An azido-bridged [FeII4] grid-like molecule showing spin crossover behaviour.
Zhilin GuoMaolin YouYi-Fei DengQiang LiuYin-Shan MengZoe PikramenouYuan-Zhu ZhangPublished in: Dalton transactions (Cambridge, England : 2003) (2021)
The supramolecular self-assembly synthetic strategy provides a valid tool to obtain polynuclear Fe(II) complexes having effective communication between the metal centres and distinct spin crossover behaviour. Despite the great success in constructing various magnetic molecules, progress has not been made in SCO complexes based on azido bridges. In this article, the coordination-driven supramolecular assembly based on 3,6-substituted pyridazine and azide is presented to afford two Fe(II) grid-like complexes: [(L)4FeII4(N3)4][BPh4]4·sol (1, L = 3,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)pyridazine and 2, L = 3,6-di(pyridin-2-yl)pyridazine). The substitution of pyridinyl groups in 2 instead of pyrazolyl ones in 1 led to the only example exhibiting spin-crossover behaviour (T1/2 = 230 K) among the azido-bridged complexes. In addition, a temperature-dependent photoluminescence study of 2 demonstrates a visible synergetic effect between the SCO event and the luminescence.
Keyphrases
- energy transfer
- room temperature
- open label
- density functional theory
- quantum dots
- single molecule
- double blind
- randomized controlled trial
- transition metal
- ionic liquid
- clinical trial
- molecular docking
- escherichia coli
- water soluble
- pseudomonas aeruginosa
- molecularly imprinted
- staphylococcus aureus
- lower urinary tract symptoms