A Mixed Valence Co II Co III 2 Field-Supported Single Molecule Magnet: Solvent-Dependent Structural Variation

One-pot reaction of the Schiff base , '-ethylene bis(salicylaldimine) (H L), CoCl .6H O, and [Ph SnCl ] in acetone produces the mixed valence Co Co compound [Co Co (μ-L) (Ph) (μ-Cl) ]·(CH ) CO·H O ( ). Our recent study already revealed that the same reaction mixtures in methanol or ethanol prod...

Full description

Saved in:
Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2021-02, Vol.26 (4)
Main Authors: Hazra, Susanta, Rajnák, Cyril, Titiš, Ján, Guedes da Silva, M Fátima C, Boča, Roman, Pombeiro, Armando J L
Format: Article
Language:English
Subjects:
Cobalt - chemistry
Crystallography, X-Ray
Electricity
Magnetic Fields
Magnets - chemistry
Molecular Conformation
Rotation
Solvents - chemistry
Temperature
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:One-pot reaction of the Schiff base , '-ethylene bis(salicylaldimine) (H L), CoCl .6H O, and [Ph SnCl ] in acetone produces the mixed valence Co Co compound [Co Co (μ-L) (Ph) (μ-Cl) ]·(CH ) CO·H O ( ). Our recent study already revealed that the same reaction mixtures in methanol or ethanol produced a heterometallic Sn Co ( ) or monometallic Co complex ( ), respectively. Comparison of these organometallic systems shows that the 2,1-intermetallic Ph shift occurs in any of those solvents, but their relevant structural features (mononuclear, dinuclear-heterometallic, and trinuclear mixed valence) are solvent dependent. Geometrical structural rotation is also discussed among the related organometallic Co Co systems. The AC magnetic susceptibility measurements indicate that is a single molecule magnet (SMM), exhibiting a field-induced slow magnetic relaxation with two modes. The relaxation time for the low-frequency channel is as slow as ~0.6 s at = 2.0 K and = 1.0 T.
ISSN:1420-3049