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Syntheses, Structures and Photophysical Properties of Metal Carbonyl Clusters with Dansyl and Acridone Luminophores
Author(s) -
Wong WaiYeung,
Choi KaHo,
Lin Zhenyang
Publication year - 2002
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200208)2002:8<2112::aid-ejic2112>3.0.co;2-k
Subject(s) - chemistry , acridone , fluorescence , fluorophore , metal , quenching (fluorescence) , luminescence , alkyne , photochemistry , naphthalene , stoichiometry , crystallography , cluster (spacecraft) , transition metal , stereochemistry , organic chemistry , physics , optoelectronics , quantum mechanics , catalysis , computer science , programming language
A series of fluorescent transition metal complexes bearing the 5‐(dimethylamino)naphthalene‐1‐sulfonyl (R 1 ) and acridone (R 2 ) frameworks have been prepared. Reactions of the fluorescent‐labeled alkyne ligands R 1 CH 2 C≡CH and R 2 CH 2 C≡CH with various metal carbonyl compounds [Co 2 (CO) 8 ], [Et 3 NH][Fe 2 (CO) 6 (μ‐CO)(μ‐S t Bu)] and [M 3 (CO) 10 (NCMe) 2 ] (M = Ru, Os) readily afforded new cluster complexes of the stoichiometry [Co 2 (CO) 6 (μ‐η 2 ‐RCH 2 CCH)] ( 1 : R = R 1 , 2 : R 2 ), [Fe 2 (CO) 6 (μ‐S t Bu)(μ‐η 2 ‐RCH 2 C=CH 2 )] ( 3 : R = R 1 , 4 : R 2 ), [Ru 3 (CO) 9 (μ‐CO)(μ 3 ‐η 2 ‐RCH 2 CCH)] ( 5 : R = R 1 , 6 : R 2 ) and [Os 3 (CO) 9 (μ‐CO)(μ 3 ‐η 2 ‐RCH 2 CCH)] ( 7 : R = R 1 , 8 : R 2 ) in moderate to good yields. All of these new complexes have been fully characterized by FTIR, 1 H NMR spectroscopy, UV/Vis spectroscopy and fast atom bombardment mass spectrometry (FABMS). The single‐crystal X‐ray structural analyses and molecular orbital calculations on 1 , 2 , 4 and 8 have been performed. It was found that all of these compounds are fluorescent in solutions at room temperature and a luminescence band characteristic of the inherent fluorophore is observed in these metal structures. However, a strong quenching of the fluorescence intensity of the chromophoric groups was observed upon coordination of metal cluster moieties. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)