Assembly of Heterometallic AuICu2I2Cores on the Scaffold of NPPN-Bridging Cyclic Bisphosphine

Irina R. Dayanova, Aliia V. Shamsieva, Igor D. Strelnik, Tatiana P. Gerasimova, Ilya E. Kolesnikov, Robert R. Fayzullin, Daut R. Islamov, Alina F. Saifina, Elvira I. Musina, Evamarie Hey-Hawkins, Andrey A. Karasik

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The row of metallocyclic dinuclear gold(I) complexes with cyclic diphosphines, namely, P-pyridylethyl-substituted 1,5-diaza-3,7-diphosphacyclooctanes, has been obtained. Further interaction of the dinuclear gold(I) complexes with copper(I) iodide gave the first examples of hexanuclear AuI/CuI complexes containing two unusual trinuclear AuICu2I2 fragments. The structures of di- and hexanuclear complexes were confirmed by NMR spectroscopy, ESI mass spectrometry, elemental analysis, and single-crystal X-ray diffraction. All of the obtained complexes are moderate emitters in the solid state. Dinuclear gold(I) complexes displayed a greenish emission with the maxima in the emission spectra at ca. 550 nm. The obtained hexanuclear heterobimetallic AuI/CuI complexes are triplet solid-state blue emitters with the maximum in the emission spectra at 463 and 484 nm. According to the TD-DFT calculations, the observed emission of all studied complexes had a triplet origin and was caused by the 3CC or 3(MLCT) T1 → S0 transitions for dinuclear and hexanuclear complexes, respectively.

    Original languageEnglish
    Pages (from-to)5402-5411
    Number of pages10
    JournalInorganic Chemistry
    Volume60
    Issue number7
    DOIs
    StatePublished - 5 Apr 2021

    Scopus subject areas

    • Physical and Theoretical Chemistry
    • Inorganic Chemistry

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