Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-mössbauer studies on internal electron-exchange processes

Rolf W. Saalfrank; Andreas Scheurer; Uwe Reimann; Frank Hampel; Christian Trieflinger; Michael Büschel; Jörg Daub; Alfred X. Trautwein; Volker Schünemann; Veaceslav Coropceanu

doi:10.1002/chem.200500097

Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-mössbauer studies on internal electron-exchange processes

Rolf W. Saalfrank^*, Andreas Scheurer, Uwe Reimann, Frank Hampel, Christian Trieflinger, Michael Büschel, Jörg Daub, Alfred X. Trautwein, Volker Schünemann, Veaceslav Coropceanu

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Physik

12 Zitate (Scopus)

Abstract

In a one-pot reaction of N-(5-methylthiazole-2-yl)-thiazole-2-carboxamide HL² (3) with iron(II) acetate in air, the homotrinuclear heteroleptic mixed-valent oxo-centered iron cluster [Fe^IIFe₂ ^IIIO(L²)₃(OAc)₃] (4) was formed. Exchange of iron(II) in 4 by nickel(II) afforded the heteronuclear cluster [Ni^IIFe₂^IIIO(L²)₃(OAc) ₃] (6). To obtain crystals suitable for X-ray structure analyses, in 4 and 6, the OAc^- co-ligands were exchanged by OBz ligands to give [Fe^IIFe₂^IIIO(L²)₃(OBz) ₃] (5) and [Ni^IIFe₂^IIIO(L ²)₃(OBz)₃] (7). The complexes 5 and 7 are isostructural and made up of three ditopic, tridentate ligands (L ²)^- and three bridging benzoate co-ligands, which fix the three metal ions in the corners of a triangle with an μ₃-O ^2- ion in the center. The mixed-valent character of 4-7, their intramolecular electron-exchange processes, and their redox properties were studied by variable-temperature Mössbauer spectroscopy and cyclic voltammetry.

Originalsprache	Englisch
Zeitschrift	Chemistry - A European Journal
Jahrgang	11
Ausgabenummer	20
Seiten (von - bis)	5843-5848
Seitenumfang	6
ISSN	0947-6539
DOIs	https://doi.org/10.1002/chem.200500097
Publikationsstatus	Veröffentlicht - 07.10.2005

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Saalfrank, R. W., Scheurer, A., Reimann, U., Hampel, F., Trieflinger, C., Büschel, M., Daub, J., Trautwein, A. X., Schünemann, V., & Coropceanu, V. (2005). Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-mössbauer studies on internal electron-exchange processes. Chemistry - A European Journal, 11(20), 5843-5848. https://doi.org/10.1002/chem.200500097

@article{c733a05539ad4eb5ae9fb104ae65c4be,

title = "Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-m{\"o}ssbauer studies on internal electron-exchange processes",

abstract = "In a one-pot reaction of N-(5-methylthiazole-2-yl)-thiazole-2-carboxamide HL2 (3) with iron(II) acetate in air, the homotrinuclear heteroleptic mixed-valent oxo-centered iron cluster [FeIIFe2 IIIO(L2)3(OAc)3] (4) was formed. Exchange of iron(II) in 4 by nickel(II) afforded the heteronuclear cluster [NiIIFe2IIIO(L2)3(OAc) 3] (6). To obtain crystals suitable for X-ray structure analyses, in 4 and 6, the OAc- co-ligands were exchanged by OBz ligands to give [FeIIFe2IIIO(L2)3(OBz) 3] (5) and [NiIIFe2IIIO(L 2)3(OBz)3] (7). The complexes 5 and 7 are isostructural and made up of three ditopic, tridentate ligands (L 2)- and three bridging benzoate co-ligands, which fix the three metal ions in the corners of a triangle with an μ3-O 2- ion in the center. The mixed-valent character of 4-7, their intramolecular electron-exchange processes, and their redox properties were studied by variable-temperature M{\"o}ssbauer spectroscopy and cyclic voltammetry.",

author = "Saalfrank, \{Rolf W.\} and Andreas Scheurer and Uwe Reimann and Frank Hampel and Christian Trieflinger and Michael B{\"u}schel and J{\"o}rg Daub and Trautwein, \{Alfred X.\} and Volker Sch{\"u}nemann and Veaceslav Coropceanu",

