J. Appl. Cryst.の発刊に際して

https://www.pnas.org/content/pnas/90/5/1635.full.pdf

Supramolecular chemistry.

Identification of antibacterial and antifungal pharmacophore sites for potent bacteria and fungi inhibition: indolenyl sulfonamide derivatives.

Polymorphism and solvatomorphism 2010.

Electrocatalytic oxidation and detection of hydrazine at carbon nanotube-supported palladium nanoparticles in strong acidic solution conditions

In the title compound, C6H6Cl2N2, intra­molecular N–H⋯Cl and C—H⋯Cl contacts generate five-membered rings, producing S(5) ring motifs. Pairs of inter­molecular N—H⋯N hydrogen bonds link neighbouring mol­ecules into dimers with R22(8) ring motifs. In the crystal structure, these dimers are connected by N—H⋯Cl inter­actions and are packed into columns.

https://journals.iucr.org/e/issues/2009/01/00/tk2343/tk2343.pdf

3,5-Dichloro-6-methyl­pyridin-2-amine

In title compound, C7H8N2S, the five-membered rings are twisted by a dihedral angle of 5.17 (10)°. Two inter­molecular N—H⋯N and C—H⋯N hydrogen bonds to the same acceptor N atom form seven-membered rings, producing R21(7) ring motifs. These inter­actions link neighbouring mol­ecules into one-dimensional chains extended along the c axis. The crystal structure is further stabilized by weak inter­molecular C—H⋯π inter­actions.

/pdf/2-2-thien-yl-4-5-dihydro-1h-imidazole-29oawfo0nm.pdf

2-(2-Thien-yl)-4,5-dihydro-1H-imidazole.

In the title compound, C19H14Cl2O4, intra­molecular C—H⋯O and C—H⋯Cl hydrogen bonds generate S(6) and S(5) ring motifs, respectively. In the crystal structure, inter­molecular C—H⋯O inter­actions between symmetry-related mol­ecules involving two methyl­ene groups and an O atom as a bifurcated acceptor generate an R21(6) ring motif. In the mol­ecule, one of the furan rings is rotationally disordered by approximately 180° about the single C—C bond to which it is attached; the refined site-occupancy factors are 0.505 (7) and 0.495 (7). The major component of the disordered furan ring and the benzene ring form a dihedral angle of 88.8 (4)°. The dihedral angle between the major disorder component and the other furan ring is 81.9 (4)°. In addition, the crystal structure is stabilized by further inter­molecular C—H⋯O (×2) hydrogen bonds and C—H⋯π inter­actions.

https://journals.iucr.org/e/issues/2009/02/00/lh2756/lh2756.pdf

3-(2,4-Dichloro-phen-yl)-1,5-di-2-furylpentane-1,5-dione.

The mol­ecule of the title Schiff base compound, C16H12Cl4N2, lies across an inversion centre and adopts an E configuration with respect to the azomethine C=N bond. The imine groups are coplanar with the aromatic rings. Within the mol­ecule, the planar units are parallel but extend in opposite directions from the dimethyl­ene bridge. In the crystal structure, mol­ecules are linked together by inter­molecular C—H⋯Cl hydrogen bonds along the a axis.

https://journals.iucr.org/e/issues/2008/11/00/bg2206/bg2206.pdf

N,N'-Bis(3,5-dichloro-benzyl-idene)-ethane-1,2-diamine.

The title compound, C20H14N2, comprises two crystallographically independent centrosymmetric mol­ecules (A and B) with different conformations due to the disorder of molecule B. The whole of mol­ecule B is disordered over two sets of positions, corresponding to a 180° rotation of the molecule, with a site-occupancy ratio of 0.780 (6):0.220 (6). The minor component of the disordered part in B has the same configuration as mol­ecule A, but the major component is different. The dihedral angle between the planes of mol­ecule A and mol­ecule B (major component) is 63.22 (3)°. The crystal structure is stabilized by inter­molecular C—H⋯π inter­actions.

https://journals.iucr.org/e/issues/2009/02/00/pk2144/pk2144.pdf

Reza Kia

Papers

3,5-Dichloro-6-methylpyridin-2-amine

2-(2-Thien-yl)-4,5-dihydro-1H-imidazole.

3-(2,4-Dichloro-phen-yl)-1,5-di-2-furylpentane-1,5-dione.

N,N'-Bis(3,5-dichloro-benzyl-idene)-ethane-1,2-diamine.

1,2-Di-2-quinolylethene

Reza Kia

Papers

3,5-Dichloro-6-methyl­pyridin-2-amine

2-(2-Thien-yl)-4,5-dihydro-1H-imidazole.

3-(2,4-Dichloro-phen-yl)-1,5-di-2-furylpentane-1,5-dione.

N,N'-Bis(3,5-dichloro-benzyl-idene)-ethane-1,2-diamine.

1,2-Di-2-quinolylethene

3,5-Dichloro-6-methylpyridin-2-amine