Structure and phase transitions of azomethine biligand complexes of iron(III) based on 3,4,5-tri(tetradecyloxy)benzoyloxy-4-salicylidene-N′-ethyl-N-ethylenediamine

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• 作者：U. V. Chervonova ; M. S. Gruzdev ; A. M. Kolker…
• 刊名：Journal of Structural Chemistry
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：57
• 期：3
• 页码：478-490
• 全文大小：1,604 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Inorganic Chemistry
  Physical Chemistry
  Atoms, Molecules, Clusters and Plasmas
  Atomic and Molecular Structure and Spectra
  Solid State Physics and Spectroscopy
  Russian Library of Science
  
• 出版者：Springer New York
• ISSN：1573-8779
• 卷排序：57

文摘

New biligand complexes of iron(III) are synthesized based on 3,4,5-tri(tetradecyloxy)benzoyloxy-4-salicylidene-N′-ethyl-N-ethylenediamine azomethine with the outer sphere NO<sub>3sub>−sup>, PF<sub>6sub>−sup>, Cl−sup>, BF<sub>4sub>−sup>, ClO<sub>4sub>−sup>, and CNS–sup> anions. All the target compounds are characterized by gel exclusion chromatography, elemental analysis, and electron, IR, and NMR spectroscopy. The presence of complex-forming ions is confirmed by FT-IR spectra in the far region. The formation of biligand polychelate complexes with an octahedral packing of the iron ion is observed. Phase transitions in the resulting coordination compounds are studied by differential scanning calorimetry and optical polarizing thermomicroscopy. The presence of several polymorphic crystalline modifications, as well as mesophases, is established. Mesomorphic properties are found for complexes with chloride and tetrafluoroborate anions.Keywordsiron(III) complexesSchiff basestructuremass spectrometrymesomorphism