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Indexed by:期刊论文

Date of Publication:2014-09-01

Journal:INORGANIC CHEMISTRY COMMUNICATIONS

Included Journals:SCIE

Volume:47

Page Number:155-158

ISSN No.:1387-7003

Key Words:Self-assembly; Cyanide; Schiff bases; Building block; Spin-canting; Single-molecule magnets

Abstract:A tetranuclear cluster and an alternating zigzag chain were synthesized via rational assembly of the same cyanometalate building blocks with different Mn(III) Schiff bases possessing varying proportions of sterically hindered groups causing steric hindrances. The tetranuclear cluster [(Tp*)Fe(CN)(3)](2)[Mn(salen)](2)center dot H2O [1; [(Tp*) Fe(CN)(3)](-) [Tp* = hydrotris(3,5-dimethylpyrazol-1-yl) borate], salen N,N'-ethylenebis(salicylideneiminato) dianion] was formed with Schiff bases possessing smaller steric hindrances, whereas the one-dimensional alternating zigzag chain {[(Tp*)Fe(CN)(3)Mn(salcyen)]center dot 2CH(3)OH center dot H2O}(n) [2; salcyen = N,N'-(1,2-cyclohexanediylethylene) bis(salicylideneiminato) dianion] was formed with Schiff bases possessing larger steric hindrances. Magnetic measurements revealed that 1 exhibits single-molecule-magnet behavior with dominant ferromagnetic interactions, whereas 2 exhibits spin-canting behavior with dominant antiferromagnetic interactions. (C) 2014 Elsevier B.V. All rights reserved.