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dc.contributor.author
Pagola, Gabriel Ignacio  
dc.contributor.author
Ferraro, Marta Beatriz  
dc.contributor.author
Provasi, Patricio Federico  
dc.contributor.author
Pelloni, Stefano  
dc.contributor.author
Lazzeretti, Paolo  
dc.date.available
2022-12-21T10:42:51Z  
dc.date.issued
2021-07  
dc.identifier.citation
Pagola, Gabriel Ignacio; Ferraro, Marta Beatriz; Provasi, Patricio Federico; Pelloni, Stefano; Lazzeretti, Paolo; Physical achirality in geometrically chiral rotamers of hydrazine and boranylborane molecules; John Wiley & Sons; Journal of Computational Chemistry; 42; 25; 7-2021; 1772-1782  
dc.identifier.issn
0192-8651  
dc.identifier.uri
http://hdl.handle.net/11336/181858  
dc.description.abstract
The diagonal components and the trace of tensors which account for chiroptical response of the hydrazine molecule N2H4, that is, static anapole magnetizability and frequency-dependent electric dipole-magnetic dipole polarisability, are a function of the (Formula presented.) H─N─N─H dihedral angle. They vanish for symmetry reasons at ϕ = 0° and ϕ = 180°, corresponding respectively to C2v and C2h point group symmetries, that is, cis and trans conformers characterized by the presence of molecular symmetry planes. Nonetheless, vanishing diagonal components have been observed also in the proximity of (Formula presented.) H─N─N─H = 90°, in which the point group symmetry is C2 and hydrazine is unquestionably chiral. In the boranylborane molecule B2H4, assuming the B─B bond in the y direction, the ayy component of the anapole magnetizability tensor approximately vanishes for dihedral angles (Formula presented.) H─B─B─H corresponding to chiral rotamers which belong to D2 symmetry. Such anomalous effects have been ascribed to physical achirality of these conformers, that is, to their inability to sustain electronic current densities inducing either anapole moments, or electric and magnetic dipole moments, about the chiral axis connecting heavier atoms, as well as perpendicular directions. In other terms, the structure of certain geometrically chiral rotamers may be such that neither toroidal nor helical flow, which determine chiroptical phenomenology, can take place in the presence of perturbing fields parallel or orthogonal to the chiral axis.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
John Wiley & Sons  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ANAPOLE MOMENT  
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CHEMICAL CHIRALITY  
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GEOMETRICAL CHIRALITY  
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OPTICAL ACTIVITY  
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PHYSICAL ACHIRALITY  
dc.subject.classification
Física Atómica, Molecular y Química  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Physical achirality in geometrically chiral rotamers of hydrazine and boranylborane molecules  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-09-28T13:40:21Z  
dc.journal.volume
42  
dc.journal.number
25  
dc.journal.pagination
1772-1782  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
New York  
dc.description.fil
Fil: Pagola, Gabriel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina  
dc.description.fil
Fil: Ferraro, Marta Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina  
dc.description.fil
Fil: Provasi, Patricio Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Modelado e Innovación Tecnológica. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Modelado e Innovación Tecnológica; Argentina  
dc.description.fil
Fil: Pelloni, Stefano. Istituto D'istruzione Superiore Francesco Selmi, Modena; Italia  
dc.description.fil
Fil: Lazzeretti, Paolo. Universita di Salerno; Italia  
dc.journal.title
Journal of Computational Chemistry  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/jcc.26709  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/jcc.26709