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[交流] 有關(guān)二硫化錫合成問題請(qǐng)教

參考文獻(xiàn)Energy Procedia 15 (2012) 340 – 346，采用化學(xué)浴法在導(dǎo)電玻璃上合成二硫化錫膜，具體過程如下：
10 ml of glacial acetic acid was poured into a 100 ml glass beaker and 1 g of stannous chloride (SnCl2 2H2O) added to the acid. The SnCl2 was dissolved by placing the beaker onto a hot plate and heating the solution to 60ºC. After 5 minutes of heating, a few drops of concentrated HCl were added drop by drop to the solution in order to obtain a clear solution. 24 ml of 6 M triethanolamine (TEA), 8 ml of 0.5 M thioacetamide and a pre-determined quantity of aqueous NH3 were added to the Sn-precursor solution followed by sufficient quantity of double distilled water to make up 100 ml of the reaction bath. Cleaned glass substrates were immersed vertically into the reaction mixture. The temperature of the bath was maintained at a constant value of 60oC and the solution stirred continuously using a magnetic stirrer. The colour of the reaction bath was initially a golden yellow; it turned to light brown and then to dark brown where the deposition started to occur on the substrates. The deposition time was carried out for 2 hours and the volume of ammonia in the reaction bath was varied from 12 ml to 20 ml, keeping the other parameters constant. The deposited layers were cleaned using distilled water and dried in a hot air oven.
過程中合成的產(chǎn)物個(gè)人覺得應(yīng)為一硫化錫，不該是二硫化錫，因?yàn)椴捎肧nCl2 2H2O為原料，錫為二價(jià)，而且文獻(xiàn)中錫硫摩爾比接近1:1，但文獻(xiàn)得到的是二硫化錫，想請(qǐng)教一下二硫化錫生成反應(yīng)方程式？

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