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Molecules 2003, 8(3), 310-317; doi:10.3390/80300310

Sulfur Bridged Multidentate Ligands Based on (Bi)pyridyl-(Bi)-1,3,4-Thiadiazolyl Conjugates

1,* , 1 and 2
1 Department of Physical and Chemical Methodologies for Engineering, Engineering Faculty, University of Catania, V.le Andrea Doria 6, I-95125 Catania, Italy 2 Department of Economy and Territory, Economy Faculty, University of Catania, Cso Italia 55, I-95129 Catania, Italy
* Author to whom correspondence should be addressed.
Received: 22 January 2003 / Revised: 14 March 2003 / Accepted: 17 March 2003 / Published: 31 March 2003
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The synthesis of a series of mixed (bi)pyridyl/(bi)1,3,4-thiadiazolyl ligands, derived from the condensation of 2-mercapto-5-methylthio-1,3,4-thiadiazole or 5-mercapto-5'-methylthio-2,2'-bi-1,3,4-thiadiazole with 2,6-bis(chloromethyl)pyridine or 6,6’-bis(chloromethyl)-2,2’-bipyridine (compounds L1–L4), and of 2,5-dimercapto-1,3,4-thiadiazole or 5,5'-dimercapto-2,2'-di-1,3,4-thiadiazole with picolyl chloride hydrochloride or 6-chloromethyl-6'-methyl-2,2'-bipyridine (compounds L5–L8) in the presence of triethylamine is described. All new compounds have been characterized by FAB (+) spectrometry and NMR spectroscopy. 13C-NMR spectra are crucial to firmly establish the thiol structure of the title ligands.
Keywords: (Bi)pyridyl derivatives; (bi)-1; 3; 4-thiadiazolyl derivatives; (bi)pyridyl/(bi)-1; 3; 4-thiadiazolyl mixed ligands; azathio ligands (Bi)pyridyl derivatives; (bi)-1; 3; 4-thiadiazolyl derivatives; (bi)pyridyl/(bi)-1; 3; 4-thiadiazolyl mixed ligands; azathio ligands
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Mamo, A.; Pappalardo, A.; Clasadonte, M.T. Sulfur Bridged Multidentate Ligands Based on (Bi)pyridyl-(Bi)-1,3,4-Thiadiazolyl Conjugates. Molecules 2003, 8, 310-317.

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