کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1411638 | 1501868 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen bonds in phenylboronic acids with polyoxaalkyl substituents at ortho-position
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
Phenylboronic acids with polyoxaalkyl substituents at ortho position were synthesized from the corresponding bromides. Structures in solid state, determined by single crystal X-ray diffraction, reveal the presence of inter- and intramolecular hydrogen bonds. Presence of several oxygen atoms in oxaalkyl chains enables the formation of intramolecular hydrogen bonds by B(OH)2 group with different oxygen centers which lead to the formation of bifurcated hydrogen bonds. Investigated compounds were characterized by 1H, 13C, 11B and 17O NMR spectroscopy in solution. Assignment of 1H and 13C signals was made on the basis of HSQC and HMBC spectra. 17O NMR spectra show that in acetonitrile solution hydrogen bonds with solvent molecules are predominant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 920, Issues 1â3, 28 February 2009, Pages 430-435
Journal: Journal of Molecular Structure - Volume 920, Issues 1â3, 28 February 2009, Pages 430-435
نویسندگان
Agnieszka Adamczyk-Woźniak, MichaÅ K. CyraÅski, Aldona DÄ
browska, BÅażej Gierczyk, Paulina Klimentowska, Grzegorz Schroeder, Anna Å»ubrowska, Andrzej SporzyÅski,