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Self‐Assembly of Hexanuclear Clusters of 4f and 5f Elements with Cation Specificity
Author(s) -
Diwu Juan,
Good Justin J.,
DiStefano Victoria H.,
AlbrechtSchmitt Thomas E.
Publication year - 2011
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201100066
Subject(s) - cerium , chemistry , thorium , plutonium , ionic radius , lanthanide , ion , metal , ionic bonding , inorganic chemistry , crystallography , radiochemistry , metallurgy , uranium , organic chemistry , materials science
Six hexanuclear clusters of 4f and 5f elements were synthesized by room‐temperature slow concentration experiments. Cerium(IV), thorium(IV), and plutonium(IV) each form two different hexanuclear clusters, among which the cerium and plutonium clusters are isotypic, whereas the thorium clusters show more diversity. The change in ionic radii of approximately 0.08 Å between these different metal ions tunes the cavity size so that NH 4 + (1.48 Å) has the right dimensions to assemble the cerium and plutonium clusters, whereas Cs + (1.69 Å) is necessary to assemble the thorium clusters. If these cations are not used in the reactions, only amorphous material is obtained.