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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Binding Matter with Antimatter: The Covalent Positron Bond

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Author(s):
Charry, Jorge [1] ; Varella, Marcio T. do N. [2] ; Reyes, Andres [1]
Total Authors: 3
Affiliation:
[1] Univ Nacl Colombia Chem, Av Cra 30 45-03, Bogota 00000 - Colombia
[2] Univ Sao Paulo, Inst Fis, Rua Matao 1731, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION; v. 57, n. 29, p. 8859-8864, JUL 16 2018.
Web of Science Citations: 5
Abstract

We report sufficient theoretical evidence of the energy stability of the e(+)H(2)(2-) molecule, formed by two H- anions and one positron. Analysis of the electronic and positronic densities of the latter compound undoubtedly points out the formation of a positronic covalent bond between the otherwise repelling hydride anions. The lower limit for the bonding energy of the e(+)H(2)(2-) molecule is 74kJmol(-1) (0.77eV), accounting for the zero-point vibrational correction. The formation of a non electronic covalent bond is fundamentally distinct from positron attachment to stable molecules, as the latter process is characterized by a positron affinity, analogous to the electron affinity. (AU)

FAPESP's process: 14/10012-9 - Molecular transients
Grantee:Márcio Teixeira do Nascimento Varella
Support Opportunities: Regular Research Grants