Unraveling actinide–actinide bonding in fullerene cages: a DFT versus ab initio methodological study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F23%3A00578866" target="_blank" >RIV/61388963:_____/23:00578866 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/23:10478969

Výsledek na webu

<a href="https://doi.org/10.1039/D3CP03606E" target="_blank" >https://doi.org/10.1039/D3CP03606E</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3cp03606e" target="_blank" >10.1039/d3cp03606e</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unraveling actinide–actinide bonding in fullerene cages: a DFT versus ab initio methodological study

Popis výsledku v původním jazyce

Actinide-actinide bonding poses a challenge for both experimental and theoretical chemists because of both the scarcity of experimental data and the exotic nature of actinide bonding due to the involvement and mixing of actinide 7s-, 6p-, 6d-, and particularly 5f-orbitals. Only a few experimental examples of An-An bonding have been reported so far. Here, we perform a methodological study of actinide-actinide bonding on experimentally known Th2@C80 and U2@C80 systems. We compared selected GGA, meta-GGA, hybrid-GGA and range-separated hybrid-GGA functionals with the results obtained using a multireference CASPT2 method, which we consider as a reference point. We show that functionals such as BP86, PBE or TPSS perform well for predicting geometries, while range-separated hybrids are superior in the description of the chemical bonding. None of the tested functionals were deemed reliable regarding the correct electronic spin ground state. Based on the results of this methodological study, we re-evaluate selected previously studied diactinide fullerene systems using more reliable protocol.

Název v anglickém jazyce

Unraveling actinide–actinide bonding in fullerene cages: a DFT versus ab initio methodological study

Popis výsledku anglicky

Actinide-actinide bonding poses a challenge for both experimental and theoretical chemists because of both the scarcity of experimental data and the exotic nature of actinide bonding due to the involvement and mixing of actinide 7s-, 6p-, 6d-, and particularly 5f-orbitals. Only a few experimental examples of An-An bonding have been reported so far. Here, we perform a methodological study of actinide-actinide bonding on experimentally known Th2@C80 and U2@C80 systems. We compared selected GGA, meta-GGA, hybrid-GGA and range-separated hybrid-GGA functionals with the results obtained using a multireference CASPT2 method, which we consider as a reference point. We show that functionals such as BP86, PBE or TPSS perform well for predicting geometries, while range-separated hybrids are superior in the description of the chemical bonding. None of the tested functionals were deemed reliable regarding the correct electronic spin ground state. Based on the results of this methodological study, we re-evaluate selected previously studied diactinide fullerene systems using more reliable protocol.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA21-17806S" target="_blank" >GA21-17806S: Endohedrální fullereny pro molekulární součástky: Memristory a spinristory</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

1463-9084

Svazek periodika

25

Číslo periodika v rámci svazku

45

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

31500-31513

Kód UT WoS článku

001104999800001

EID výsledku v databázi Scopus

2-s2.0-85176803302