Related Experiment Video
Updated: May 11, 2026

Interactive Molecular Model Assembly with 3D Printing
Published on: August 13, 2020
Model of dark conglomerate structure in the B2 phase of bent-shape molecules
Lubor Lejček1, Milada Glogarová, Vladimíra Novotná
1Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic. lejcekl@fzu.cz
Abstract:
Texture observations in B2 phase of bent-shape molecules showed a coexistence of so-called dark conglomerate (DC) structure with fan-shaped texture composed of focal conic domains (FCDs). A model of DC structure based on grains of dimensions lower than visible wavelengths is proposed and used to compare the energies of DC and FCD structures. The comparison of energies of both structures enables the estimation of approximate model parameters. Reorientation of smectic layers in grains under an electric field and transformation into the system of FCD structure are discussed.
Related Concept Videos
Newman Projections
The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
Structure of Benzene: Molecular Orbital Model
Molecular Models
Molecular Shapes
Two regions of electron density in a diatomic...
VSEPR Theory and the Basic Shapes
Hybridization of Atomic Orbitals I

