TY - JOUR
T1 - Iron(III) complexes with 2-pyridyl oxime ligands
T2 - Synthesis, structural and spectroscopic characterization, and magnetic studies
AU - Tzani, Sofia
AU - Lazarou, Katerina N.
AU - Stoumpos, Constantinos C.
AU - Pissas, Michael
AU - Psycharis, Vassilis
AU - Sanakis, Yiannis
AU - Raptopoulou, Catherine P.
N1 - Funding Information:
This project is implemented under the “ARISTEIA” Action of the “OPERATIONAL PROGRAMME EDUCATION AND LIFELONG LEARNING” and is co-funded by the European Social Fund (ESF) and National Resources.
Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2016/2
Y1 - 2016/2
N2 - Reactions of FeIII sources with 2-pyridyl oxime ligands, pyC(R)NOH (R=H, Me, Ph), afforded the trinuclear oxo-centered complexes (NH4)[Fe3O(LH)6(H2O)3](ClO4)8 ⋅MeOH⋅1.14H2O (1⋅ MeOH⋅1.14H2O) and [Fe3O{pyC(H)NO)(PhCO2)6(H2O)]⋅MeCN (2⋅MeCN), the tetranuclear complex [Fe4(OH)4{pyC(Me)NO}4(H2O)4] (ClO4)4⋅3Me2CO⋅H2O (3⋅3Me2CO⋅H2O), and the hexanuclear complexes [Fe6(OH)6{pyC(Me)NO}6(H2O)6](ClO4)6⋅8Me2CO⋅2H2O (4⋅8Me2CO⋅2H2O), [Fe6(OH)6{pyC(Me)NO}6(MeCONH2)6](ClO4)6⋅2MeCN⋅H2O (5⋅2MeCN⋅H2O), [Fe6(OH)6 {pyC(Ph)NO}6(H2O)6](ClO4)6⋅4.4Me2CO ⋅1.6Et2O (6⋅4.4Me2CO ⋅1.6Et2O) and [Fe6(OH)6{pyC(Ph)NO}6(MeOH)6](ClO4)5.5(OH)0.5⋅MeOH⋅0.5H2O (7⋅MeOH ⋅0.5H2O), where LH is the zwitterion anionic form of 2-pyridinecarboxylic acid (picolinic acid). Complex 3 can be described as inverse 12-metallacrown-4, whereas 4–7 can be described as inverse 18-metallacrowns-6 and represent the first examples of iron(III) metallacyclic clusters with pyC(R)NOH (R=H, Me, Ph) ligands. Complexes 3 and 6 were characterized by Mössbauer spectroscopy and magnetic susceptibility measurements, while complex 2 was characterized by EPR spectroscopy.
AB - Reactions of FeIII sources with 2-pyridyl oxime ligands, pyC(R)NOH (R=H, Me, Ph), afforded the trinuclear oxo-centered complexes (NH4)[Fe3O(LH)6(H2O)3](ClO4)8 ⋅MeOH⋅1.14H2O (1⋅ MeOH⋅1.14H2O) and [Fe3O{pyC(H)NO)(PhCO2)6(H2O)]⋅MeCN (2⋅MeCN), the tetranuclear complex [Fe4(OH)4{pyC(Me)NO}4(H2O)4] (ClO4)4⋅3Me2CO⋅H2O (3⋅3Me2CO⋅H2O), and the hexanuclear complexes [Fe6(OH)6{pyC(Me)NO}6(H2O)6](ClO4)6⋅8Me2CO⋅2H2O (4⋅8Me2CO⋅2H2O), [Fe6(OH)6{pyC(Me)NO}6(MeCONH2)6](ClO4)6⋅2MeCN⋅H2O (5⋅2MeCN⋅H2O), [Fe6(OH)6 {pyC(Ph)NO}6(H2O)6](ClO4)6⋅4.4Me2CO ⋅1.6Et2O (6⋅4.4Me2CO ⋅1.6Et2O) and [Fe6(OH)6{pyC(Ph)NO}6(MeOH)6](ClO4)5.5(OH)0.5⋅MeOH⋅0.5H2O (7⋅MeOH ⋅0.5H2O), where LH is the zwitterion anionic form of 2-pyridinecarboxylic acid (picolinic acid). Complex 3 can be described as inverse 12-metallacrown-4, whereas 4–7 can be described as inverse 18-metallacrowns-6 and represent the first examples of iron(III) metallacyclic clusters with pyC(R)NOH (R=H, Me, Ph) ligands. Complexes 3 and 6 were characterized by Mössbauer spectroscopy and magnetic susceptibility measurements, while complex 2 was characterized by EPR spectroscopy.
KW - 2-pyridyl oxime ligands
KW - Crystal structures
KW - Iron(III) complexes
KW - Magnetic studies
KW - Mössbauer spectroscopy
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U2 - 10.1002/slct.201600037
DO - 10.1002/slct.201600037
M3 - Article
AN - SCOPUS:85014587151
SN - 2365-6549
VL - 1
SP - 147
EP - 156
JO - ChemistrySelect
JF - ChemistrySelect
IS - 2
ER -