英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

dimethyl    
二甲基

二甲基


请选择你想看的字典辞典：
单词字典翻译
Dimethyl查看　Dimethyl　在百度字典中的解释百度英翻中〔查看〕
Dimethyl查看　Dimethyl　在Google字典中的解释Google英翻中〔查看〕
Dimethyl查看　Dimethyl　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Difference between a dimethyl and ethyl substituent groups
    1 I'm teaching myself organic chemistry and am struggling with differentiating between dimethyl and ethyl substituent groups Example: tert-butyl (1,1-dimethylethyl) This chapter follows the one on bond-line structures, and I realize one of the rules for making a valid bond-line structure for straight-chain alkanes involves zig-zagging carbon
  • How can dimethyl maleate be converted to dimethyl fumarate using . . .
    How can dimethyl maleate be converted to dimethyl fumarate using piperidine? Ask Question Asked 2 years, 3 months ago Modified 2 years, 3 months ago
  • Do we understand why Dimethyl Mercury is so toxic?
    As related in the book titled “Ignition!”, by John Drury Clark, it was once proposed to fire up a test rocket engine using 100 pounds of dimethyl mercury reacting with red fuming nitric acid Fortunately, Eastman Kodak declined to produce the dimethyl mercury The person who proposed using dimethyl mercury as rocket fuel thought is was “harmless as mother’s milk”
  • organic chemistry - Nomenclature - Common vs IUPAC Names and . . .
    No, 2,2-dimethyl-7- (1-methylethyl)bicyclo [3 2 0]heptane is not an acceptable name Like the rule you quoted says, start numbering at a bridgehead carbon and first pass through the largest ring (in this case the 5-membered ring) and number that ring so that a substituent will have the lowest number So this molecule would be named 2-isopropyl-7,7-dimethyl-bicyclo [3 2 0]heptane Usage of "1
  • What is the number of different compounds formed from the . . .
    What is the number of different compounds formed from the monochlorination of cis-1,2-dimethyl cyclopentane? Ask Question Asked 2 years, 1 month ago Modified 10 months ago
  • Why DMSO has much higher freezing point than DMF (19 °C vs -61 °C)?
    From Wikipedia, I found out that DMSO (dimethyl sulfoxide) has a freezing point of 19 °C (ref 1) while DMF (dimethylformamide) has a freezing point of -61 °C (ref 2)!
  • everyday chemistry - How long can dimethyl sulfoxide be safely stored . . .
    How long can dimethyl sulfoxide be contained in a HDPE barrier bottle without any reaction between the plastic and the solvent? I have read that DMSO is not reactive with HDPE, but I would like to know if anyone has alternative data
  • coordination compounds - Chemistry Stack Exchange
    9 So, DMSO (dimethyl sulfoxide) can form metal complexes in both $\ce {\kappa-O}$ and $\ce {\kappa-S}$ mode i e binding with the oxygen or the sulfur respectively The general explanation given is that softer metal ions bind to the soft centre $\ce {S}$ and hard metal ions bind to the hard centre $\ce {O}$
  • what is mechanism for reaction phenol + dimethylsulphate - gt; anisole
    Dimethyl sulphate breaks the oh bond and forms anisole How does the reaction proceed?? is it oxygen lone pair attacks on sulphur which has partial positive charge?? the reaction takes place in pre





中文字典-英文字典  2005-2009