Ab-initio study of citrate ion as an oxygen-rich complexing agent

Armando G. Rojas-Hernández, Aned de Leon*, Rafael A. Sabory-García, Rafael Ramírez-Bon, Dainet Berman-Mendoza, Santos J. Castillo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Theoretical studies on conformational analysis, geometry optimizations and frequencies for citrate at the MP2/LANL2DZ level portrait it as a promising candidate for a complexing agent for cadmium (II) ion (Cd2+) and cadmium sulfide (CdS). Natural Bond Orbital (NBO) charges, Delocalization Indices, HOMO/LUMO gaps and surfaces along with absolute electronegativity values were employed to analyze the interactions among the configurations obtained. The most stable structures involved the interaction between the LUMO of Cd2+/CdS and the most dense region of the HOMO of the citrate ion.

Original languageEnglish
Pages (from-to)319-324
Number of pages6
JournalActa Chimica Slovenica
Issue number1
StatePublished - 20 Mar 2020

Bibliographical note

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  • CdS
  • Citrate ion
  • Complexing agent
  • HOMO/LUMO surfaces


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