Phosphorescent complexes of {Mo6I8}4+with triazolates: [2+3] cycloaddition of alkynes to [Mo6I8(N3)6]2-

Alina D. Mironova, Maksim A. Mikhailov, Konstantin A. Brylev, Artem L. Gushchin, Taisiya S. Sukhikh, Maxim N. Sokolov

Research output: Contribution to journalArticlepeer-review

Abstract

(Bu4N)2[Mo6I8(N3)6], prepared in a clean high-yield reaction from (Bu4N)2[Mo6I8(CH3COO)6] and Me3SiN3, undergoes [3+2] cycloaddition with CH3O(O)CC(O)OCH3 with the formation of a novel hexakis(triazolate) complex, (Bu4N)2[Mo6I8(N3C2(COOCH3)2)6] with symmetrically coordinated 4,5-di(carbmethoxy)triazol-2-yl ligands. The product was characterized by X-ray analysis, NMR, IR and ESI-mass spectrometry. It undergoes a quasi reversible oxidation in CH3CN at E1/2 = 1.36 V (vs. Ag/AgCl) and is red-light emissive upon UV photoexcitation. Reaction with methylpropiolate also yields a corresponding hexakis(triazolate) complex, [Mo6I8(N3C2H(COOCH3))6]2-, which exists as a 1:1 mixture of two isomers. Alkynes that lacking strongly electron-withdrawing substituents fail to undergo the cycloaddition reaction. This journal is

Original languageEnglish
Pages (from-to)20620-20625
Number of pages6
JournalNew Journal of Chemistry
Volume44
Issue number47
DOIs
Publication statusPublished - 21 Dec 2020

Keywords

  • RHENIUM CLUSTER COMPLEXES
  • OCTAHEDRAL HEXARHENIUM(III) COMPLEXES
  • EXCITED-STATE PROPERTIES
  • HEXANUCLEAR MOLYBDENUM
  • SUPRAMOLECULAR ASSEMBLIES
  • PHOTOPHYSICAL PROPERTIES
  • IODIDE CLUSTER
  • LUMINESCENCE
  • AZIDES
  • REDOX

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