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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hatcher, Lauren E.
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Publications (5/5 displayed)
- 2022LED-pump-X-ray-multiprobe crystallography for sub-second timescalescitations
- 2020Phase behavior and substitution limit of mixed cesium-formamidinium lead triiodide perovskitescitations
- 2019Photocrystallographic studies on transition metal nitrito metastable linkage isomers: manipulating the metastable statecitations
- 2016Observation of a re-entrant phase transition in the molecular complex tris(μ2-3,5-diisopropyl-1,2,4-triazolato-κ2N1:N2)trigold(I) under high pressurecitations
- 2012Photoactivated linkage isomerism in single crystals of nickel, palladium and platinum di-nitro complexes: A photocrystallographic investigationcitations
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article
Photoactivated linkage isomerism in single crystals of nickel, palladium and platinum di-nitro complexes: A photocrystallographic investigation
Abstract
Low temperature, single crystal photocrystallographic studies have been carried out on four square planar Group 10 complexes [Ni(PEt 3 ) 2 (NO 2 ) 2 ] 1, [Pd(PPh 3 ) 2 (NO 2 ) 2 ] 2, [Pd(AsPh 3 ) 2 (NO 2 ) 2 ] 3 and [Pt(PPh 3 ) 2 (NO 2 ) 2 ] 4, in which the two nitro groups adopt the trans configuration. Irradiation with UV light, at 100 K, of single crystals of complexes 1-3 photoisomerise from the η 1 -NO 2 nitro form to the η 1 -ONO nitrito form occurred. Complex 1 underwent 25% conversion to the nitrito form before crystal decomposition occurred. 2 and 3 underwent 46% and 39% conversion, respectively, to the nitrito form when a photostationary state was reached. While under the same experimental conditions 4 showed no isomerisation. The photocrystallographic results can be correlated with the results of DFT calculations and with the observed trends in the solution UV/visible absorption spectroscopy obtained for these complexes. The results suggest that while steric factors in the isomerization processes are important there may also be a kinetic effect relating to the lability of the metal involved.