Modeling Ne-21 NMR parameters for carbon nanosystems

0397507 - ÚOCHB 2014 RIV GB eng J - Článek v odborném periodiku
Kupka, T. - Nieradka, M. - Kaminský, Jakub - Stobinski, L.
Modeling Ne-21 NMR parameters for carbon nanosystems.
Magnetic Resonance in Chemistry. Roč. 51, č. 10 (2013), s. 676-681. ISSN 0749-1581. E-ISSN 1097-458X
Grant CEP: GA ČR GAP208/11/0105; GA MŠMT(CZ) LH11033
Grant ostatní: AV ČR(CZ) M200551205
Institucionální podpora: RVO:61388963
Klíčová slova: Ne-21 NMR * GIAO NMR * molecular modeling * carbon nanostructures
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 1.559, rok: 2013

The potential of nuclear magnetic resonance (NMR) technique in probing the structure of porous systems including carbon nanostructures filled with inert gases is analysed theoretically using accurate calculations of neon (Ne-21) nuclear magnetic shieldings. The CBS estimates of Ne-21 NMR parameters were performed for single atom, its dimer and neon interacting with acetylene, ethylene and 1,3-cyclopentadiene. Several levels of theory including restricted Hartree-Fock (RHF), MOller-Plesset perturbation theory to the second order (MP2), density functional theory (DFT) with van Voorhis and Scuseria's t-dependent gradient-corrected correlation functional (VSXC), coupled cluster with single and doubles excitations (CCSD), with single, doubles and triples included in a perturbative way (CCSD(T)) and single, doubles and tripes excitations (CCSDT) combined with polarization-consistent aug-pcS-n series of basis sets were employed. The impact of neon confinement inside selected fullerene cages used as an NMR probe was studied at the RHF/pcS-2 level of theory. A sensitivity of neon probe to the proximity of multiple CC bonds in C2H2, C2H4, C5H6 and inside C-28, C-30, C-32, C-34 and C-60 fullerenes was predicted from Ne-21 NMR parameters' changes.
Trvalý link: http://hdl.handle.net/11104/0225130