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Updated: May 7, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
On two different objectives of the concepts of ionic radii
Jian-Biao Liu1, W H Eugen Schwarz, Jun Li
1Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Tsinghua University, Beijing, 100084 (P. R. China), Fax: (+86) 10-62797472.
Abstract:
Experimentally and theoretically derived interatomic distances (D) and ionic radii (R) of more than a hundred monomeric (AX), dimeric (A2X2, ABXY), and crystalline ([AX]) alkali halide species (A=Li, Na, K, Rb, Cs, Fr; X=H, F, Cl, Br, I, At) have been analyzed. Chemists use the word "atomic radius" for two antithetic concepts. Let D(CiEE'jj') be the "billion" of distances i between two adjacent atoms in the millions of known compounds C from a hundred different elements E in bonding states j. The common chemical aim is partitioning D approximately into increments R(Ej) +R(E'j'). This can be achieved with a few (say
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