A purely lanthanide-based complex exhibiting ferromagnetic coupling and slow magnetic relaxation behavior.
Two lanthanide-organic frameworks, {Ln(TDA)(1.5)(H(2)O)(2)}(n) [TDA = thiophene-2,5-dicarboxylic acid anion; Ln = Gd (1), Dy (2)], were structurally and magnetically characterized. The magnetic studies revealed that the ferromagnetic coupling existed between adjacent lanthanide ions in 1 and 2, and only 2 displays slow magnetic relaxation behavior with tau(0) = 2.4 x 10(-8) s and DeltaE/k(B) = 44.2 K. To our knowledge, it is rather rare that ferromagnetic coupling and slow magnetic relaxation coexist in three-dimensional lanthanide-based frameworks.
Chen
Zhi
Z
Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
Zhao
Bin
B
Cheng
Peng
P
Zhao
Xiao-Qing
XQ
Shi
Wei
W
Song
You
Y
D003998:Dicarboxylic Acids / Q000737:chemistry*; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D013696:Temperature; D013876:Thiophenes / Q000737:chemistry*
D003998:Dicarboxylic Acids; D028581:Lanthanoid Series Elements; D009942:Organometallic Compounds; D013876:Thiophenes