The crystal structure of the title compound, [Ru(C(10)H(15))(C(7)H(9)NO(2)S)]C(24)H(20)B, has been determined as part of our investigation into the structural and biological properties of organometallic Ru(II)-arene-Cp* complex salts of the type [R-PhRuCp*](+)·X(-) (where Cp* is penta-methyl-cyclo-penta-diene). Tethering the RuCp* group to the benzene ring of p-toluene-sulfonamide results in on...

The title compound, C(13)H(9)NO(5), crystallizes in space group P-1, with Z' = 3. The molecules are linked by O-H...O hydrogen bonds [H...O = 1.79-1.81 A, O...O = 2.625 (3)-2.648 (3) A and O-H...O = 172-176 degrees ] into two types of R(2)(2)(8) dimer, only one of which is centrosymmetric. An extensive series of soft hydrogen bonds, of C-H...O and C-H...pi(arene) types, links the dimers into a ...

The title compound, C10H11NOS2, crystallizes with Z' = 2 in space group C2/c. The molecules are linked by two N-H...S hydrogen bonds [H...S = 2.60 and 2.62 A, N...S = 3.350 (2) and 3.490 (2) A, and N-H...S = 143 and 172 degrees] into two distinct types of R(2)2(8) dimer, viz. one generated by inversion and the other by a twofold rotation axis. A single C-H...pi(arene) hydrogen bond links the tw...

In the crystal structure of the title compound, C(12)H(12)N(2), the mol-ecule is twisted around the central C-C bond, with a dihedral angle of 8.32 (5)° between the mean planes of the pyridyl rings. The crystal structure is stabilized by arene stacking inter-actions, with a distance of 3.81 (1) Å between the ring centroids.

The syntheses of tribenzotriquinacenes (TBTQ) bearing three phenylurea groupings at either the arene periphery or at the benzhydrylic bridgeheads of the rigid, convex-concave, C(3) (v)-symmetrical molecular framework are reported. (1)H NMR data point to supramolecular aggregation of these TBTQ derivatives in low-polarity solvents.

An increasing emphasis on waste minimization has prompted research aimed at replacing common synthetic techniques with greener alternatives. In biaryl synthesis, direct arylation1,2 is an emerging alternative to Suzuki and Stille couplings;3 however, a more efficient strategy would involve the direct catalytic crosscoupling of two arenes without recourse to stoichiometric activating groups (eq ...

In the presence of K(2)CO(3) in refluxing THF, dichloro-substituted tetraoxacalix[2]arene[2]triazine, a readily available macrocyclic compound from cyanuric acid chloride and benzyl 1,3-dihydroxybenzoate, underwent highly efficient nucleophilic displacement reactions with bis-nucleophilic reagents of different geometry, length and chirality in a 2+2 fashion to produce large and size-tunable cav...

A novel luminescent inclusion complex, {[(C4AS)(2)Ag(3)(mu-2,2'-bpy)(2)(2,2'-bpy)(2)] [Ag(5)(mu-2,2'-bpy)(4)(2,2'-bpy)(4)].20H(2)O}(n) () (2,2'-bpy = 2,2'-bipyridine, C4AS = p-sulfonatocalix[4]arene), with an unusual framework is reported: the parallel 1D infinite silver(i) chains separated by the water belts reside in the big cavities of the p-sulfonatocalix[4]arene-trisilver blocks.

This work reports a new method to covalently attach calix[4]arene derivatives onto MCM-41, using a diisocyanate as a linker. The modified mesoporous silicates were characterized by fourier transform infrared spectroscopy (FTIR), thermal analysis (TGA) and elemental analysis. The FTIR spectra and TGA analysis verified that the calix[4]arene derivates are covalently attached to the mesoporous sil...

Dinuclear trihydroxido-bridged osmium-arene complexes are inert and biologically inactive, but we show here that linking dihydroxido-bridged Os(II) -arene fragments by a bridging di-imine to form a metallacycle framework results in strong antiproliferative activity towards cancer cells and distinctive knotting of DNA. The shortened spacer length reduces biological activity and stability in solu...