Synthesis, magnetochemistry, and spectroscopy of heterometallic trinuclear basic trifluoroacetates [Fe2M(μ3-O)(CF3COO)6 (H2O)3]·H2O (M = Mn, Co, Ni)

Konstantin S. Gavrilenko, A. Vértes, G. Vankó, L. Kiss, Anthony W. Addison, Thomas Weyhermüller, Vitaly V. Pavlishchuk

Research output: Contribution to journalArticle

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Abstract

Three new μ3-oxo(trifluoroacetato) complexes [Fe2 IIIMnII3-O) (CF3COO)6(H2O)3]· H2O = Mn (1), Co (2), Ni (3)] have been prepared. Compounds 1 and 2 crystallize in the monoclinic space groups C2/c [a = 22.002(5), b = 13.647(3), c = 24.767(4) Å, β = 98.23(3)°] and C2/m [a 21.426(4), b = 15.100(2), c = 14.815(3) Å β = 117.99(2)°], respectively. The coordination spheres of the metal ions are essentially octahedral, with the Fe-O distances [1.870(5) Å] falling in the usual range for these systems. Magnetochemical studies reveal the presence of antiferromagnetic exchange in the isosceles triangular skeletons of the polynuclear species. Application of the isotropic spin Hamiltonian H = -2JFeM[SFe1SM + SMSFe2] - 2JFeFe[SFe1SFe2] gives the fitting parameters: gFe = gMn = 2.00, JFe-Fe = -56.50(7) and JFe-Mn = -16.23(4) cm-1 (1), gmol = 2.09(1), JFe-Fe = -42.8(3.5) cm-1, JFe-Co = -17.8(1.4) cm-1 (2) and gFe = 2.00, gNi = 2.215(2), JFe-Fe = -45.60(1) and JFe-Ni = -16.96(2) cm-1 (3). A Mössbauer investigation confirms that no electron transfer from MnII or CoII to FeIII occurs during the syntheses of these complexes.

Original languageEnglish
Pages (from-to)3347-3355
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Issue number12
Publication statusPublished - Dec 1 2002

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Hamiltonians
Trifluoroacetic Acid
Metal ions
Spectroscopy
Electrons

Keywords

  • Carboxylate ligands
  • Cobalt
  • Heterometallic complexes
  • Iron
  • Magnetic properties
  • Manganese
  • Nickel
  • Trinuclear complexes

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

Synthesis, magnetochemistry, and spectroscopy of heterometallic trinuclear basic trifluoroacetates [Fe2M(μ3-O)(CF3COO)6 (H2O)3]·H2O (M = Mn, Co, Ni). / Gavrilenko, Konstantin S.; Vértes, A.; Vankó, G.; Kiss, L.; Addison, Anthony W.; Weyhermüller, Thomas; Pavlishchuk, Vitaly V.

In: European Journal of Inorganic Chemistry, No. 12, 01.12.2002, p. 3347-3355.

Research output: Contribution to journalArticle

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title = "Synthesis, magnetochemistry, and spectroscopy of heterometallic trinuclear basic trifluoroacetates [Fe2M(μ3-O)(CF3COO)6 (H2O)3]·H2O (M = Mn, Co, Ni)",
abstract = "Three new μ3-oxo(trifluoroacetato) complexes [Fe2 IIIMnII(μ3-O) (CF3COO)6(H2O)3]· H2O = Mn (1), Co (2), Ni (3)] have been prepared. Compounds 1 and 2 crystallize in the monoclinic space groups C2/c [a = 22.002(5), b = 13.647(3), c = 24.767(4) {\AA}, β = 98.23(3)°] and C2/m [a 21.426(4), b = 15.100(2), c = 14.815(3) {\AA} β = 117.99(2)°], respectively. The coordination spheres of the metal ions are essentially octahedral, with the Fe-O distances [1.870(5) {\AA}] falling in the usual range for these systems. Magnetochemical studies reveal the presence of antiferromagnetic exchange in the isosceles triangular skeletons of the polynuclear species. Application of the isotropic spin Hamiltonian H = -2JFeM[SFe1SM + SMSFe2] - 2JFeFe[SFe1SFe2] gives the fitting parameters: gFe = gMn = 2.00, JFe-Fe = -56.50(7) and JFe-Mn = -16.23(4) cm-1 (1), gmol = 2.09(1), JFe-Fe = -42.8(3.5) cm-1, JFe-Co = -17.8(1.4) cm-1 (2) and gFe = 2.00, gNi = 2.215(2), JFe-Fe = -45.60(1) and JFe-Ni = -16.96(2) cm-1 (3). A M{\"o}ssbauer investigation confirms that no electron transfer from MnII or CoII to FeIII occurs during the syntheses of these complexes.",
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T1 - Synthesis, magnetochemistry, and spectroscopy of heterometallic trinuclear basic trifluoroacetates [Fe2M(μ3-O)(CF3COO)6 (H2O)3]·H2O (M = Mn, Co, Ni)

