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Synthesis, Crystal Structure, and Single‐Molecule Magnetic Properties of a Salen‐type Zn‐Dy‐Zn Complex
Author(s) -
Shan PengYu,
Li HongFeng,
Chen Peng,
Tian YongMei,
Sun WenBin,
Yan PengFei
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201400610
Subject(s) - crystallography , dodecahedron , chemistry , lanthanide , square antiprism , molecule , crystal structure , ligand (biochemistry) , single crystal , oxygen atom , ion , biochemistry , receptor , organic chemistry
A Salen‐type [Salen = N , N ′‐ethylene bis(salicylideneimine)] mononuclear lanthanide(III)‐based Zn‐Dy‐Zn complex [Dy(ZnL) 2 (CH 3 COO)Cl 2 ] · CH 2 Cl 2 ( 1 ) was prepared [H 2 L = N , N ′‐bis(3‐ethoxysalicylidene)phenylene‐1,2‐diamine]. Single‐crystal X‐ray diffraction analysis revealed that Dy III was sandwiched between the two ZnL moieties, which was coordinated by three outer OO2 atoms and four inner N2O2 atoms from two Salen‐type ligand, respectively, and an oxygen atom of acetic acid molecule completed the eight‐coordinate arrangement. The continuous‐shape‐measures (CShMs) analysis to the Dy III coordination polyhedron revealed that the coordination environment lies among the ideal spherical triangular dodecahedron ( D 2 d ) and square antiprism ( D 4 d ), respectively, but with relative large deviation parameters. The alternative current (ac) susceptibility measurements shown that it behaved as a field‐induced single‐molecule magnet with relaxation energy barrier U eff = 19 K and τ 0 = 1.5 × 10 –5 s.