Kinetically stable Ln III complexes comprising a trinuclear core sandwiched between two thiacalix[4]arene ligands self-assembled in water (Ln III = Nd III, Yb III)

Nobuhiko Iki, Shouichi Hiro-Oka, Mami Nakamura, Teppei Tanaka, Hitoshi Hoshino

研究成果: Article

12 引用 (Scopus)

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In aqueous solutions, thiacalixarene (TCAS) and Ln III (= Nd III, Yb III) self-assembled over a long period of time (1 d) to form 3:2 complexes Ln III 3·TCAS 2 in which the Ln III 3 core is sandwiched between two TCAS ligands, which results in a high kinetic stability. This was not expected from the exo-coordination fashion of TCAS with the O,S,O donors found in the 1:1 complex Ln III·TCAS, and thus this feature was attributed to the multiple bonds between the Ln III 3 core and TCAS. Our observations open an exciting possibility of designing kinetically stable Ln III complexes by using exo-type ligands as scaffolds to sandwich a multi-Ln III core rather than endo-type ones to encapsulate a Ln III core. Lanthanides(III) (Ln = Nd, Yb) and thiacalix[4]arene (TCAS) self-assembled in water to form Ln 3·TCAS 2, over a period of 1 d. The high kinetic stability of Ln 3·TCAS 2 revealed by HPLC was unexpected from the tridentate coordination fashion of TCAS in Ln·TCAS. This suggests a new way to design kinetically stable complexes through the formation of clusters.

元の言語English
ページ(範囲)3541-3545
ページ数5
ジャーナルEuropean Journal of Inorganic Chemistry
発行部数22
DOI
出版物ステータスPublished - 2012 8 1

ASJC Scopus subject areas

  • Inorganic Chemistry

フィンガープリント Kinetically stable Ln <sup>III</sup> complexes comprising a trinuclear core sandwiched between two thiacalix[4]arene ligands self-assembled in water (Ln <sup>III</sup> = Nd <sup>III</sup>, Yb <sup>III</sup>)' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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