Coordination Networks of a Ditopic Macrocycle Exhibiting Anion-Controlled Dimensional Changes and Crystal-to-Crystal Anion Exchange

Eunji Lee; Ki-Min Park; Mari Ikeda; Shunsuke Kuwahara; Yoichi Habata; Shim Sung Lee

doi:10.1021/acs.inorgchem.5b00422

Coordination Networks of a Ditopic Macrocycle Exhibiting Anion-Controlled Dimensional Changes and Crystal-to-Crystal Anion Exchange

Inorg Chem. 2015 Jun 1;54(11):5372-83. doi: 10.1021/acs.inorgchem.5b00422. Epub 2015 May 8.

Authors

Eunji Lee¹, Ki-Min Park¹, Mari Ikeda², Shunsuke Kuwahara, Yoichi Habata, Shim Sung Lee¹

Affiliations

¹ †Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, South Korea.
² ‡Education Center, Faculty of Engineering, Chiba Institute of Technology, 2-1-1 Shibazono, Narashino, Chiba 275-0023, Japan.

PMID: 25952980
DOI: 10.1021/acs.inorgchem.5b00422

Abstract

A rationally designed NO2S2-donor macrocycle L was synthesized, and anion variation (PF6(-), CF3CO2(-), NO3(-), and CF3SO3(-)) of its silver(I) complexes was employed as a strategy for controlling their coordination modes and network dimensions. The assembly reactions of L with four silver(I) salts afforded the complexes [Ag2L2](PF6)2 (1), [Ag4L2(CF3CO2)4]n (2), [Ag4L2(NO3)4]n (3), and {[Ag3L2(CF3SO3)2]CF3SO3}n (4) that adopt cyclic dimer, 1D, 2D, and pseudo 3D network structures, respectively, with the structure adopted depending on the coordination ability and coordination modes of the anion used. Interestingly, quantitative anion exchange accompanying an irreversible structural conversion from 2, 3, or 4 to 1 was observed in the crystalline state by powder X-ray diffraction (PXRD) and IR spectroscopy. A stepwise mechanistic process from 2 (CF3CO2(-), 1D) to 3 (NO3(-), 2D) by anion exchange was also proposed.