A DFT study of NMR parameters for MgO nanotubes

International Journal of Nano Dimension

مقاله 2، دوره 4، شماره 1، آبان 2013، صفحه 1-6   

نوع مقاله: Reasearch Paper

شناسه دیجیتال (DOI): 10.7508/ijnd.2013.01.001

نویسندگان

M. Farahani¹؛ Z. Ghasemi²؛ A. Seif^{* 2}

¹Sama technical and vocational training collage, Islamic Azad University, malayer Branch, Malayer, Iran.

²Department of Chemistry, Boroujerd Branch, Islamic Azad University, Boroujerd, Iran.

چکیده

Magnesium oxide nanotubes of finite length are investigated by the Density Functional Theory (DFT) at the B3LYP/6-31G (d) level. The (6, 0) zigzag and (4, 4) armchair of MgO nanotubes were considered and nuclear magnetic resonance properties including isotropic and anisotropic chemical shielding parameters (CSI and CSA) were calculated for ²⁵Mg and ¹⁷O atoms of the optimized structures for the first time. The calculated CS parameters indicated that the Mg atoms cause slight changes of electronic environment in the MgONT structures, but the changes for the O atoms are more significant. Results indicated that the zigzag MgONTs could be considered a more reactive material than the armchair model for interactions with other atoms or molecules.

کلیدواژه‌ها

Density Functional Theory (DFT)؛ Magnesium Oxide nanotubes؛ Chemical shielding؛ Nuclear Magnetic Resonance(NMR)