Photoinduced phase transition of the tetrafluoroborate salt of bis(N,N-diethylethylenediamine)copper(II)

Panče Naumov, Kenji Sakurai

Research output: Contribution to journalArticlepeer-review


The continuous temperature-induced change of the ligand field strain in a pseudo-Jahn-Teller thermochromic crystal bis(N,N-diethylethylenediamine)copper(II) tetrafluoroborate was studied. In situ powder photodiffraction was employed to demonstrate that at the low-temperature limit of the gradual lattice stability another structural phase transition can be triggered by photoinduction of the intramolecular ligand-to-metal charge transfer. The minute differences in the cationic structure imposed by the isomorphic ionic substitution result in increase of the temperature of the photoinduced phase transition of about 30 K relative to the perchlorate salt.

Original languageEnglish (US)
Pages (from-to)343-345
Number of pages3
JournalChemical Physics Letters
Issue number4-6
StatePublished - Aug 31 2006

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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