solvent
solvent
6 years ago in #steemstem by mcw (63)
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solvent
solvent
solvent
那些1ml 5ml的有机配体。是不是更贵哈哈
哈哈，有手性的那些500毫克已經好貴了
好像有很多化學人呢 XDD
本科学的那些，到了phd毕业早忘光了。
😂
头一次听说这种试剂，学习了，感谢分享！
:DDDD 這麽貴的東西能省下就好了 XDD
那个科学摄影比赛食物结束了吗？我终于想到拍什么了
還有21.5 小時才結束啊！！香港時間 23/1/18 2359 結束
加油加油 ;)
好的好的，你怎么还不睡，我这是睡醒了呢，早点休息吧。
要喝了這個比茅台還貴的液體！！！（說笑）😂😂😂😂
怎麽 @aaronli 上身了 😂😂
自從做錯事後，我從此都沒有再喝茅台了...
所以最錯的事是沒喝茅台！！
飲！🍻🍻🍻
Prices of deuterated solvents are just crazy!
http://www.deutero.de/en/nmr-solvents.html
I miss the lab
Yes, I was really suprized the price difference between deuterated chloroform and deuterated DCM, which is unbelieveable
our professor always was mad when we had to use deuterated DCM or toluene-D8. But sometimes theres no other way. nmr spectra of badly solved molecules are useless
Definitely! Usually the problem is solubility so I have to use alternatives.
d6-benzene was slightly cheaper than I expected ~ but to do benzylic proton exchange to deuterium should be much more challenging so the price is higher (?)
(I expect d6-benzene was made by hydrogenation and dehydrogenation with D2 gas on some catalyst)
When I remember correcly for benzene it is possible to just stir or boil(?) it with D2SO4 for proton exchange. A colleague tried this way for xylene but just ended with a messy black slime...
oh I didnt expect D2SO4 is strong enough!!!
Haha black slime, so sad ~
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STOP23：00我终于写完我的冻豆腐。。。我是最后一个交作业的吧哈哈