Isolation and structure of higher diamondoids, nanometer-sized diamond molecules.
We exploited the exceptional thermal stability and diverse molecular shapes of higher diamondoids (C22 and higher polymantanes) to isolate them from petroleum. Molecules containing 4 to 11 diamond-crystal cages were isolated and crystallized, and we obtained single-crystal x-ray structures for representatives from three families. Rigidity, strength, remarkable assortments of three- dimensional shapes, including resolvable chiral forms, and multiple, readily derivatizable attachment sites make them valuable nanometer-size molecular building blocks.
Dahl
J E
JE
MolecularDiamond Technologies, ChevronTexaco Technology Ventures, Post Office Box 1627, Richmond, CA 94802, USA.
Liu
S G
SG
Carlson
R M K
RM