The N-methyl benzotellurodiazolylium cation self-associates in the solid state via short (2.471(3) A) 4-center TeN' intermolecular contacts; electrochemical data and the results of DFT calculations suggest that the dimers persist in solution.

In the title compound, C(11)H(10)N(2)O, the O atom and the C atom of the methyl-ene group deviate only slightly [0.029 (3) and 0.055 (3) Å, respectively] from the approximately planar ring system (r.m.s. deviation = 0.013 Å). In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into zigzag chains running along the b axis.

This communication describes the first example of the efficient use of a simple amphiphilic molecule as both a surfactant and an initiator in the miniemulsion polymerization of methyl methacrylate under AGET and ARGET ATRP conditions.

In the crystal structure of the title compound, C(8)H(10)N(2)O(3), mol-ecules are linked by N-H⋯O hydrogen bonds, forming ribbons of centrosymmetric dimers extending along the c axis.

Methyl 1-aryl-3-cinnamoyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates interact with 3-(arylamino)-1H-inden-1-ones to give the corresponding 1,1'-diaryl-3'-cinnamoyl-4'-hydroxy-1H-spiro[indeno[1,2-b]pyrrole-3,2'-pyrrole]-2,4,5'(1'H)-triones in good yields.

The title compound, C(10)H(7)Cl(2)NO, features a planar mol-ecule, excluding the methyl H atoms [maximum deviation = 0.0385 (1) Å]. The crystal packing is stabilized by π-π stacking inter-actions across inversion centres [centroid-to-centroid distance = 3.736 (3) Å].

Several devices of the future generation wireless telecommunication technologies that use bands in THz frequencies for data transmission need low-loss and low-permittivity materials to enable ideal conditions propagation electromagnetic waves. Herein, a lightweight dielectric bullet-shaped lens operating frequency range 110–170 GHz is demonstrated collimate waves, thus increasing intensity elec...

Osteoblastoma is an extremely rare entity that represents less than 1% of all bone tumors, and affects twice as many males as females with peak incidence between 15 and 20 years. Osteoblastomas commonly affect axial bones, long bones, bones of the foot and hand, and less commonly the pelvis, scapula, ribs, and clavicle. Osteoblastoma does not have a classic presentation, but can vary with the l...