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

IF 0.9 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Russian Journal of General Chemistry Pub Date : 2025-03-27 DOI:10.1134/S1070363224613292

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

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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.

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钴（II）与氟化β-二酮配合物及其衍生物在MOCVD中的应用

一系列新的挥发性钴（II）螯合物，配体含有扩展的全氟烷基，[CH3C(X)CHC(O)R] -, R = C2F5, X = O （L1）或NH (NL1)；R = C3F7, X = O （L2）或NH (NL2)，通过盐还原反应得到。元素分析和红外光谱证实了β-二酮酸酯形成了异寡配配合物[Со（H2O）2(L1)2]和[Со（H2O）2(L2)2]·nH2O (n = 1,2)，而β-亚氨基酮酸酯得到了同寡配配合物[Со（NL1）2]和[Со（NL2）2]。单晶x射线衍射显示了[Со（CH3OH）2(L1)2] （Im, CCDC 2374366）和[Со（H2O）2(L2)2]·H2O （CCDC 2374367）的结构，并与相关化合物进行了比较，从而确定了杂配体钴（II）配合物的具体结构特征。用热重法和差示扫描量热法研究了合成配合物的热行为。化学气相沉积Cо3О4纳米材料的可行性[Со（NL1）2]。是证明。通过x射线相分析、拉曼光谱和扫描电镜对所得样品进行了表征。

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来源期刊

Russian Journal of General Chemistry 化学-化学综合

CiteScore

1.40

自引率

22.20%

发文量

252

审稿时长

2-4 weeks

期刊介绍： Russian Journal of General Chemistry is a journal that covers many problems that are of general interest to the whole community of chemists. The journal is the successor to Russia’s first chemical journal, Zhurnal Russkogo Khimicheskogo Obshchestva (Journal of the Russian Chemical Society ) founded in 1869 to cover all aspects of chemistry. Now the journal is focused on the interdisciplinary areas of chemistry (organometallics, organometalloids, organoinorganic complexes, mechanochemistry, nanochemistry, etc.), new achievements and long-term results in the field. The journal publishes reviews, current scientific papers, letters to the editor, and discussion papers.