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A Mixed Porphyrin–Schiff Base Dysprosium(III) Single‐Molecule Magnet
Author(s) -
Ma Qi,
Zeng Suyuan,
Feng Xuenan,
Cao Wei,
Wang Hailong,
Dou Jianmin,
Jiang Jianzhuang
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201600527
Subject(s) - dysprosium , chemistry , schiff base , acetylacetone , homoleptic , porphyrin , crystallography , ligand (biochemistry) , molecule , single molecule magnet , metal , stereochemistry , inorganic chemistry , photochemistry , magnetization , organic chemistry , biochemistry , physics , receptor , quantum mechanics , magnetic field
The mixed porphyrin–Schiff base potassium dysprosium(III) complex [K(TBPP)Dy(L)(CH 3 CN) 2 ] [H 2 TBPP = 5,10,15,20‐tetrakis(4‐ tert ‐butylphenyl)porphyrin; H 2 L = N , N′ ‐bis(3‐methoxysalicylidene)benzene‐1,2‐diamine; 1 ] was isolated from the reaction between the metal‐free Schiff base ligand H 2 L and the half‐sandwich porphyrinato dysprosium compound [Dy(TBPP)(acac)] (Hacac = acetylacetone) in the presence of KOH. A sandwich‐type double‐decker structure has been unambiguously revealed by single‐crystal X‐ray diffraction analysis. Static and dynamic magnetic measurements disclosed the slow relaxation behavior of this new double‐decker compound and indicated its single‐molecule magnet (SMM) nature. Comparative studies on the magnetic properties of 1 , the homoleptic bis[5,10,15,20‐tetrakis(4‐ tert ‐butylphenyl)porphyrinato]dysprosium double‐decker [DyH(TBPP) 2 ] ( 2 ), and the bis(Schiff base)dysprosium double‐decker {[Dy[Zn(L)Cl] 2 (DMF) 2 ] · Cl} ( 3 , DMF = N , N ‐dimethylformamide) indicate the effect of the ligand field (LF), through the deviation of the dysprosium coordination geometry from the ideal D 4 d form, on the SMM properties of 1 – 3 in addition to the effect of the charge distribution over the Dy III ion.