Field-Induced Slow Magnetic Relaxation in CoII Cyclopropane-1,1-dicarboxylates

New CoII substituted malonate field-induced molecular magnets {[Rb6Co3(cpdc)6(H2O)12]∙6H2O}n (1) and [Cs2Co(cpdc)2(H2O)6]n (2) (where cpdc2− stands for cyclopropane-1,1-dicarboxylic acid dianions) were synthesized. Both compounds contain mononuclear bischelate fragments {CoII(cpdc)2(H2O)2}2− where t...

Full description

Saved in:
Bibliographic Details
Published inMolecules (Basel, Switzerland) Vol. 27; no. 19; p. 6537
Main Authors Matyukhina, Anna K., Zorina-Tikhonova, Ekaterina N., Goloveshkin, Alexander S., Babeshkin, Konstantin A., Efimov, Nikolay N., Kiskin, Mikhail A., Eremenko, Igor L.
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 03.10.2022
MDPI
Subjects
Acids
Anisotropy
CoII complexes
coordination polymers
cyclopropane-1,1-dicarboxylic acid
dicarboxylate
Geometry
Ligands
magnetic properties
single ion magnet
Online AccessGet full text

Cover

More Information
Summary:New CoII substituted malonate field-induced molecular magnets {[Rb6Co3(cpdc)6(H2O)12]∙6H2O}n (1) and [Cs2Co(cpdc)2(H2O)6]n (2) (where cpdc2− stands for cyclopropane-1,1-dicarboxylic acid dianions) were synthesized. Both compounds contain mononuclear bischelate fragments {CoII(cpdc)2(H2O)2}2− where the quasi-octahedral cobalt environment (CoO6) is complemented by water molecules in apical positions. The alkali metal atoms play the role of connectors between the bischelate fragments to form 3D and 2D polymeric structures for 1 and 2, respectively. Analysis of dc magnetic data using the parametric Griffith Hamiltonian for high-spin CoII supported by ab initio calculations revealed that both compounds have an easy axis of magnetic anisotropy. Compounds 1 and 2 exhibit slow magnetic relaxation under an external magnetic field (HDC = 1000 and 1500 Oe, respectively).
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules27196537