Synthesis and study of a trinuclear complex of iron(III) with cyanoacetic acid

Shova Sergiu; Kadelnik I.; Zhovmir F.; Bulgak I.; Belskii Vitalii; Turta Constantin

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SHOVA, Sergiu, KADELNIK, I., ZHOVMIR, F., BULGAK, I., BELSKII, Vitalii, TURTA, Constantin. Synthesis and study of a trinuclear complex of iron(III) with cyanoacetic acid. In: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 1997, vol. 23, pp. 629-635. ISSN -.

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Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya

Volumul 23 / 1997 / ISSN - /ISSNe 1070-3284

Synthesis and study of a trinuclear complex of iron(III) with cyanoacetic acid

Pag. 629-635

Shova Sergiu¹, Kadelnik I.¹, Zhovmir F.², Bulgak I.², Belskii Vitalii³, Turta Constantin²

¹ Institute of Applied Physics, Academy of Sciences of Moldova,
² Institute of Chemistry of the Academy of Sciences of Moldova,
³ Karpov Institute of Physics and Chemistry, Moscow

Disponibil în IBN: 5 septembrie 2023

Rezumat

The hitherto unknown trinuclear iron(III)-cyanoacetic acid complex of the composition [Fe₃O(CNCH₂COO)₆(H₂O) ₃]NO₃·5H₂O was studied by X-ray diffraction analysis. The crystals are orthorhombic and have the following unit cell parameters: a - 25.373(5), b - 15.148(3), c - 18.292(4) Å, Z=8, space group Pbca. The crystal structure is composed of the trinuclear [Fe₃O(CNCH₂COO)₆(H₂O) ₃]⁺ cations, NO₃^- anions, and molecules of water of crystallization. The compound was studied by Mössbauer and IR spectroscopy, thermogravimetry, and magnetochemistry. The complex contains high-spin Fe³⁺ ions coupled to one another by an exchange interaction of the antiferromagnetic type. A comparative analysis of the Mössbauer parameters indicates that the electric field gradient in the vicinity of the Mössbauer nucleus depends on the nature of the R group in the RCH₂ radical of the carboxylate ion

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<dc:creator>Şova, S.G.</dc:creator>
<dc:creator>Cadelnic, I.</dc:creator>
<dc:creator>Jovmir, T.C.</dc:creator>
<dc:creator>Bulgak, I.I.</dc:creator>
<dc:creator>Belskii, V.K.</dc:creator>
<dc:creator>Turtă, C.I.</dc:creator>
<dc:date>1997-09-09</dc:date>
<dc:description xml:lang='en'><p>The hitherto unknown trinuclear iron(III)-cyanoacetic acid complex of the composition [Fe<sub>3</sub>O(CNCH<sub>2</sub>COO)<sub>6</sub>(H<sub>2</sub>O)&nbsp;<sub>3</sub>]NO<sub>3</sub>&middot;5H<sub>2</sub>O was studied by X-ray diffraction analysis. The crystals are orthorhombic and have the following unit cell parameters: a - 25.373(5), b - 15.148(3), c - 18.292(4) &Aring;, Z=8, space group Pbca. The crystal structure is composed of the trinuclear [Fe<sub>3</sub>O(CNCH<sub>2</sub>COO)<sub>6</sub>(H<sub>2</sub>O)&nbsp;<sub>3</sub>]<sup>+</sup>&nbsp;cations, NO<sub>3</sub><sup>-</sup>&nbsp;anions, and molecules of water of crystallization. The compound was studied by M&ouml;ssbauer and IR spectroscopy, thermogravimetry, and magnetochemistry. The complex contains high-spin Fe<sup>3+</sup>&nbsp;ions coupled to one another by an exchange interaction of the antiferromagnetic type. A comparative analysis of the M&ouml;ssbauer parameters indicates that the electric field gradient in the vicinity of the M&ouml;ssbauer nucleus depends on the nature of the R group in the RCH<sub>2</sub>&nbsp;radical of the carboxylate ion</p></dc:description>
<dc:source>Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya  () 629-635</dc:source>
<dc:title>Synthesis and study of a trinuclear complex of iron(III) with cyanoacetic acid</dc:title>
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