Squaring the cube: a family of octametallic lanthanide complexes including a Dy8 single-molecule magnet. Academic Article uri icon

abstract

  • A series of isostructural octanuclear lanthanide complexes of general formula [Ln8(sao)4(3-OH)4(NO3)12(DMF)12] (Ln = Nd (), Sm (), Eu (), Gd (), Tb (), Dy (), Ho (), Er (); DMF = dimethylformamide) have been prepared via reactions of salicylaldoxime (saoH2), tetramethylammonium hydroxide (Me4NOH) with the appropriate lanthanide nitrate salt (Ln(NO3)36H2O). The metallic skeletons of the complexes describe [Ln4] tetrahedra encapsulated inside a [Ln4] square with the inner core stabilised through 3-OH(-) ions and the periphery by 4-sao(2-) ligands. The magnetic properties of compounds were investigated by dc and ac magnetometry. Temperature dependent ac magnetic susceptibility data reveal that the dysprosium analogue () displays an out-of-phase signal in the absence of an applied magnetic field indicative of slow relaxation of the magnetization typical of a Single-Molecule Magnet (SMM). Micro-SQUID measurements reveal temperature and sweep rate dependent hysteresis below 1.0 K.

published proceedings

  • Dalton Trans

altmetric score

  • 0.75

author list (cited authors)

  • Fang, M., Zhao, H., Prosvirin, A. V., Pinkowicz, D., Zhao, B., Cheng, P., ... Dunbar, K. R.

citation count

  • 42

complete list of authors

  • Fang, Ming||Zhao, Hanhua||Prosvirin, Andrey V||Pinkowicz, Dawid||Zhao, Bin||Cheng, Peng||Wernsdorfer, Wolfgang||Brechin, Euan K||Dunbar, Kim R

publication date

  • January 2013