We extend the Charge-Displacement (CD) analysis, already successfully employed to describe the nature of intermolecular interactions [L. Belpassi et al., J. Am. Chem. Soc. 132, 13046 (2010)] and various types of controversial chemical bonds [L. Belpassi et al., J. Am. Chem. Soc. 130, 1048 (2008); N. Salvi et al., Chem. Eur. J. 16, 7231 (2010)], to study the charge fluxes accompanying electron excitations, and in particular the all-important charge-transfer (CT) phenomena. We demonstrate the usefulness of the new approach through applications to exemplary excitations in a series of molecules, encompassing various typical situations from valence, to Rydberg, to CT excitations. The CD functions defined along various spatial directions provide a detailed and insightful quantitative picture of the electron displacements taking place.
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7 February 2014
Research Article|
February 05 2014
Charge-displacement analysis for excited states
Enrico Ronca;
Enrico Ronca
a)
1
Istituto CNR di Scienze e Tecnologie Molecolari
, via Elce di Sotto 8, I-06123 Perugia, Italy
2Dipartimento di Chimica, Biologia e Biotecnologie,
Università degli Studi di Perugia
, via Elce di Sotto 8, I-06123 Perugia, Italy
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Mariachiara Pastore;
Mariachiara Pastore
b)
1
Istituto CNR di Scienze e Tecnologie Molecolari
, via Elce di Sotto 8, I-06123 Perugia, Italy
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Leonardo Belpassi;
Leonardo Belpassi
1
Istituto CNR di Scienze e Tecnologie Molecolari
, via Elce di Sotto 8, I-06123 Perugia, Italy
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Filippo De Angelis;
Filippo De Angelis
1
Istituto CNR di Scienze e Tecnologie Molecolari
, via Elce di Sotto 8, I-06123 Perugia, Italy
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Celestino Angeli;
Celestino Angeli
3Dipartimento di Scienze Chimiche e Farmaceutiche,
Università degli Studi di Ferrara
, via Borsari 46, I-44100 Ferrara, Italy
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Renzo Cimiraglia;
Renzo Cimiraglia
3Dipartimento di Scienze Chimiche e Farmaceutiche,
Università degli Studi di Ferrara
, via Borsari 46, I-44100 Ferrara, Italy
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Francesco Tarantelli
Francesco Tarantelli
c)
1
Istituto CNR di Scienze e Tecnologie Molecolari
, via Elce di Sotto 8, I-06123 Perugia, Italy
2Dipartimento di Chimica, Biologia e Biotecnologie,
Università degli Studi di Perugia
, via Elce di Sotto 8, I-06123 Perugia, Italy
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a)
Electronic mail: enrico@thch.unipg.it
b)
Electronic mail: chiara@thch.unipg.it
c)
Electronic mail: francesco.tarantelli@unipg.it
J. Chem. Phys. 140, 054110 (2014)
Article history
Received:
November 18 2013
Accepted:
January 15 2014
Citation
Enrico Ronca, Mariachiara Pastore, Leonardo Belpassi, Filippo De Angelis, Celestino Angeli, Renzo Cimiraglia, Francesco Tarantelli; Charge-displacement analysis for excited states. J. Chem. Phys. 7 February 2014; 140 (5): 054110. https://doi.org/10.1063/1.4863411
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