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2024-08-21

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cc by (c) Raïch Panisello, Ot et al., 2024
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/228570

No Switching Cooperativity between Coordinated Azo Ligands on Complexes Having $M^{II}(phosphane-k^2P)\}^{2+}\ ( M = Pd, Pt)$ Scaffolds

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https://doi.org/10.1021/acs.inorgchem.4c02169

Resum

A series of square-planar palladium and platinum compounds with cis-blocking phosphanes and terminal azobenzene ligands ${[M(dppp)-(azo)_{2}] (OTf)_{2} (azo = CN(C_{6}H_{4})-N = N-(C_{6}H_{4})CN (iso-cyano), CN(C_{6}H_{4})-N = N-(C_{6}H_{5}) (iso-Ph)) and [{M_{2}(tpbz)}(azo)_{4}](OTf)_{4}(azo = CN(C_{6}H_{4})-N = N-(C_{6}H_{5})}$ have been synthesized and fully characterised. Similarly to the uncoordinated ligands, the new coordination compounds have shown to be photochemically active with respect to their trans-to-cis isomerization process. Their cis-to-trans back spontaneous reaction have been studied as a function of solvent, temperature and pressure and the corresponding activation parameters determined in order to investigate the mechanism of these transformations. The results obtained are indicative of the operation of a rotational mechanism with no cooperativity between the azo ligands attached to the same metal. DFT calculations have been carried out in order to estimate the relative energies of the different photoisomers for the theoretical interpretation of the experimental data.

Matèries

Lligands, Pal·ladi (Element químic), Dissolvents, Platí

Matèries (anglès)

Ligands, Palladium, Solvents, Platinum

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Articles publicats en revistes (Química Inorgànica i Orgànica)
Articles publicats en revistes (Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB))
Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB))
Articles publicats en revistes (Institut de Química Teòrica i Computacional (IQTCUB))

Citació

RAÏCH PANISELLO, Ot, JOVER MODREGO, Jesús, PUIGJANER VALLET, Ma. cristina, FERRER GARCÍA, Montserrat, MARTÍNEZ LÓPEZ, Manuel. No Switching Cooperativity between Coordinated Azo Ligands on Complexes Having $M^{II}(phosphane-k^2P)\}^{2+}\ ( M = Pd, Pt)$ Scaffolds. _Inorganic Chemistry_. 2024. Vol. 63, núm. 16251-16263. [consulta: 4 de maig de 2026]. ISSN: 0020-1669. [Disponible a: https://hdl.handle.net/2445/228570]

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