Abstract
Single-molecule magnets involving monometallic 4f complexes have been investigated extensively in last two decades to understand the factors that govern the slow magnetization relaxation behavior in these complexes and to establish a magneto-structural correlation. The prime goal in this direction is to suppress the temperature independent quantum tunneling of magnetization (QTM) effect via fine-tuning the coordination geometry/microenvironment. Among the various coordination geometries that have been pursued, complexes containing high coordination number around Ln(III) are sparse. Herein, we present a summary of the various synthetic strategies that were used for the assembly of 10- and 12-coordinated Ln(III) complexes. The magnetic properties of such complexes are also described.
Highlights
In practice the effect of coordination geometry on the magnetic anisotropy for Dy(III) an extensive (III) ions have a very rich coordination number variation tha calculation was chemistry carried out bywith
This study revealed that a maximum effective around the lanthanide ions is greater than 9
In this article we have tried to summarize the status on high-coordinate lanthanide
Summary
Except lanthanide(SIMs) ions areor deeply buried and not interact strongly with an external ligand field.Gd(III) which is Even in their complexes, lanthanide ions can possess large spin-orbit coupling due to the(angular momencompletely isotropic, and Eu(III) which has a non-magnetic ground state unquenched orbital angular momentum and these systems can be good candidates forof SMMs. Again tum quantum number J = 0), are potential candidates in the assembly molecular magnets. B is the crystal field (CF) coefficient and C(i) represents a oneodd k values are responsible for various spectroscopic transitions These parameters can electron operator acting on ith electron.
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