year = "2005",

month = oct,

day = "7",

doi = "10.1002/chem.200500097",

language = "English",

volume = "11",

pages = "5843--5848",

journal = "Chemistry - A European Journal",

issn = "0947-6539",

publisher = "John Wiley and Sons Inc",

number = "20",

}

Saalfrank, RW, Scheurer, A, Reimann, U, Hampel, F, Trieflinger, C, Büschel, M, Daub, J, Trautwein, AX, Schünemann, V & Coropceanu, V 2005, 'Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-mössbauer studies on internal electron-exchange processes', Chemistry - A European Journal, Jg. 11, Nr. 20, S. 5843-5848. https://doi.org/10.1002/chem.200500097

Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-mössbauer studies on internal electron-exchange processes. / Saalfrank, Rolf W.; Scheurer, Andreas; Reimann, Uwe et al.
in: Chemistry - A European Journal, Jahrgang 11, Nr. 20, 07.10.2005, S. 5843-5848.

Publikation: Beiträge in Fachzeitschriften › Zeitschriftenaufsätze › Forschung › Begutachtung

TY - JOUR

T1 - Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-mössbauer studies on internal electron-exchange processes

AU - Saalfrank, Rolf W.

AU - Scheurer, Andreas

AU - Reimann, Uwe

AU - Hampel, Frank

AU - Trieflinger, Christian

AU - Büschel, Michael

AU - Daub, Jörg

AU - Trautwein, Alfred X.

AU - Schünemann, Volker

AU - Coropceanu, Veaceslav

PY - 2005/10/7

Y1 - 2005/10/7

N2 - In a one-pot reaction of N-(5-methylthiazole-2-yl)-thiazole-2-carboxamide HL2 (3) with iron(II) acetate in air, the homotrinuclear heteroleptic mixed-valent oxo-centered iron cluster [FeIIFe2 IIIO(L2)3(OAc)3] (4) was formed. Exchange of iron(II) in 4 by nickel(II) afforded the heteronuclear cluster [NiIIFe2IIIO(L2)3(OAc) 3] (6). To obtain crystals suitable for X-ray structure analyses, in 4 and 6, the OAc- co-ligands were exchanged by OBz ligands to give [FeIIFe2IIIO(L2)3(OBz) 3] (5) and [NiIIFe2IIIO(L 2)3(OBz)3] (7). The complexes 5 and 7 are isostructural and made up of three ditopic, tridentate ligands (L 2)- and three bridging benzoate co-ligands, which fix the three metal ions in the corners of a triangle with an μ3-O 2- ion in the center. The mixed-valent character of 4-7, their intramolecular electron-exchange processes, and their redox properties were studied by variable-temperature Mössbauer spectroscopy and cyclic voltammetry.

AB - In a one-pot reaction of N-(5-methylthiazole-2-yl)-thiazole-2-carboxamide HL2 (3) with iron(II) acetate in air, the homotrinuclear heteroleptic mixed-valent oxo-centered iron cluster [FeIIFe2 IIIO(L2)3(OAc)3] (4) was formed. Exchange of iron(II) in 4 by nickel(II) afforded the heteronuclear cluster [NiIIFe2IIIO(L2)3(OAc) 3] (6). To obtain crystals suitable for X-ray structure analyses, in 4 and 6, the OAc- co-ligands were exchanged by OBz ligands to give [FeIIFe2IIIO(L2)3(OBz) 3] (5) and [NiIIFe2IIIO(L 2)3(OBz)3] (7). The complexes 5 and 7 are isostructural and made up of three ditopic, tridentate ligands (L 2)- and three bridging benzoate co-ligands, which fix the three metal ions in the corners of a triangle with an μ3-O 2- ion in the center. The mixed-valent character of 4-7, their intramolecular electron-exchange processes, and their redox properties were studied by variable-temperature Mössbauer spectroscopy and cyclic voltammetry.

UR - https://www.scopus.com/pages/publications/26844475093

U2 - 10.1002/chem.200500097

DO - 10.1002/chem.200500097

M3 - Journal articles

AN - SCOPUS:26844475093

SN - 0947-6539

VL - 11

SP - 5843

EP - 5848

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

IS - 20

ER -

Homo-/heterotrinuclear mixed-valent oxo-centered iron/nickel clusters-mössbauer studies on internal electron-exchange processes

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