A1 Journal article (refereed)
Noncovalent axial I∙∙∙Pt∙∙∙I interactions in platinum(II) complexes strengthen in the excited state (2021)

Bulatov, E., Eskelinen, T., Ivanov, A. Y., Tolstoy, P. M., Kalenius, E., Hirva, P., & Haukka, M. (2021). Noncovalent axial I∙∙∙Pt∙∙∙I interactions in platinum(II) complexes strengthen in the excited state. ChemPhysChem, 22(20), 2044-2049. https://doi.org/10.1002/cphc.202100468

JYU authors or editors

Publication details

All authors or editorsBulatov, Evgeny; Eskelinen, Toni; Ivanov, Alexander Yu.; Tolstoy, Peter M.; Kalenius, Elina; Hirva, Pipsa; Haukka, Matti

Journal or seriesChemPhysChem



Publication year2021

Publication date30/07/2021


Issue number20

Pages range2044-2049


Publication countryGermany

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/78265


Coordination compounds of platinum(II) participate in various noncovalent axial interactions involving metal center. Weakly bound axial ligands can be electrophilic or nucleophilic; however, interactions with nucleophiles are compromised by electron density clashing. Consequently, simultaneous axial interaction of platinum(II) with two nucleophilic ligands is almost unprecedented. Herein, we report structural and computational study of a platinum(II) complex possessing such intramolecular noncovalent I∙∙∙Pt∙∙∙I interactions. Structural analysis indicates that the two iodine atoms approach the platinum(II) center in a “side-on” fashion and act as nucleophilic ligands. According to computational studies, the interactions are dispersive, weak and anti-cooperative in the ground electronic state, but strengthen substantially and become partially covalent and cooperative in the lowest excited state. Strengthening of I∙∙∙Pt∙∙∙I contacts in the excited state is also predicted for the sole previously reported complex with analogous axial interactions.

Keywordsplatinumiodineligandschemical compoundsphysical chemistry

Free keywordsnoncovalent interactions; axial interactions; excited states

Contributing organizations

Ministry reportingYes

Reporting Year2021

JUFO rating1

Last updated on 2024-22-04 at 15:09