Rotational Spectromicroscopy: Imaging the Orbital Interaction between Molecular Hydrogen and an Adsorbed Molecule.
Phys Rev Lett
; 114(20): 206101, 2015 May 22.
Article
en En
| MEDLINE
| ID: mdl-26047242
ABSTRACT
A hydrogen molecule can diffuse freely on the surface and be trapped above an adsorbed molecule within the junction of a scanning tunneling microscope. The trapped dihydrogen exhibits the properties of a free rotor. Here we show that the intermolecular interaction between dihydrogen and Mg-porphyrin (MgP) can be visualized by imaging j=0 to 2 rotational excitation of dihydrogen. The interaction leads to a weakened H-H bond and modest electron donation from the dihydrogen to the lowest unoccupied molecular orbital of MgP, a process similarly observed for the interaction between dihydrogen and an adsorbed Au atom.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Porfirinas
/
Hidrógeno
/
Magnesio
/
Modelos Químicos
Idioma:
En
Revista:
Phys Rev Lett
Año:
2015
Tipo del documento:
Article
País de afiliación:
Estados Unidos