Mole-Ratio-Dependent Reversible Transformation between 2:2 and Cyclic 3:6 Silver(I) Complexes with an Argentivorous Molecule
journal contribution
posted on 2021-01-14, 17:20 authored by Huiyeong Ju, Tomoko Abe, Yukari Takahashi, Yumiko Tsuruoka, Akihiro Otsuka, Eunji Lee, Mari Ikeda, Shunsuke Kuwahara, Yoichi HabataA tetra-armed
cyclen (<b>L</b>) with two substituted 3,5-difluorobenzyl
and two substituted pyridine-4-yl methyl groups at the 1,4- and 7,10-positions
of the cyclen ring as side arms was synthesized. When <b>L</b> was reacted with 1 equiv of the silver(I), dimetallo[3.3]paracyclophane-like
2:2 cyclic dimer, [Ag<sub>2</sub>(<b>L</b>)<sub>2</sub>](PF<sub>6</sub>)<sub>2</sub>, was obtained. The reaction of <b>L</b> with 2 equiv of silver(I) gave a 3:6 cyclic trimer, [Ag<sub>6</sub>(<b>L</b>)<sub>3</sub>(CH<sub>3</sub>CN)<sub>3</sub>](OTf)<sub>6</sub>·3CH<sub>3</sub>CN. Furthermore, reversible complexation
between the 2:2 cyclic dimer and 3:6 cyclic trimer was confirmed by <sup>1</sup>H NMR and the CSI mass in the addition of silver(I) or the
[2.2.2]cryptand.
