In the title compound, C22H16Br2O2, which has approximate non-crystallographic inversion symmetry, the dihedral angles between the central ring and the pendant rings are 89.1 (4) and 82.4 (3)°; the dihedral angle between the pendant rings is 12.1 (4)°. In the crystal, the packing is influenced by van der Waals forces and no aromatic π-π stacking is observed.

In the title compound, C(22)H(10)N(4)O(2), the dihedral angles between the mean planes of the central benzene ring and the pendant rings are 79.20 (6) and 80.29 (6)°. The dihedral angle between the pendant rings is 10.27 (7)°.

La découverte d'un kyste de l'ovaire pendant la grossesse est une situation de plus en plus fréquente en raison de la pratique systématique de l'échographie dans le suivi prénatal. L'incidence de survenue de kyste ovarien pendant la grossesse est estimée à environ 1% . Le diagnostic du kyste de l'ovaire durant la grossesse pose des problème de prise ne charge thérapeutique selon le terme pendan...

Two bolaamphiphilic compounds with identical acetylcholine (ACh) head groups, but with different lengths of an alkyl chain pendant adjacent to the head group, as well as differences between their hydrophobic skeleton, were investigated for their ability to self-assemble into vesicles that release their encapsulated content upon hydrolysis of their head groups by acetylcholinesterase (AChE). One...

let g be a simple connected graph and {v1, v2, …, vk} be the set of pendent (vertices ofdegree one) vertices of g. the reduced distance matrix of g is a square matrix whose (i,j)–entry is the topological distance between vi and vj of g. in this paper, we obtain the spectrumof the reduced distance matrix of thorn graph of g, a graph which obtained by attaching somenew vertices to pendent vertice...

We consider external reflection rainbow caustics due to the reflection of light from a pendant droplet where the light rays are at an arbitrary angle with respect to the horizontal. We compare this theory to observation of glare spots from pendant drops on grass; we also consider the potential application of this theory to the determination of liquid surface tension.

Novel [60]fullerene-based poly(phenylacetylene)s prepared by the copolymerization of achiral phenylacetylenes bearing a C(60) or crown ether pendant form a one-handed helix upon complexation with L- and D-alanine, yielding a helical array of the pendant fullerenes with a predominant screw-sense along the polymer backbone.

In the title compound, C(22)H(14)N(2)O(2), the five rings of the mol-ecule are not coplanar. There is a significant twist between the four fused rings, which have a slightly arched conformation, and the pendant aromatic ring, as seen in the dihedral angle of 13.16 (8)° between the anthraquinonic ring system and the pendant aromatic ring plane.

An edge labeling of a connected graph G = (V, E) is said to be local antimagic if it Bijection f : E ? {1, … ,|E|} such that for any pair adjacent vertices x and y, f+(x) ? f+(y), where the induced vertex label ?f(e), with e ranging over all edges incident x. The chromatic number G, denoted by ?la(G), minimum distinct labels labelings G. In this paper, we first show d-leg spider has d + 1 ? ?la...