Dinuclear cobalt(III) and mixed valence trinuclear MnIII-MnII-MnIII complexes with a tripodal bridging pyridylaminophenol ligand

Ruben Davila, Nicolas Farias, E. Carolina Sañudo, Andrés Vega, Albert Escuer, Mónica Soler, Jorge Manzur

Resultado de la investigación: Article

5 Citas (Scopus)

Resumen

A dinuclear cobalt(ii), [Co24-O,O′,N,N′-L)2(μ-O,O′-HCOO)](ClO4)·(C2H5)2O (1) and a linear mixed valence trinuclear manganese, [Mn34-O,O′,N,N′-L)2(μ-CH3O)2(μ-O,O′-CH3COO)2]·2(C2H5)2O (2) complexes with the ligand N-(2-pyridyl-methyl)-N,N-bis-[2′-hydroxy-5′-methyl-benzyl]-amine (H2L) are reported. For both complexes the ligand is present in the deprotonated form. The coordination sphere of the cobalt centres can be described as slightly distorted octahedral with two bridging O-phenoxo, one N-pyridine, one N-amine, one terminal O-phenoxo and one bridging O-formate donor atoms. Interestingly, the bridging formate resulted from the aerial oxidation of methanol. The manganese complex (2) has a linear mixed valence MnIII-MnII-MnIII, with the MnII and MnIII centres bridged by alkoxo, carboxylate and phenoxo groups. Cyclic voltammetry studies show both metal and ligand centred redox processes consistent with the structure of the complexes. Complex (2) has an S = 3/2 ground state; magnetic susceptibility measurements indicate a weak antiferromagnetic interaction. The best fit of the magnetic susceptibility data as a function of temperature was obtained using a conventional trinuclear linear model [H = -2J(S1S2 + S1S3)] with J = -0.79 cm-1 and g = 1.99.

Idioma originalEnglish
Páginas (desde-hasta)6164-6170
Número de páginas7
PublicaciónNew Journal of Chemistry
Volumen40
N.º7
DOI
EstadoPublished - 1 ene 2016

Huella dactilar

formic acid
Cobalt
Ligands
Manganese
Magnetic susceptibility
Amines
Pyridine
Ground state
Cyclic voltammetry
Methanol
Metals
Antennas
Atoms
Oxidation
Temperature

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry

Citar esto

Davila, Ruben ; Farias, Nicolas ; Carolina Sañudo, E. ; Vega, Andrés ; Escuer, Albert ; Soler, Mónica ; Manzur, Jorge. / Dinuclear cobalt(III) and mixed valence trinuclear MnIII-MnII-MnIII complexes with a tripodal bridging pyridylaminophenol ligand. En: New Journal of Chemistry. 2016 ; Vol. 40, N.º 7. pp. 6164-6170.
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title = "Dinuclear cobalt(III) and mixed valence trinuclear MnIII-MnII-MnIII complexes with a tripodal bridging pyridylaminophenol ligand",
abstract = "A dinuclear cobalt(ii), [Co2(κ4-O,O′,N,N′-L)2(μ-O,O′-HCOO)](ClO4)·(C2H5)2O (1) and a linear mixed valence trinuclear manganese, [Mn3(κ4-O,O′,N,N′-L)2(μ-CH3O)2(μ-O,O′-CH3COO)2]·2(C2H5)2O (2) complexes with the ligand N-(2-pyridyl-methyl)-N,N-bis-[2′-hydroxy-5′-methyl-benzyl]-amine (H2L) are reported. For both complexes the ligand is present in the deprotonated form. The coordination sphere of the cobalt centres can be described as slightly distorted octahedral with two bridging O-phenoxo, one N-pyridine, one N-amine, one terminal O-phenoxo and one bridging O-formate donor atoms. Interestingly, the bridging formate resulted from the aerial oxidation of methanol. The manganese complex (2) has a linear mixed valence MnIII-MnII-MnIII, with the MnII and MnIII centres bridged by alkoxo, carboxylate and phenoxo groups. Cyclic voltammetry studies show both metal and ligand centred redox processes consistent with the structure of the complexes. Complex (2) has an S = 3/2 ground state; magnetic susceptibility measurements indicate a weak antiferromagnetic interaction. The best fit of the magnetic susceptibility data as a function of temperature was obtained using a conventional trinuclear linear model [H = -2J(S1S2 + S1S3)] with J = -0.79 cm-1 and g = 1.99.",
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Dinuclear cobalt(III) and mixed valence trinuclear MnIII-MnII-MnIII complexes with a tripodal bridging pyridylaminophenol ligand. / Davila, Ruben; Farias, Nicolas; Carolina Sañudo, E.; Vega, Andrés; Escuer, Albert; Soler, Mónica; Manzur, Jorge.

