title triene, C₁₈H₁₀F₆, was prepared via the Pd⁰ coupling reaction of (E)‐(1,2‐di­fluoro‐1,2‐ethenediyl)­bis­(tri­butyl­stan­nane) with (Z)‐β‐iodo‐α,β‐di­fluoro­styrene in N,N′‐dimethylformamide/tetrahydrofuran. The crystal structure shows the product to be the 1E,3E,5E isomer. Due to steric interactions between F atoms, the double bonds are not coplanar. The planes defined by the two terminal double bonds are almost perpendicular.     

(n‐Butyl­di­phenyl­phosphine)­di­chloro(η6‐p‐cymeme)­ruthenium(II)

The title ruthenium complex, [RuCl₂(C₁₀H₁₄)(C₁₆H₁₉P)], contains a monodentate (C₄H₉)PPh₂ ligand coordinated by the P atom. Coordination about the metal centre is completed by a η⁶‐p‐cymene ligand and two Cl atoms.