Mn(III) complexes with asymmetrical N2O3 Schiff bases. The unusual crystal structure of [Mn(phenglydisal-3-Br,5-Cl)(dmso)] (H3phenglydisal = 3-aza-N-{2-[1-aza-2-(2-hydroxyphenyl)vinyl]phenyl}-4-(2-hydroxyphenyl)but-3-enamide), a mononuclear single-stranded helical manganese(III) complex

Olga L. Hoyos; Manuel R. Bermejo; Matilde Fondo; Ana García-Deibe; Ana M. González; Marcelino Maneiro; Rosa Pedrido

doi:10.1039/B005021K

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Mn(III) complexes with asymmetrical N₂O₃Schiff bases. The unusual crystal structure of [Mn(phenglydisal-3-Br,5-Cl)(dmso)] (H₃phenglydisal = 3-aza-N-{2-[1-aza-2-(2-hydroxyphenyl)vinyl]phenyl}-4-(2-hydroxyphenyl)but-3-enamide), a mononuclear single-stranded helical manganese(III) complex

Olga L. Hoyos,^a Manuel R. Bermejo,*^b Matilde Fondo,^b Ana García-Deibe,^b Ana M. González,^b Marcelino Maneiro^b and Rosa Pedrido^b

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* Corresponding authors

^a Departamento de Química, Universidad del Cauca, Popayán, Colombia

^b Departamento de Química Inorgánica, Facultade de Química, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
E-mail: qimb45@uscmail.usc.es

Abstract

Neutral manganese(III) complexes, with potentially pentadentate and trianionic asymmetrical Schiff bases, containing a hard amido donor atom, have been synthesised. Complexes are found to be of the form Mn^III(phenglydisal-R)(H₂O)_n (n = 1–4) [H₃phenglydisal = 3-aza-N-{2-[1-aza-2-(2-hydroxyphenyl)vinyl]phenyl}-4-(2-hydroxyphenyl)but-3-enamide; R = H; 3-OEt, 4,6-(OMe)₂, 5-NO₂, 3-OMe, 5-Br, 3-Br,5-Cl] and have been characterised by elemental analyses, FAB mass spectrometry, IR and ¹H NMR spectroscopies, magnetic measurements, molar conductivities and cyclic voltammetry. [Mn(phenglydisal-3-Br,5-Cl)(dmso)] 3, was also crystallographically characterised and its crystal structure shows the manganese atom in an octahedral environment, with the ligand giving rise to a mononuclear single-stranded helical complex.

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Article information

DOI: https://doi.org/10.1039/B005021K
Article type: Paper
Submitted: 22 Jun 2000
Accepted: 02 Aug 2000
First published: 29 Aug 2000

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J. Chem. Soc., Dalton Trans., 2000, 3122-3127

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Mn(III) complexes with asymmetrical N₂O₃ Schiff bases. The unusual crystal structure of [Mn(phenglydisal-3-Br,5-Cl)(dmso)] (H₃phenglydisal = 3-aza-N-{2-[1-aza-2-(2-hydroxyphenyl)vinyl]phenyl}-4-(2-hydroxyphenyl)but-3-enamide), a mononuclear single-stranded helical manganese(III) complex

O. L. Hoyos, M. R. Bermejo, M. Fondo, A. García-Deibe, A. M. González, M. Maneiro and R. Pedrido, J. Chem. Soc., Dalton Trans., 2000, 3122 DOI: 10.1039/B005021K

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Journal of the Chemical Society, Dalton Transactions