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An Extremely Porous Hydrogen‐Bonded Framework Composed of d ‐Penicillaminato Co III 2 Au I 3 Complex Anions and Aqua Cobalt(II) Cations: Formation and Stepwise Structural Transformation
Author(s) -
Surinwong Sireenart,
Yoshinari Nobuto,
Yotnoi Bunlawee,
Konno Takumi
Publication year - 2016
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201501352
Subject(s) - cobalt , carboxylate , crystallography , chemistry , hydrogen , molecule , adsorption , porosity , inorganic chemistry , stereochemistry , organic chemistry
Abstract A unique example of a hydrogen‐bonded ionic solid with a porosity of 80 %, [Co(H 2 O) 6 ] 3 [Co 2 Au 3 ( d ‐pen‐ N , S ) 6 ] 2 ( 1 ; d ‐H 2 pen= d ‐penicillamine), composed of [Co(H 2 O) 6 ] 2+ cations and [Co 2 Au 3 ( 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(H 2 O) 4 ][Co(H 2 O) 6 ] 2 [Co 2 Au 3 ( d ‐pen‐ N , S ) 6 ] 2 ( 2 ) and [Co(H 2 O) 4 ] 3 [Co 2 Au 3 ( d ‐pen‐ N , S ) 6 ] 2 ( 3 ), through the coordination of the free carboxylate groups in [Co 2 Au 3 ( d ‐pen‐ N , S ) 6 ] 3− to Co II centers. Solids 1 – 3 were structurally characterized, and the selective adsorption of small molecules into their pores was investigated.