6533b7d0fe1ef96bd125ad98
RESEARCH PRODUCT
Pyridazine-Supported Polymeric Cyanometallates with Spin Transitions
Il'ya A. Gural'skiyVadim KsenofontovSergii I. ShylinSergii I. ShylinWolfgang Tremelsubject
Condensed matter physics010405 organic chemistry02 engineering and technology021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesInorganic ChemistryPyridazinechemistry.chemical_compoundchemistrySpin crossoverMössbauer spectroscopy0210 nano-technologySpin (physics)description
Heterometallic cyano-bridged spin-crossover complexes form a large family of switchable compounds with different structural motives and diverse transition characteristics. Here we report on the hysteretic water-dependent spin transitions found in the family of [Fe(pyridazine)2M(CN)4] frameworks (M = Ni, Pd, Pt). The structure of three new spin-crossover compounds is built of cyanometallic layers supported by pyridazine ligands. The frameworks contain water guest molecules that can be removed upon heating. Spin transition was found in both hydrated and dehydrated compounds, while the removal of water stimulated a complete spin state switch. Mössbauer spectroscopy revealed two different high-spin centers in hydrated frameworks, and only one of them is switchable. The compounds display a pronounceable thermochromism, changing their color from red in low-spin to yellow in high-spin. The work shows a perspective of 1,2-diazine application for the design of switchable complexes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-10-06 | European Journal of Inorganic Chemistry |