Phosphonate Ligands Stabilize Mixed‐Valent {Mn III  20− x  Mn II   x  } Clusters with Large Spin and Coercivity | Zendy

Maheswaran Shanmugam | Zendy; Chastanet Guillaume | Zendy; Teat Simon J. | Zendy; Mallah Talal | Zendy; Sessoli Roberta | Zendy; Wernsdorfer Wolfgang | Zendy; Winpenny Richard E. P. | Zendy

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Phosphonate Ligands Stabilize Mixed‐Valent {Mn III 20− x Mn II x } Clusters with Large Spin and Coercivity

Author(s) -

Maheswaran Shanmugam,

Chastanet Guillaume,

Teat Simon J.,

Mallah Talal,

Sessoli Roberta,

Wernsdorfer Wolfgang,

Winpenny Richard E. P.

Publication year - 2005

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200501265

Subject(s) - crystallography , phosphonate , magnetization , manganese , coercivity , single molecule magnet , chemistry , ground state , coordination sphere , spin (aerodynamics) , condensed matter physics , materials science , physics , crystal structure , atomic physics , magnetic field , thermodynamics , organic chemistry , quantum mechanics

In a spin : The mixed‐valent {Mn III 20− x Mn II x } cage complexes ( x =2–6) have structures corresponding to a fragment of a cubic close‐packed lattice (see picture, Mn large sphere, O small sphere). Magnetic studies show for the cage with x =2 that the ground state has a spin ( S ) of 19±1 in low field, which increases to about S =30 at higher fields. The cage is a “single molecule magnet” with a high energy barrier (43 K) to reorientation of the magnetization.

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