Optical and magnetic properties of the complex bis(dicyclooctatetraenyl) diuranium. A theoretical view

Dayán Páez-Hernández, Juliana Andrea Murillo-López, Ramiro Arratia-Pérez

Research output: Contribution to journalReview articlepeer-review

12 Citations (Scopus)

Abstract

A systematic study on bis(dicyclooctatetraenyl)diuranium (U 2COT 4) has been performed using relativistic density functional theory. The molecule was calculated in four different electronic configurations and the two symmetries C 2 and D 2h. First we considered the high-spin quintuplet ( 5A) state, and from this state we built the broken-symmetry configuration following Noodleman's approach. Also, the triplet state was considered as a formal interaction of both uranocene fragments in triplet and singlet states simultaneously, and finally the low-spin singlet configuration was calculated. For both symmetries the ground state of the complex was the quintuplet, and on the basis of the broken-symmetry approach a significant ferromagnetic coupling between both metals was found. Time-dependent density functional theory (TDDFT) was used to calculate the excitation energies with the GGA SAOP functional. The obtained electronic transitions are in good correlation with reported experimental values, which are found between 600 and 720 nm: 633, 658, 664, 673, 685, and 717 nm.

Original languageEnglish
Pages (from-to)6297-6304
Number of pages8
JournalOrganometallics
Volume31
Issue number17
DOIs
Publication statusPublished - 10 Sep 2012

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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