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Four‐Site Cooperative Spin Crossover in a Mononuclear Fe II Complex
Author(s) -
Lennartson Anders,
Bond Andrew D.,
Piligkos Stergios,
McKenzie Christine J.
Publication year - 2012
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.201204207
Subject(s) - spin crossover , crossover , crystal structure , set (abstract data type) , crystallography , chemistry , coordination complex , spin (aerodynamics) , physics , stereochemistry , combinatorics , computer science , mathematics , thermodynamics , organic chemistry , artificial intelligence , metal , programming language
Round and round : A mononuclear Fe II  complex (see picture) with an N 4 S 2 coordination set has been characterized in four polymorphic forms. Two of the polymorphs display four‐site cooperative spin crossover (SCO), shown conclusively by the crystal structure of a fully ordered 1:3 high‐spin/low‐spin state. The presence of S donor atoms in SCO‐active compounds is unusual, and further investigation of Fe II  complexes for SCO activity is warranted.

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