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Abstract <p>A series of new volatile cobalt(II) chelates with ligands containing an extended perfluoroalkyl group, [CH<sub>3</sub>C(X)CHC(O)R]<sup>–</sup>, R = C<sub>2</sub>F<sub>5</sub>, X = O (L<sup>1</sup>) or NH (NL<sup>1</sup>); R = C<sub>3</sub>F<sub>7</sub>, X = O (L<sup>2</sup>) or NH (NL<sup>2</sup>), were obtained via a salt metathesis reaction. Elemental analysis and IR spectroscopy were used to confirm the formation of heteroligand complexes [Со(H<sub>2</sub>O)<sub>2</sub>(L<sup>1</sup>)<sub>2</sub>] and [Со(H<sub>2</sub>O)<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>]·<i>n</i>H<sub>2</sub>O (<i>n</i> = 1, 2) in the case of β-diketonates, while homoligand complexes [Со(NL<sup>1</sup>)<sub>2</sub>] and [Со(NL<sup>2</sup>)<sub>2</sub>] were obtained for β-iminoketonates. Single-crystal X-ray diffraction revealed the structures of [Со(CH<sub>3</sub>OH)<sub>2</sub>(L<sup>1</sup>)<sub>2</sub>] (Im, CCDC 2374366) and [Со(H<sub>2</sub>O)<sub>2</sub>(L<sup>2</sup>)<sub>2</sub>]·H<sub>2</sub>O (CCDC 2374367), and comparison with related compounds allowed for the identification of specific structural features of heteroligand cobalt(II) complexes. The thermal behavior of the synthesized complexes was investigated using thermogravimetry and differential scanning calorimetry. The feasibility of chemical vapor deposition of Cо<sub>3</sub>О<sub>4</sub> nanomaterials from [Со(NL<sup>1</sup>)<sub>2</sub>]. was demonstrated. The obtained samples were characterized by X-ray phase analysis, Raman spectroscopy, and scanning electron microscopy.</p>

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Cobalt(II) Complexes with Fluorinated β-Diketones and Their Derivatives for MOCVD Applications

  • 期刊论文

  • 发表日期：

    2025年3月27日

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  • S. I. Dorovskikh,
  • A. S. Sukhikh,
  • V. A. Yatygin,
  • A. E. Turgambaeva,
  • E. A. Maximovskiy,
  • D. P. Pishchur,
  • E. S. Vikulova

摘要

Abstract

A series of new volatile cobalt(II) chelates with ligands containing an extended perfluoroalkyl group, [CH3C(X)CHC(O)R]–, R = C2F5, X = O (L1) or NH (NL1); R = C3F7, X = O (L2) or NH (NL2), were obtained via a salt metathesis reaction. Elemental analysis and IR spectroscopy were used to confirm the formation of heteroligand complexes [Со(H2O)2(L1)2] and [Со(H2O)2(L2)2]·nH2O (n = 1, 2) in the case of β-diketonates, while homoligand complexes [Со(NL1)2] and [Со(NL2)2] were obtained for β-iminoketonates. Single-crystal X-ray diffraction revealed the structures of [Со(CH3OH)2(L1)2] (Im, CCDC 2374366) and [Со(H2O)2(L2)2]·H2O (CCDC 2374367), and comparison with related compounds allowed for the identification of specific structural features of heteroligand cobalt(II) complexes. The thermal behavior of the synthesized complexes was investigated using thermogravimetry and differential scanning calorimetry. The feasibility of chemical vapor deposition of Cо3О4 nanomaterials from [Со(NL1)2]. was demonstrated. The obtained samples were characterized by X-ray phase analysis, Raman spectroscopy, and scanning electron microscopy.