An Extremely Porous Hydrogen‐Bonded Framework Composed of d‐Penicillaminato CoIII2AuI3 Complex Anions and Aqua Cobalt(II) Cations: Formation and Stepwise Structural Transformation |
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| Authors: | Sireenart Surinwong Dr. Nobuto Yoshinari Dr. Bunlawee Yotnoi Prof. Takumi Konno |
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| Affiliation: | 1. Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka, Japan;2. Department of Chemistry, School of Science, University of Phayao, Phayao, Thailand |
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| Abstract: | A unique example of a hydrogen‐bonded ionic solid with a porosity of 80 %, [Co(H2O)6]3[Co2Au3(d ‐pen‐N,S)6]2 ( 1 ; d ‐H2pen=d ‐penicillamine), composed of [Co(H2O)6]2+ cations and [Co2Au3(d ‐pen‐N,S)6]3? anions, is reported. Solid 1 was kinetically produced and was then transformed stepwise into two more thermodynamically stable solids with lower porosities, [Co(H2O)4][Co(H2O)6]2[Co2Au3(d ‐pen‐N,S)6]2 ( 2 ) and [Co(H2O)4]3[Co2Au3(d ‐pen‐N,S)6]2 ( 3 ), through the coordination of the free carboxylate groups in [Co2Au3(d ‐pen‐N,S)6]3? to CoII centers. Solids 1 – 3 were structurally characterized, and the selective adsorption of small molecules into their pores was investigated. |
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| Keywords: | adsorption ionic solids porous compounds structural transformation X-ray diffraction |
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