In the title compound, C21H23NO2, the hexyl group adopts an extended conformation, the six C atoms are nearly coplanar [maximum deviation = 0.082 (3) Å] and their mean plane is approximately perpendicular to the carbazole ring system, with a dihedral angle of 78.91 (15)°. In the crystal, mol-ecules are linked by O-H⋯O hydrogen bonds, forming inversion dimers; π-π stacking between carbazole ring...

Given a set of points S in any dimension, we describe a deterministic algorithm for finding a T ⊂ S, |T | = O(1/ε) such that the centroid of T approximates the centroid of S within a factor 1+ ε for any fixed ε > 0. We achieve this in linear time by an efficient derandomization of the algorithm in [M. Inaba, N. Katoh, H. Imai, Applications of weighted Voronoi diagrams and randomization to varia...

In the title compound, [Co(2)(C(12)H(8)O(12))(C(12)H(8)N(2))(2)](n), each 3,6-dicarb-oxy-cyclo-hexane-1,2,4,5-tetra-carboxyl-ate (H(2)chhc(4-)) anion has crystallographically imposed C(2) symmetry and bridges four six-coordinate Co atoms, generating polymeric chains running along [010]. These chains are further extended into a three-dimensional network via O-H⋯O hydrogen-bonding inter-actions a...

The title compound, C(25)H(29)NO(4)S(2) 0.5CH(2)Cl(2), was obtained as a racemate. The pyridine and phenyl rings are arranged face-to-face, giving a weak intra-molecular π-π inter-action [centroid-centroid separation = 3.759 (3) Å]. These inter-actions are extended inter-molecularly, forming chains of stacked rings along [001] with separations of 3.859 (3) and 3.916 (3) Å. The solvent used for ...

Biological sequences may contain patterns that are signal important biomolecular functions; a classical example is regulation of gene expression by transcription factors that bind to specific patterns in genomic promoter regions. In motif discovery we are given a set of sequences that share a common motif and aim to identify not only the motif composition, but also the binding sites in each seq...

The title compound, C(12)H(12)N(2)S(2)O(2), consists of a benzothia-zole group and a oxazolidin-1-one linked via a flexible ethane-1,2-diyl spacer. The benzothiazole group and the oxazolidine ring are each almost planar [with maximum deviations of 0.007 (2) and 0.044 (3) Å, respectively] and make a dihedral angle of 9.35 (10)°. In the crystal structure, adjacent mol-ecules were connected throug...

The title mol-ecule, C(10)H(9)NO(5)S, is composed of two essentially planar units with a dihedral angle of 89.16 (6)° between them. In the crystal structure, there are weak inter-molecular C-H⋯O inter-actions resulting in dimeric pairs of mol-ecules about inversion centres and chains of mol-ecules extended along the a and c axes, thus stabilizing the structure. In addition, benzothia-zole rings...

The title compound, {[Mn(HCOO)(2)(C(12)H(8)N(2))(H(2)O)]·H(2)O}(n), consists of polymeric chains of the complex [Mn(HCOO)(2)(phen)(H(2)O)](∞) (phen is 1,10-phenanthroline) with solvent water mol-ecules. The chains contain six-coordinate Mn(II) ions bridged by formate anions. They are further extended into a three-dimensional network via O-H⋯O hydrogen-bonding inter-actions and inter-chain π-π s...

In the mol-ecular structure of the centrosymmetric mononuclear complex [Ni(2-bpt)(2)(H(2)O)(2)](ClO(4))(2) [2-bpt = 4-amino-3,5-di-2-pyridyl-1,2,4-triazole, (C(12)H(10)N(6))], the central Ni(II) atom is six-coordinated by a pair of chelating 2-bpt ligands and two water mol-ecules. Inter-molecular O-H⋯N inter-actions link the monomeric units into a two-dimensional hydrogen-bonded (4,4) network, ...