The tetra(tert-butyl)-tetraazido-borazocine, 1, has the expected tub shape as determined for (SCNB=NtBu)4. However, it crystallizes in the triclinic system and shows no symmetry element in contrast to the isothiocyanato derivate which has C2 symmetry. There are two kinds of BN bonds which alter from long to short (average 1.491 and 1.388 Å). The BN bond lengths to the azido groups are, on avera...

Crystals of C(10)H(8)N(3)O(2)Br undergo two reversible phase transitions between 295 and 100 K. The first, of an order-disorder nature, is a second-order transition and takes place continuously over a wide temperature range. This transition is connected with the doubling of the length of the c axis of the unit cell and with the change of the space group from P2(1)/m with Z' = 1/2 (room-temperat...

The crystal structure of katayamalite, ideally KLi3Ca7Ti2(SiO3)12(OH)2 (potassium trilithium hepta-calcium dititanium dodeca-silicate di-hydroxide), was previously reported in triclinic symmetry (C-1), with isotropic displacement parameters for all atoms and without the H-atom position [Kato & Murakami (1985 ▶). Mineral. J. 12, 206-217]. The present study redetermines the katayamalite structure...

4-(4-Chlorophenyl)-2-(5-(4-fluorophenyl)-3-(1-(4-fluorophenyl)-5-methyl-1H-1,2,3-triazol-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)thiazole (4) and 4-(4-fluorophenyl)-2-(5-(4-fluorophenyl)-3-(1-(4-fluorophenyl)-5-methyl-1H-1,2,3-triazol-4-yl)-4,5-dihydro-1H-pyrazol-1-yl)thiazole (5) have been synthesized in high yields. Crystallization of 4 5 from dimethylformamide solvent produced samples suitable for...

The liquid crystals (LC), due to their naturally high bulk ordering, strong birefringence and easy electrooptical driving, serve as matrix in the nanocomposites doped with non-mesogenic or mesogenic nanoparticles. The nanocomposite’s structural units exhibit very complex molecular form indicating the strength and the intermolecular interaction between the matrix and dopant’s molecules. Hydrogen...

Abstract In linear elasticity, universal displacements for a given symmetry class are those that can be maintained by only applying boundary tractions (no body forces) and arbitrary elastic constants in the class. previous work, we showed larger group, space of displacements. Here, generalize these ideas to case anelasticity. anelasticity, total strain is additively decomposed into anelastic st...

The mol-ecule of the title compound, C(30)H(46), has a crystallographically imposed inversion center and the cyclo-hexyl groups are oriented with their methine H atoms pointing towards one another (H⋯H = 2.04 Å).