Detail publikačního výsledku

A new series of Schiff base Ni(II)4 cubanes: Evaluation of magnetic coupling via carboxylate bridges.

GUSEV, A.; NEMEC, I.; HERCHEL, R.; BALUDA, Y.; MARIA, K.; YEFIMOV, N.; KISKIN, M.; LINERT, W.

Originální název

A new series of Schiff base Ni(II)4 cubanes: Evaluation of magnetic coupling via carboxylate bridges.

Anglický název

A new series of Schiff base Ni(II)4 cubanes: Evaluation of magnetic coupling via carboxylate bridges.

Druh

Článek WoS

Originální abstrakt

The Schiff base ligand H2L has been synthesized by condensation of 2-aminophenol with 3-methyl-1-phenyl-4-formylpyrazol-5-one and reaction between H2L and Ni(OOCR3)2, R = H in 1, –CH3 in 2, Cl in 3, yielded three new tetranuclear Ni(II) complexes. The complexes have been characterized by elemental analysis, IR- and ES-MS spectroscopy. Their structures as well as structure of ligand were determined by single-crystal X-ray diffraction. Compounds 1–3 possesses tetranuclear cubane-like structures containing [Ni4L4(R3COO)2]2− complex anions, which are charge balanced by two triethyl ammonium cations. Furthermore, the crystal structure of the Ni(II) cubane compound containing trichloroacetate bridging ligands, is reported for the first time. Variable temperature magnetic susceptibility measurements revealed interplay between ferromagnetic and antiferromagnetic exchange in the tetranuclear cubane-like compounds 1–3, in which ferromagnetic interactions were enhanced by introducing carboxylate bridging groups. DFT calculations supported the analysis of magnetic data.

Anglický abstrakt

The Schiff base ligand H2L has been synthesized by condensation of 2-aminophenol with 3-methyl-1-phenyl-4-formylpyrazol-5-one and reaction between H2L and Ni(OOCR3)2, R = H in 1, –CH3 in 2, Cl in 3, yielded three new tetranuclear Ni(II) complexes. The complexes have been characterized by elemental analysis, IR- and ES-MS spectroscopy. Their structures as well as structure of ligand were determined by single-crystal X-ray diffraction. Compounds 1–3 possesses tetranuclear cubane-like structures containing [Ni4L4(R3COO)2]2− complex anions, which are charge balanced by two triethyl ammonium cations. Furthermore, the crystal structure of the Ni(II) cubane compound containing trichloroacetate bridging ligands, is reported for the first time. Variable temperature magnetic susceptibility measurements revealed interplay between ferromagnetic and antiferromagnetic exchange in the tetranuclear cubane-like compounds 1–3, in which ferromagnetic interactions were enhanced by introducing carboxylate bridging groups. DFT calculations supported the analysis of magnetic data.

Klíčová slova

Ni(II) complex;Schiff base;Cubane-like structures;X-ray diffraction;Magnetic properties

Klíčová slova v angličtině

Ni(II) complex;Schiff base;Cubane-like structures;X-ray diffraction;Magnetic properties

Autoři

GUSEV, A.; NEMEC, I.; HERCHEL, R.; BALUDA, Y.; MARIA, K.; YEFIMOV, N.; KISKIN, M.; LINERT, W.

Rok RIV

2021

Vydáno

02.01.2021

Nakladatel

Elsevier

ISSN

0277-5387

Periodikum

POLYHEDRON

Svazek

196

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

8

Strany počet

8

URL

https://www.sciencedirect.com/science/article/pii/S0277538720306744

Plný text v Digitální knihovně

http://hdl.handle.net/11012/196369

BibTex

@article{BUT167751,
  author="Alexey {Gusev} and Ivan {Nemec} and Radovan {Herchel} and Yuriy {Baluda} and Kryukova {Maria} and Nikolay {Yefimov} and Mikhail {Kiskin} and Wolfgang {Linert}",
  title="A new series of Schiff base Ni(II)4 cubanes: Evaluation of magnetic coupling via carboxylate bridges.",
  journal="POLYHEDRON",
  year="2021",
  volume="196",
  number="1",
  pages="1--8",
  doi="10.1016/j.poly.2020.115017",
  issn="0277-5387",
  url="https://www.sciencedirect.com/science/article/pii/S0277538720306744"
}