In the title mol-ecule, C(25)H(19)N(3)O(3)S(3), the tetra-hydro-pyridine ring adopts a half-chair conformation. The dihedral angle between the least-squares plane through the tetra-hydro-pyridine ring and two thio-phene and two benzene rings are 6.25 (9), 89.49 (9), 76.43 (9) and 84.93 (8)°, respectively, while the dihedral angle between the 1,3,4-oxadiazole and tetra-hydro-pyridine rings is 81...

The title compound, [Cu(6)V(2)O(2)S(6)(C(6)H(8)N(2))(6)], is constructed from six CuS(3)N and two VOS(3) distorted tetra-hedra, forming an octa-nuclear V/S/Cu cluster with C(i) symmetry. The geometry around the V atoms is slightly distorted tetra-hedral, while there are large distortions from ideal tetra-hedral geometry for the Cu atoms. Adjacent metal-metal distances range from 2.693 (1) to 2....

The title compound, (CH(6)N)(2)[WS(4)], was synthesized by the reaction of ammonium tetra-sulfidotungstate(VI) with aqueous methyl-amine. The title compound is isotypic with the corresponding Mo analogue (CH(6)N)(2)[MoS(4)], and its structure consists of a slightly distorted tetra-hedral [WS(4)](2-) dianion and two crystallographically independent methyl-ammonium (MeNH(3)) cations, all of which...

The structure of the title compound, [Li(BF(4))(CH(3)CN)](n), consists of a layered arrangement parallel to (100) in which the Li(+) cations are coordinated by three F atoms from three tetra-fluoridoborate (BF(4) (-)) anions and an N atom from an acetonitrile mol-ecule. The BF(4) (-) anion is coordinated to three different Li(+) cations though three F atoms. The structure can be described as be...

In the crystal structure of the title compound, [Mg(CHN(4))(2)(H(2)O)(4)], the Mg(II) atom is six-coordinated by two N atoms from two tetra-zolide anions and four O atoms from four coordinated water mol-ecules in a slightly distorted octa-hedral geometry. The Mg atom is located on centres of inversion whereas the tetra-zolide anion and the water mol-ecules occupy general positions. The crystal ...

In the title compound, C(33)H(34)N(6)O(6), the dihydro-benzimidazol-2-one ring system is essentially planar (r.m.s. deviation = 0.021 Å). The cyclo-hexane ring adopts a chair conformation. In the 5-(biphenyl-2-yl)-2H-tetra-zole fragment, the tetra-zole ring is twisted away from the attached benzene ring by 35.73 (11)° and the two benzene rings form a dihedral angle of 68.00 (9)°. An intra-molec...

Macrocyclic scaffolds are particularly attractive for designing selective G-quadruplex ligands essentially because, on one hand, they show a poor affinity for the "standard" B-DNA conformation and, on the other hand, they fit nicely with the external G-quartets of quadruplexes. Stimulated by the pioneering studies on the cationic porphyrin TMPyP4 and the natural product telomestatin, follow-up ...

Fragile X syndrome, the most common cause of inherited mental retardation, is instigated by dynamic expansion of a d(CGG) trinucleotide repeat in the 5'-untranslated region of the first exon of the FMR1 gene, resulting in its silencing. The expanded d(CGG)(n) tract readily folds into hairpin and tetraplex structures which may contribute to the blocking of FMR1 transcription. In this work, we re...

The asymmetric unit of the title compound {systematic name: 2-[hydr-oxy(6-meth-oxy-quinolin-1-ium-4-yl)meth-yl]-8-vinyl-quinuclidin-1-ium tetra-chlorido-zinc(II)}, (C(20)H(26)N(2)O(2))[ZnCl(4)], consists of a double proton-ated quininium cation and a tetra-chloridozinc(II) anion. The Zn(II) ion is in a slightly distorted tetra-hedral coordination environment. The crystal structure is stabilized...

In the title centrosymmetric tetra-nuclear complex, [Cu(4)I(4)(C(15)H(17)N(5))(2)], the two distinct Cu(I) atoms adopt similar tetra-hedral arrangements, each being ligated by two I atoms, and two N atoms from one 2,6-bis-(3,5-dimethyl-1H-pyrazol-1-yl)pyridine ligand. In the crystal, there are no hydrogen bonds present, and only very weak π-π inter-actions are observed [centroid-centroid distan...