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Vapochromic behaviour of a nickel(ii)-quinonoid complex with dimensional changes between 1D and higher
- Source :
- Dalton transactions. 50(25):8696-8703
- Publication Year :
- 2021
- Publisher :
- Royal Society of Chemistry, 2021.
-
Abstract
- The nickel(ii)-chloranilato complex {Ni(ca)(VM)(2)}(n) (H(2)ca = chloranilic acid, VM = coordinated vapour molecules, such as water) shows reversible vapochromism upon exposure to various vapours and subsequent drying by heating. In contrast to the Ni(ii)-quinonoid complex, [Ni(HLMe)(2)] (H2LMe = 4-methylamino-6-methyliminio-3-oxocyclohexa-1,4-dien-1-olate), which was reported to exhibit vapochromic spin-state switching between high and low spin states, the chloranilato complex does not change its spin state even after the removal of coordinated vapour molecules. X-ray absorption fine structure (XAFS) analysis revealed that the six-coordinate geometry of {Ni(ca)(VM)(2)}(n) was maintained even after the removal of vapour molecules, in contrast to the [Ni(HLMe)(2)] complex. The unique vapochromism that follows the dimensional change between 1D and higher is influenced by the relatively weaker ligand field of the chloranilate ligand.
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 50
- Issue :
- 25
- Database :
- OpenAIRE
- Journal :
- Dalton transactions
- Accession number :
- edsair.jairo.........e4dec47b770a032920de469b919a23de