AU - Gavrilenko, Konstantin S.

AU - Vértes, A.

AU - Vankó, G.

AU - Kiss, L.

AU - Addison, Anthony W.

AU - Weyhermüller, Thomas

AU - Pavlishchuk, Vitaly V.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - Three new μ3-oxo(trifluoroacetato) complexes [Fe2 IIIMnII(μ3-O) (CF3COO)6(H2O)3]· H2O = Mn (1), Co (2), Ni (3)] have been prepared. Compounds 1 and 2 crystallize in the monoclinic space groups C2/c [a = 22.002(5), b = 13.647(3), c = 24.767(4) Å, β = 98.23(3)°] and C2/m [a 21.426(4), b = 15.100(2), c = 14.815(3) Å β = 117.99(2)°], respectively. The coordination spheres of the metal ions are essentially octahedral, with the Fe-O distances [1.870(5) Å] falling in the usual range for these systems. Magnetochemical studies reveal the presence of antiferromagnetic exchange in the isosceles triangular skeletons of the polynuclear species. Application of the isotropic spin Hamiltonian H = -2JFeM[SFe1SM + SMSFe2] - 2JFeFe[SFe1SFe2] gives the fitting parameters: gFe = gMn = 2.00, JFe-Fe = -56.50(7) and JFe-Mn = -16.23(4) cm-1 (1), gmol = 2.09(1), JFe-Fe = -42.8(3.5) cm-1, JFe-Co = -17.8(1.4) cm-1 (2) and gFe = 2.00, gNi = 2.215(2), JFe-Fe = -45.60(1) and JFe-Ni = -16.96(2) cm-1 (3). A Mössbauer investigation confirms that no electron transfer from MnII or CoII to FeIII occurs during the syntheses of these complexes.

AB - Three new μ3-oxo(trifluoroacetato) complexes [Fe2 IIIMnII(μ3-O) (CF3COO)6(H2O)3]· H2O = Mn (1), Co (2), Ni (3)] have been prepared. Compounds 1 and 2 crystallize in the monoclinic space groups C2/c [a = 22.002(5), b = 13.647(3), c = 24.767(4) Å, β = 98.23(3)°] and C2/m [a 21.426(4), b = 15.100(2), c = 14.815(3) Å β = 117.99(2)°], respectively. The coordination spheres of the metal ions are essentially octahedral, with the Fe-O distances [1.870(5) Å] falling in the usual range for these systems. Magnetochemical studies reveal the presence of antiferromagnetic exchange in the isosceles triangular skeletons of the polynuclear species. Application of the isotropic spin Hamiltonian H = -2JFeM[SFe1SM + SMSFe2] - 2JFeFe[SFe1SFe2] gives the fitting parameters: gFe = gMn = 2.00, JFe-Fe = -56.50(7) and JFe-Mn = -16.23(4) cm-1 (1), gmol = 2.09(1), JFe-Fe = -42.8(3.5) cm-1, JFe-Co = -17.8(1.4) cm-1 (2) and gFe = 2.00, gNi = 2.215(2), JFe-Fe = -45.60(1) and JFe-Ni = -16.96(2) cm-1 (3). A Mössbauer investigation confirms that no electron transfer from MnII or CoII to FeIII occurs during the syntheses of these complexes.

KW - Carboxylate ligands

KW - Cobalt

KW - Heterometallic complexes

KW - Iron

KW - Magnetic properties

KW - Manganese

KW - Nickel

KW - Trinuclear complexes

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