Substituent effects on the fluorescent spin-crossover Fe(ii) complexes of rhodamine 6G hydrazones

Juan Yuan, Mei Jiao Liu, Shu Qi Wu, Xin Zhu, Nan Zhang, Osamu Sato, Hui Zhong Kou

Research output: Contribution to journalArticle

Abstract

Two new complexes were constructed via the coordination of fluorophores with Fe(ii) ions to study the effects of ligand substituents on fluorescent-spin crossover (SCO) materials. Single-crystal structural determination suggests that the central iron(ii) of complexes 1-2 adopted an N 4 O 2 coordination configuration, chelated by two ligands L 1 or L 2 . The π⋯π stacking interaction between the π-conjugated xanthene groups of the adjacent ligands for complex 1 is apparently stronger than that for complex 2. Magnetic susceptibility measurements show that complex 1 is high spin, while complex 2 is diamagnetic at room temperature. Interestingly, the desolvated form 1-d of complex 1 exhibits SCO behavior (T c = 175 K) without hysteresis. Significantly, complex 1-d displays the correlation between the spin crossover and the fluorescence.

Original languageEnglish
Pages (from-to)1170-1176
Number of pages7
JournalInorganic Chemistry Frontiers
Volume6
Issue number5
DOIs
Publication statusPublished - May 1 2019

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Hydrazones
Ligands
Xanthenes
Fluorophores
Magnetic susceptibility
Hysteresis
Iron
Fluorescence
Single crystals
Ions
rhodamine 6G
Temperature

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

Cite this

Substituent effects on the fluorescent spin-crossover Fe(ii) complexes of rhodamine 6G hydrazones. / Yuan, Juan; Liu, Mei Jiao; Wu, Shu Qi; Zhu, Xin; Zhang, Nan; Sato, Osamu; Kou, Hui Zhong.

In: Inorganic Chemistry Frontiers, Vol. 6, No. 5, 01.05.2019, p. 1170-1176.

Research output: Contribution to journalArticle

Yuan, Juan ; Liu, Mei Jiao ; Wu, Shu Qi ; Zhu, Xin ; Zhang, Nan ; Sato, Osamu ; Kou, Hui Zhong. / Substituent effects on the fluorescent spin-crossover Fe(ii) complexes of rhodamine 6G hydrazones. In: Inorganic Chemistry Frontiers. 2019 ; Vol. 6, No. 5. pp. 1170-1176.
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AU - Sato, Osamu

AU - Kou, Hui Zhong

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