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Synthesis and Structural Characterization of the Gold Complexes of 1,2,4-Triazole Derived N-Heterocyclic Carbene Ligands

Proceedings of the National Academy of Sciences India Section A - Physical Sciences, ISSN: 2250-1762, Vol: 86, Issue: 4, Page: 605-609
2016
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Abstract: Two gold(I) complexes of an amido-N functionalized 1,2,4-triazole derived N-heterocyclic carbene ligands have been synthesized and structurally characterized. In particular, the {[1-(R)-4-N-(furan-2-ylmethyl)acetamido-1,2,4-triazol-5-ylidene]Au}Cl [R = Et (1c) and i-Pr (2c)] complexes were conveniently synthesized from their respective silver(I) analogs (1–2)b by the direct reaction with (SMe)AuCl in CHCN at room temperature. The molecular structure determination of the gold(I) (1–2)c complexes using single crystal X-ray diffraction study revealed a syn-disposition of two N-heterocyclic carbene (NHC) ligands bound across the Au(I) center in a linear fashion with it’s two amido-N functionalized sidearms interacting with a non-coordination Cl anion through two intramolecular H-bonds.

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