Artículo
High-Level Electron Correlation of the Indirect Nuclear Spin-Spin Coupling Constants in Some Small Diboranes and Lithium-Doped Diboranes
Fecha de publicación:
06/2021
Editorial:
Wiley-VCH
Revista:
ChemistrySelect
ISSN:
2365-6549
e-ISSN:
2365-6549
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We have investigated the spin-spin coupling constants (SSCC's) of diborane(4) and diborane(6), their Li-doped counterparts, and the dimerization of diborane(6), using the second order polarization propagator approximation with coupled cluster singled and double [SOPPA(CCSD)] substitutions. We employed an adapted basis set to perform the calculations of their SSCC's. Energetically, from optimized structures at second-order Møller-Plesset perturbation theory, our results indicate that the stable isomers of diborane(4) may exist as independent molecular entities, separate by ~20 kJ/mol, obtained in our best level of calculation. Distinct geometric configurations and energetic stability are well related to the nuclear coupling mechanism in these diborane compounds. We found that dimerization of diborane(6) is possible with different symmetries, although it does not significantly change the geometric parameters of the monomers. This is also confirmed by the SSCC's calculations with SOPPA(CCSD).
Palabras clave:
DIBORANES
,
DIMERIZATION
,
NMR
,
SOPPA(CCSD)
,
SSCC
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Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos(IMIT)
Articulos de INST.DE MODELADO E INNOVACION TECNOLOGICA
Articulos de INST.DE MODELADO E INNOVACION TECNOLOGICA
Citación
Santos Neto, Antonio P.; Rivelino, Roberto; Pagola, Gabriel Ignacio; Provasi, Patricio Federico; High-Level Electron Correlation of the Indirect Nuclear Spin-Spin Coupling Constants in Some Small Diboranes and Lithium-Doped Diboranes; Wiley-VCH; ChemistrySelect; 6; 22; 6-2021; 5451-5465
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