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Twelvefold Functionalization of an Icosahedral Surface by Total Esterification of [B 12 (OH) 12 ] 2− : 12(12)‐Closomers
Author(s) -
Maderna Andreas,
Knobler Carolyn B.,
Hawthorne M. Frederick
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010504)40:9<1661::aid-anie16610>3.0.co;2-u
Subject(s) - icosahedral symmetry , surface modification , materials science , chemistry , crystallography
Esterified B 12 icosahedra with totally organoderivatized surfaces are obtained from the reaction of [ closo ‐B 12 (OH) 12 ] 2− with acetic anhydride or benzoyl chloride. The resulting “closomers”, in which each cluster vertex is substituted with an organic ester moiety, can provide camouflaged modules of variable size, shape, charge, hydrophobicity, etc. and represent the first examples of this structural motif known in chemistry. The figure displays, in a space‐filling representation, the result of an X‐ray analysis performed with the dodecabenzoate ester derivative.