Synthesis and characterization of ruthenium heterocyclic-thiocarboxylate complexes |
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Authors: | Mohammad El-khateeb Taghreed M. A. Jazzazi Helmar Görls Tareq M. A. Al-Shboul Matthias Westerhausen |
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Affiliation: | 1.Chemistry Department,Jordan University of Science and Technology,Irbid,Jordan;2.Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universt?t Jena,Jena,Germany |
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Abstract: | The cyclopentadienyl ruthenium complexes CpRuL2SCO-het (Cp = η5-C5H5; L2 = 2PPh3 (1), dppe (2)) bearing heterocyclic thiocarboxylate ligands have been synthesized from the reaction of CpRuL2SH with heterocyclic acid chlorides (ClCO-2-C4H3S (a); ClCO-2-C4H3O (b); ClCO-1-C4H8N (c)). Bubbling of CO gas through a THF solution of (1) produced the mixed carbonyl–phosphine complexes CpRu(PPh3)(CO)SCO-het (3) with high yields. Complexes (1)-(3) were characterized by spectroscopic methods (i.r., 1H-n.m.r., 31P-n.m.r.) and elemental analysis. The molecular structure of CpRu(PPh3)2SCO-2-C4H3S (1a) verifies that the thiocarboxylate ligands bind via the sulfur atom (Ru–S = 2.406(2) Å). |
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