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Bis(1,4,7‐trithiacyclononane)gold Dication: A Paramagnetic, Mononuclear Au II Complex
Author(s) -
Blake Alexander J.,
Greig John A.,
Holder Alan J.,
Hyde Timothy I.,
Taylor Anne,
Schröder Martin
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199001971
Subject(s) - dication , chemistry , delocalized electron , aqueous solution , hyperfine structure , paramagnetism , crystallography , ion , physics , atomic physics , organic chemistry , quantum mechanics
The d 9 Au II complex 1 is unambiguously mono‐nuclear . It was obtained by reaction of KAuCl 4 with two equivalents of 1,4,7‐trithiacyclononane ([9]aneS 3 ) in refluxing aqueous HBF 4 /MeOH (structure of [Au([9]aneS 3 ) 2 ] 2⊕ , 1 , at the right). The ESR spectrum shows a strong signal at g = 2.010 ( T = 77K) displaying clear hyperfine coupling. A delocalization of the positive charge of 1 over the ligands is presumably of only minor importance.