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{Tl[Au(C6Cl5)2]}n:  A Vapochromic Complex

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posted on 2003-01-31, 00:00 authored by Eduardo J. Fernández, José M. López-de-Luzuriaga, Miguel Monge, M. Elena Olmos, Javier Pérez, Antonio Laguna, Ahmed A. Mohamed, John P. Fackler
The X-ray structure of {Tl[Au(C6Cl5)2]}n, 1, consists of 1-D linear polymer chains parallel to the crystallographic z axis. The crystal structure of 1 has channels that run parallel to these chains with interatom distances in the range 3.231−4.076 Å. There are holes in these channels with diameters as large as 10.471 Å, which can accommodate a variety of solvents. Complex 1 displays reversible vapochromic emission and absorption spectral behavior when the solid is exposed to a variety of organic vapors such as acetone, acetonitrile, triethylamine, acetylacetone, tetrahydrothiophene, 2-fluoropyridine, tetrahydrofuran, and pyridine. Complex 1 is luminescent at room temperature and at 77 K in the solid state. UV excitation at 495 nm leads to an emission at 531 nm.