Abstract
N,N′-diisobutyloxycarbonyl-N″,N‴-(1,3-propylene)-bisthiourea (L) and its silver(I) and gold(I) complexes were designed and synthesized. Treatment of 1,3-propanediamine with the isothiocyanate iPrCH2OC(O)NCS yielded bisthiourea L with over 90% yield. Treatment of L with AgNO3 in CH3CN afforded coordination polymer {[Ag(L)(NO3)·CH3CN]}n (1) with layer structure, while with HAuCl4 in CH3CN resulted in reduction of Au3+ to Au+ to yield molecular [Au(L)Cl] (2). Ligand L and complexes 1 and 2 were fully characterized by IR, 1H NMR, UV–Vis, cyclic voltammetry and element analysis. The X-ray diffraction analysis displays that the bisthiourea L behaves as sulfur donor to coordinate to Ag and Au atom with μ3-(S, μ2-S′,S′) and μ2-S, S′ coordination mode in 1 and 2, respectively.
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