کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9770157 | 1501940 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular and crystal structures of two matrices for MALDI-TOF-MS: 2-(4-hydroxyphenylazo)benzoic acid and 3,5-dimethoxy-4-hydroxycinnamic acid
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Molecular and crystal structures of two matrices for MALDI-TOF-MS: 2-(4-hydroxyphenylazo)benzoic acid and 3,5-dimethoxy-4-hydroxycinnamic acid Molecular and crystal structures of two matrices for MALDI-TOF-MS: 2-(4-hydroxyphenylazo)benzoic acid and 3,5-dimethoxy-4-hydroxycinnamic acid](/preview/png/9770157.png)
چکیده انگلیسی
2-(4-Hydroxyphenylazo)benzoic acid (1) and 3,5-dimethoxy-4-hydroxycinnamic acid (2) (also known as sinapinic acid), two matrices for the research of matrix-assisted laser desorption/ionization time-of-flight mass spectrum (MALDI-TOF-MS), have been structurally elucidated in this paper. The former packs into the orthorhombic P212121 space group, a solvent water directed single strand helix-forming crystallization from optical inactive compound, constructing a three-dimensional framework with the help of O-Hâ¯O hydrogen bonding interactions and Ï-Ï stacking interactions. As for the latter, an infinite one-dimensional chain is formed via two types of dimeric eight-membered O-Hâ¯O hydrogen bonding rings between the neighboring carboxylic groups as well as the hydroxyl and solvent methanol oxygen atoms, respectively, but no Ï-stacking is observed in its layer packing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 743, Issues 1â3, 31 May 2005, Pages 191-195
Journal: Journal of Molecular Structure - Volume 743, Issues 1â3, 31 May 2005, Pages 191-195
نویسندگان
Huifen Qian, Wei Huang,