Premium
Experimental and Theoretical Evidence of the Existence of Gold(I)⋅⋅⋅Mercury(II) Interactions in Solution through Fluorescence‐Quenching Measurements
Author(s) -
Lasanta Tania,
LópezdeLuzuriaga José M.,
Monge Miguel,
Olmos M. Elena,
Pascual David
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201203789
Subject(s) - chemistry , heteronuclear molecule , naphthalene , quenching (fluorescence) , organomercury , fluorescence , mercury (programming language) , synthon , luminescence , organomercury compounds , crystallography , analytical chemistry (journal) , stereochemistry , metal , organic chemistry , materials science , nuclear magnetic resonance spectroscopy , programming language , physics , optoelectronics , quantum mechanics , computer science
Heteronuclear complexes {[Hg(R) 2 ][Au(R′)(PMe 3 )] 2 } n (R=R′=C 6 Cl 2 F 3 ( 3 ); R=R′=C 6 F 5 ( 4 ); R=C 6 Cl 2 F 3 , R′=C 6 F 5 ( 5 ); R=C 6 F 5 , R′=C 6 Cl 2 F 3 ( 6 )) were prepared by the treatment of the corresponding organomercury compounds, [Hg(C 6 X 5 ) 2 ], with two equivalents of [Au(C 6 X 5 )(PMe 3 )]. Their crystal structures, as determined by using X‐ray diffraction methods, display Au⋅⋅⋅Hg interactions. Although only compound 4 and 5 show luminescence in the solid state, all of these compounds quench the fluorescence of naphthalene in solution. Solution studies of these derivatives suggest a cooperative effect of the gold(I) center in switching on the quenching capabilities of the [Hg(C 6 X 5 ) 2 ] synthon with naphthalene. Theoretical studies confirmed the quenching ability of the organomercury species in the presence of gold.