5813-91-2Relevant academic research and scientific papers
From sulfur-amine solutions to metal sulfide nanocrystals: Peering into the oleylamine-sulfur black box
Thomson, Jordan W.,Nagashima, Kaz,MacDonald, Peter M.,Ozin, Geoffrey A.
experimental part, p. 5036 - 5041 (2011/06/23)
In this Article, we present our findings on the formation of metal sulfide nanocrystals from sulfur-alkylamine solutions. By pulsed field gradient diffusion NMR along with the standard toolbox of 1D and 2D NMR, we determined that sulfur-amine solutions used as a sulfur precursor exist as alkylammonium polysulfides at low temperatures. Upon heating to temperatures used in nanocrystal synthesis, the polysulfide ions react with excess amine to generate H2S, which combines with the metal precursor to form metal sulfide. Four different reaction pathways were found, each of which produced H 2S and the byproducts identified in this Article. Thioamides were identified as an intermediate and were shown to exhibit much more rapid kinetics than sulfur-alkylamine solutions at low temperatures in the synthesis of metal sulfide nanocrystals.
Synthesis of primary thioamides from nitriles and hydrogen sulfide catalyzed by anion-exchange resin
Liboska, Radek,Zyka, Daniel,Bobek, Miroslav
, p. 1649 - 1651 (2007/10/03)
A new method has been developed for converting nitriles into primary thioamides. Treatment of various nitriles (Table 1, entries 1-12) with gaseous hydrogen sulfide in a mixture of methanol-water or ethanol-water and in the presence of anion-exchange resin (Dowex 1X8, SH- form) at room temperature and ambient pressure gave the corresponding thioamides in 25-96% yield.
