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Cover Picture: Minerals as Molecules—Use of Aqueous Oxide and Hydroxide Clusters to Understand Geochemical Reactions (Chem. Eur. J. 18/2009)
Author(s) -
Casey William H.,
Rustad James R.,
Spiccia Leone
Publication year - 2009
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200990061
Subject(s) - goethite , protonation , hydroxide , chemistry , cover (algebra) , aqueous solution , oxide , iron oxide , molecule , crystallography , mineral , inorganic chemistry , organic chemistry , ion , mechanical engineering , adsorption , engineering
A model nanoparticle respresenting goethite (α‐FeOOH), an important soil mineral, is depicted in the center of the cover picture. The solvent‐accessible surface is represented by the translucent material, and the surface oxygen atoms are represented with spheres. The colors of the spheres give their average protonation states over the course of a molecular dynamics simulation, with red denoting FeOH 2 groups and blue denoting FeOH groups. Iron or aluminum Baker–Figgis–Keggin isomers are shown in the corners. For more details on the chemistry of minerals see the Concept article by W. H. Casey, J. R. Rustad and L. Spiccia on page 4496 ff .