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Exploring 11B and 15N NMR parameters of C70−2x (BN) x fullerenes (x = 3–25) in connection with local structures and curvature effects: a DFT study. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-013-1103-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Sedghamiz E, Halfinezhad Z, Shiroudi A, Zahedi E. Influence of NO2 attachment on the nuclear magnetic shielding tensors of N and B nuclei in C30B15N15 heterofullerene: a DFT study. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-012-0886-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Anafcheh M, Ghafouri R. Theoretical studies on one-dimensional polymers constructed from BN-substituted C36 fullerene. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.04.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ponikvar-Svet M, Zeiger DN, Keating LR, Liebman JF. Interplay of thermochemistry and Structural Chemistry, the journal (volume 23, 2012, issues 4–6) and the discipline. Struct Chem 2013. [DOI: 10.1007/s11224-013-0280-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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ANAFCHEH MARYAM, GHAFOURI REZA, NADERI FERESHTEH. COMPUTATIONAL NICS AND 13C NMR ChARACTERIZATION OF SUBSTITUTION PATTERNS OF C60-nNn FULLERENES (n = 1–12). JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2013. [DOI: 10.1142/s0219633613500090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
DFT calculations are applied to evaluate the effects of atomic arrangements of dopant atoms on electronic features of the most stable structures of C 60−n N n(n = 1–12) fullerenes. Our study reveals that 13 C isotropic chemical shifts (δiso) of the nuclei at C–N pentagon–hexagon (ph) junctions appear at downfield values while there are no tangible values of δiso for the nuclei at C–N hexagon–hexagon (hh) junctions; the carbon sites attached to the first neighbors of nitrogen at hh junctions (the second neighboring effect) yield upfield values of δiso. Moreover, compensation between diatropic and paratropic ring currents leads to slightly less negative NICS value in C59N heterofullerene (-3.6) compared to the parent fullerene C60 (-4.25). However, with incorporating more nitrogen atoms into the cage the aromaticity first increases, up to the 66π-system C54N6 and C53N7 , yielding the most negative NICS values of -26.3 and -26.8, respectively, and then decreases so that NICS finally reaches the value of -6.6 ppm for C48N12 heterofullerene. On the basis of distinct value predicted for each heterofullerene, one expects that NICS values may also be useful for identification of the molecules through their endohedral 3 He NMR chemical shifts.
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Affiliation(s)
- MARYAM ANAFCHEH
- Shahr-e Qods Branch, Islamic Azad University, Shahr-e Qods, Tehran, Iran
| | - REZA GHAFOURI
- Shahr-e Qods Branch, Islamic Azad University, Shahr-e Qods, Tehran, Iran
| | - FERESHTEH NADERI
- Shahr-e Qods Branch, Islamic Azad University, Shahr-e Qods, Tehran, Iran
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Exploring the electronic and magnetic properties of zigzag and armchair BC2N nanotubes: a DFT study. Struct Chem 2013. [DOI: 10.1007/s11224-013-0252-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Anafcheh M, Ghafouri R, Naderi F. Electronic and Chemical Characterization of Aluminum–Nitrogen (AlN) Substituted Fullerenes: C58AlN to C24Al12N12. J CLUST SCI 2013. [DOI: 10.1007/s10876-013-0555-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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