Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

2. 1. 2021

Publisher

Elsevier

ISBN

0277-5387

Periodical

POLYHEDRON

Year of study

196

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

8

Pages count

8

URL

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

Full text in the Digital Library

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"
}