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Summary: CYCLIC TRINUCLEAR GOLD(I) COMPOUNDS:
SYNTHESIS, STRUCTURES AND
SUPRAMOLECULAR ACID-BASE p-STACKS
ALFREDO BURINI
Dipartimento di Scienze Chimiche,
University of Camerino, Camerino, Italy
AHMED A. MOHAMED
JOHN P. FACKLER, Jr.
Department of Chemistry and Laboratory for Molecular
Structure and Bonding, Texas A&M University,
College Station, Texas, USA
Trinuclear 9-membered rings can be formed by gold(I) ions with exobiden-
tate C,N or N,N monoanionic ligands. They are generally slightly irregular
and puckered unless the metallocycle is imposed by intramolecular crystallo-
graphic symmetry. Gold-gold intramolecular interactions are always present
and the complexes exhibit a roughly D3h symmetry. Crystal structures of
these trinuclear complexes show individual complexes, dimers supramolecu-
lar columnar packing or more complex supramolecular aggregates. Dimers
and supramolecular structures are held together by aurophilic intermolecular
gold-gold interactions. Bulky substituents on the ligands can prevent intermo-
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