کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1410523 1501870 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural and spectroscopic studies of a new 2-naphthylmethyl ester of lasalocid acid
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Structural and spectroscopic studies of a new 2-naphthylmethyl ester of lasalocid acid
چکیده انگلیسی

A new lasalocid 2-naphthylmethyl ester (NAFB) has been synthesised and studied by X-ray, 1H NMR, 13C NMR, FT-IR, UV–vis, fluorescence-spectroscopy as well as by the PM5 semiempirical method. The crystals of NAFB are monoclinic, space group P21 with a = 10.120(2) Å, b = 18.245(3) Å, c = 12.354(3) Å, β = 109.65(3)˚ and Z = 2. The molecular conformation of NAFB in the solid state is stabilized by three intramolecular hydrogen bonds, and no intermolecular H-bonds are formed. The FT-IR spectrum of NAFB in chloroform indicates equilibrium between two NAFB conformers. In the first conformer the keto group forms an intramolecular hydrogen bond, while in the second one this group is not involved in any hydrogen bonds. The two structures of NAFB are calculated by the PM5 method and discussed in detail.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 918, Issues 1–3, 29 January 2009, Pages 108–115
نویسندگان
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