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pangshaofeng06

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xiaomuyu2010

木虫 (小有名气)

Recrystallization of the resulting residue from pentane at -35 °C afforded analytically and spectroscopically pure 1-(N2)2.

戊烷残余物在-35 °C重结晶得到化学及光谱纯的1-(N2)2
2楼2010-10-07 14:44:18
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pangshaofeng06

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至尊木虫

引用回帖:
Originally posted by xiaomuyu2010 at 2010-10-07 14:44:18:
Recrystallization of the resulting residue from pentane at -35 °C afforded analytically and spectroscopically pure 1-(N2)2.

戊烷残余物在-35 °C重结晶得到化学及光谱纯的1-(N2)2

我给你这一段文字,你从上下文,分析一下,因为你的翻译我还是不太理解。谢谢


Preparation of 1-(N2)2: Method 2. A 50 mL round-bottomed flask
was charged with 0.102 g (0.15 mmol) of 1-Br2 and approximately 30
mL of diethyl ether. The resulting blue suspension was cooled to -35
°C in the drybox freezer. Via microsyringe, 0.293 mL (0.293 mmol)
of a 1.0 M solution of NaBEt3H in toluene was added to the reaction
flask. After being stirred under a N2 atmosphere at ambient temperature
for 3 h, the green-purple solution was filtered through Celite, and the
volatiles were removed from the filtrate in vacuo. Recrystallization of
the resulting residue from pentane at -35 °C afforded analytically and
spectroscopically pure 1-(N2)2.
至尊木虫
3楼2010-10-07 14:50:10
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古可ぷ

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应该是这么做吧:过滤后的余物在零下35度下,用戊烷重结晶后供分析以及用于制备色谱纯1-(N2)2
非吾小天下,才高而已;非吾纵古今,时赋而已;非吾睨九州,宏观而已;三非焉罪?无梦至胜
4楼2010-10-07 15:30:12
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yihua8808

铁杆木虫 (知名作家)

对产生的废渣结晶性能的比较,分析,提供多年°C上分光镜纯1 -(氮气)2。
上善若水。水善利万物而不争,处众人之所恶,故几于道。
5楼2010-10-07 15:51:35
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pangshaofeng06

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引用回帖:
Originally posted by 古可ぷ at 2010-10-07 15:30:12:
应该是这么做吧:过滤后的余物在零下35度下,用戊烷重结晶后供分析以及用于制备色谱纯1-(N2)2

呵呵,谢谢,esulting residue from pentane,那么我是把滤液重结晶还是把滤渣重结晶,residue是什么呢,同时滤液里有乙醚或者醋酸,如何用来结晶,滤渣又如何重结晶呢,麻烦解答,如果合理,我愿给您二十金币,谢谢
至尊木虫
6楼2010-10-07 16:18:22
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古可ぷ

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pangshaofeng06(金币+10, 翻译EPI+1):外文求助 2010-10-07 16:55:18
引用回帖:
Originally posted by pangshaofeng06 at 2010-10-07 16:18:22:

呵呵,谢谢,esulting residue from pentane,那么我是把滤液重结晶还是把滤渣重结晶,residue是什么呢,同时滤液里有乙醚或者醋酸,如何用来结晶,滤渣又如何重结晶呢,麻烦解答,如果合理,我愿给您二十金币, ...

英语原文献不是说用真空蒸发掉挥发性液体吗,重结晶一般是用滤渣咯,滤渣重结晶是用戊烷在上述条件下溶解后再变化温度条件来释出结晶,比如降温等等
非吾小天下,才高而已;非吾纵古今,时赋而已;非吾睨九州,宏观而已;三非焉罪?无梦至胜
7楼2010-10-07 16:24:58
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