Field-Induced Single Molecule Magnetic Behavior of Mononuclear Cobalt(II) Schiff Base Complex Derived from 5-Bromo Vanillin

Fikre Elemo; Sören Schlittenhardt; Taju Sani; Cyril Rajnák; Wolfgang Linert; Roman Boča; Madhu Thomas; Mario Ruben

doi:10.3390/inorganics10080105

Inorganics (Jul 2022)

Field-Induced Single Molecule Magnetic Behavior of Mononuclear Cobalt(II) Schiff Base Complex Derived from 5-Bromo Vanillin

Fikre Elemo,
Sören Schlittenhardt,
Taju Sani,
Cyril Rajnák,
Wolfgang Linert,
Roman Boča,
Madhu Thomas,
Mario Ruben

Affiliations

Fikre Elemo: Department of Industrial Chemistry, College of Applied Science, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
Sören Schlittenhardt: Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
Taju Sani: Department of Industrial Chemistry, College of Applied Science, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
Cyril Rajnák: Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, Slovakia
Wolfgang Linert: Institute of Applied Physics, Vienna University of Technology, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria
Roman Boča: Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, Slovakia
Madhu Thomas: Department of Industrial Chemistry, College of Applied Science, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
Mario Ruben: Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany

DOI: https://doi.org/10.3390/inorganics10080105
Journal volume & issue: Vol. 10, no. 8
p. 105

Abstract

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A mononuclear Co(II) complex of a Schiff base ligand derived from 5-Bromo-vanillin and 4-aminoantipyrine, that has a compressed tetragonal bipyramidal geometry and exhibiting field-induced slow magnetic relaxation, has been synthesized and characterized by single crystal X-ray diffraction, elemental analysis and molecular spectroscopy. In the crystal packing, a hydrogen-bonded dimer structural topology has been observed with two distinct metal centers having slightly different bond parameters. The complex has been further investigated for its magnetic nature on a SQUID magnetometer. The DC magnetic data confirm that the complex behaves as a typical S = 3/2 spin system with a sizable axial zero-field splitting parameter D/hc = 38 cm−1. The AC susceptibility data reveal that the relaxation time for the single-mode relaxation process is τ = 0.16(1) ms at T = 2.0 K and BDC = 0.12 T.

Published in Inorganics

ISSN: 2304-6740 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Inorganic chemistry
Website: http://www.mdpi.com/journal/Inorganics

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