科研之友
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摘要
A new rhombus-shaped tetranuclear dysprosium cluster, [DY4(mu(3)-OH)(2)L-6(tmhd)(4)].CH2Cl2.8CH(3)CN (1) (HL = 5-(4-fluorobenzylidene)-8-hydroxylquinoline; tmhd = 2,2,6,6-tetramethy1-3,5-heptanedione), has been synthesized and completely characterized. The X-ray structural analysis exhibit that compound 1 contains one Dy-4 center with rhombus-shaped arrangement, and each Dy(III) ion of 1 is located in a distorted bicapped trigonal prism coordination sphere. Magnetic properties measurements indicate that 1 shows slow magnetic relaxation with energy barrier of 69.29 K and tau(0) = 6.18 x 10(-8) s.