En: New Journal of Chemistry, Vol. 40, N.º 7, 01.01.2016, p. 6164-6170.

Resultado de la investigación: Article

TY - JOUR

T1 - Dinuclear cobalt(III) and mixed valence trinuclear MnIII-MnII-MnIII complexes with a tripodal bridging pyridylaminophenol ligand

AU - Davila, Ruben

AU - Farias, Nicolas

AU - Carolina Sañudo, E.

AU - Vega, Andrés

AU - Escuer, Albert

AU - Soler, Mónica

AU - Manzur, Jorge

PY - 2016/1/1

Y1 - 2016/1/1

N2 - A dinuclear cobalt(ii), [Co2(κ4-O,O′,N,N′-L)2(μ-O,O′-HCOO)](ClO4)·(C2H5)2O (1) and a linear mixed valence trinuclear manganese, [Mn3(κ4-O,O′,N,N′-L)2(μ-CH3O)2(μ-O,O′-CH3COO)2]·2(C2H5)2O (2) complexes with the ligand N-(2-pyridyl-methyl)-N,N-bis-[2′-hydroxy-5′-methyl-benzyl]-amine (H2L) are reported. For both complexes the ligand is present in the deprotonated form. The coordination sphere of the cobalt centres can be described as slightly distorted octahedral with two bridging O-phenoxo, one N-pyridine, one N-amine, one terminal O-phenoxo and one bridging O-formate donor atoms. Interestingly, the bridging formate resulted from the aerial oxidation of methanol. The manganese complex (2) has a linear mixed valence MnIII-MnII-MnIII, with the MnII and MnIII centres bridged by alkoxo, carboxylate and phenoxo groups. Cyclic voltammetry studies show both metal and ligand centred redox processes consistent with the structure of the complexes. Complex (2) has an S = 3/2 ground state; magnetic susceptibility measurements indicate a weak antiferromagnetic interaction. The best fit of the magnetic susceptibility data as a function of temperature was obtained using a conventional trinuclear linear model [H = -2J(S1S2 + S1S3)] with J = -0.79 cm-1 and g = 1.99.

AB - A dinuclear cobalt(ii), [Co2(κ4-O,O′,N,N′-L)2(μ-O,O′-HCOO)](ClO4)·(C2H5)2O (1) and a linear mixed valence trinuclear manganese, [Mn3(κ4-O,O′,N,N′-L)2(μ-CH3O)2(μ-O,O′-CH3COO)2]·2(C2H5)2O (2) complexes with the ligand N-(2-pyridyl-methyl)-N,N-bis-[2′-hydroxy-5′-methyl-benzyl]-amine (H2L) are reported. For both complexes the ligand is present in the deprotonated form. The coordination sphere of the cobalt centres can be described as slightly distorted octahedral with two bridging O-phenoxo, one N-pyridine, one N-amine, one terminal O-phenoxo and one bridging O-formate donor atoms. Interestingly, the bridging formate resulted from the aerial oxidation of methanol. The manganese complex (2) has a linear mixed valence MnIII-MnII-MnIII, with the MnII and MnIII centres bridged by alkoxo, carboxylate and phenoxo groups. Cyclic voltammetry studies show both metal and ligand centred redox processes consistent with the structure of the complexes. Complex (2) has an S = 3/2 ground state; magnetic susceptibility measurements indicate a weak antiferromagnetic interaction. The best fit of the magnetic susceptibility data as a function of temperature was obtained using a conventional trinuclear linear model [H = -2J(S1S2 + S1S3)] with J = -0.79 cm-1 and g = 1.99.

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U2 - 10.1039/c5nj03670d

DO - 10.1039/c5nj03670d

M3 - Article

AN - SCOPUS:84978106451

VL - 40

SP - 6164

EP - 6170

JO - New Journal of Chemistry

JF - New Journal of Chemistry

SN - 1144-0546

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ER -