Magnetic properties and exchange couplings of one-dimensionally arrayed 4f-3d heterometallic [Ln2Cu2]n compounds

Atsushi Okazawa, Ryo Watanabe, Hiroyuki Nojiri, Takashi Nogami, Takayuki Ishida

研究成果: Article査読

18 被引用数 (Scopus)

抄録

Heterometallic polymeric coordination compounds [{Ln(hfac)2(CH3OH)}2{Cu(dmg)(Hdmg)}2]n ([Ln2Cu2]n; Ln = Tb, Ho, and Er; H2dmg = dimethylglyoxime; Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione) were synthesized, and the X-ray crystallographic analysis shows that their structures are isomorphous to those of the known ferrimagnetic [Gd2Cu2]n and [Dy2Cu2]n analogs. The exchange couplings in [Tb2Cu2]n, [Ho2Cu2]n, and [Er2Cu2]n were precisely evaluated by high-frequency EPR and pulsed-field magnetization studies, giving JTb-Cu/kB = -0.77(2) K, JHo-Cu/kB = -0.250(12) K and JEr-Cu/kB = -0.149(15) K. They were comparable to those of the Gd and Dy analogs. The absolute value of the exchange coupling parameter monotonically decreases in the order of Gd, Tb, Dy, Ho, and Er.

本文言語English
ページ(範囲)1808-1813
ページ数6
ジャーナルPolyhedron
28
9-10
DOI
出版ステータスPublished - 2009 6 22

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 無機化学
  • 材料化学

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