Related Experiment Video
Updated: Jun 3, 2026

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
Published on: November 9, 2019
Band, target, and onion patterns in Co(OH)2 Liesegang systems
Layla Badr1, Zeinab Moussa, Amani Hariri
1Department of Chemistry, American University of Beirut, P.O. Box 11-0236, Beirut 1107 2020, Lebanon.
Abstract:
The study of morphology and shape development has gained considerable interest in certain sciences, notably biology and geology. Liesegang experiments producing Co(OH)2 stratification are performed here, in one, two, and three dimensions for comparison of the pattern morphologies. We obtain well-resolved bands in one dimension, target patterns (rings) in two dimensions, and onion patterns (spherical shells) in three dimensions. The morphological characteristics of the various patterns (spacing coefficients, rate of growth of ring spacing with distance) were measured. The spacing ratio of the strata in the different spatial dimensions was found to be anticorrelated with the surface-to-volume ratio of the gel domain. Some studies featuring the importance of morphology in Liesegang systems are briefly surveyed.
Related Concept Videos
Valence Bond Theory
Valence Bond Theory
MO Theory and Covalent Bonding
Molecular Orbital Theory II
π Molecular Orbitals of the Allyl Cation and Anion
Enolate Mechanism Conventions
C-attack...

