Nucleophilic addition of hydrazine and benzophenone hydrazone to 2-acetonitrilium closo-decaborate cluster: Structural and photophysical study

Valeria K. Burianova, Dmitrii S. Bolotin, Alexander S. Novikov, Ilya E. Kolesnikov, Vitalii V. Suslonov, Andrey P. Zhdanov, Konstantin Yu Zhizhin, Nikolay T. Kuznetsov

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The reaction of hydrazine and benzophenone hydrazone with 2-acetonitrilium closo-decaborate (X)[B10H9NCMe] (X = PhCH2PPh3, Ph4P, nBu4N) proceeds in MeCN or THF at RT for 30 min giving 2-iminium closo-decaborates (X)[B10H9N(H)[dbnd]C(Me)NNR2] (R2 = (H)2, CPh2; X = PhCH2PPh3, Ph4P, nBu4N) that were isolated in 77–88% yields. These species were characterized by IR, 1H{11B}, 11B{1H}, and 13C{1H} NMR spectroscopies, HRESI-MS, and molar conductivity. Two compounds were also characterized by single-crystal X-ray diffraction. Emission spectra of the obtained compounds consist of one broad band with the maximum in the 506–516 nm range. Nanosecond lifetimes of the closo-decaborate clusters confirm fluorescent character of the emission. Derivatization of the nitrilium ligand results in increase of luminescence up to 42% as compared to the starting nitrilium closo-decaborate.

Original languageEnglish
Pages (from-to)838-845
Number of pages8
JournalInorganica Chimica Acta
Volume482
DOIs
StatePublished - 1 Oct 2018

Scopus subject areas

  • Materials Chemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Keywords

  • Closo-decaborate
  • Hydrazine
  • Luminescence
  • Nitrilium salt
  • Nucleophilic addition
  • ANION DERIVATIVES
  • CRYSTAL-STRUCTURE
  • BORON CLUSTERS
  • COMPLEXES
  • B-H ACTIVATION
  • CARBORANE
  • NEUTRON-CAPTURE THERAPY
  • METAL
  • LIGAND
  • 1ST EXAMPLE

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