Hirshfeld surface analysis of the intermolecular interaction networks in cellulose Iα and Iβ.

Due to the high crystallinity and natural abundance, the crystal structures of native cellulose allomorphs have been theoretically studied until today, but some details remain to be deciphered. In this work, research was extended on the visualization and quantification of intermolecular interactions related to hydrogen bonds and van der Waals interactions in cellulose crystals Iα and Iβ based on previous studies. For each allomorph, the crystal structure has been described by two models of hydrogen bonding networks designated here as (A) and (B).

The interpenetrated three-dimensional framework of a new mixed lithium/ammonium perchlorate grown in a gel medium.

Mixed lithium/ammonium perchlorate, Li(0.41)(NH4)(0.59)ClO4, has been prepared by gel diffusion using agar agar gel as the medium of growth at ambient temperature.

The solid solution (Fe0.81Al0.19)(H2PO4)3 with a strong hydrogen bond.

Single crystals of the solid solution iron aluminium tris(dihydrogenphosphate), (Fe(0.81)Al(0.19))(H(2)PO(4))(3), have been prepared under hydrothermal conditions.

Potassium cerium(III) bis(sulfate) monohydrate, KCe(SO4)2.H2O.

The crystal structure of potassium cerium(III) bis(sulfate) monohydrate, KCe(SO4)2.H2O, is built up from irregular independent SO4 tetrahedra, CeO9 polyhedra in the form of distorted tricapped trigonal prisms and K+ ions. Hydrogen bonding between the free water molecule and sulfate groups supplement the ionic bonds characteristic of the rest of the structure.