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Benzene‐Templated Hydrothermal Synthesis of Metal–Organic Frameworks with Selective Sorption Properties
Author(s) -
Choi EunYoung,
Park Kyungsoo,
Yang CheolMin,
Kim Hyejin,
Son JungHo,
Lee Soon W.,
Lee Young Hee,
Min Dongwon,
Kwon YoungUk
Publication year - 2004
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200400178
Subject(s) - benzene , cyclohexane , metal organic framework , molecule , chemistry , adsorption , naphthalene , cyclohexene , sorption , toluene , hydrothermal circulation , crystallinity , hydrothermal synthesis , inorganic chemistry , organic chemistry , crystallography , catalysis , chemical engineering , engineering
Abstract In this paper, we report two metal–organic frameworks [Co 3 (ndc) 3 (bipyen) 1.5 ] ⋅ H 2 O ( 1 ) and [Co 2 (ndc) 2 (bipyen)] ⋅ C 6 H 6 ⋅ H 2 O ( 2 ) (bipyen= trans ‐1,2‐bis(4‐pyridyl)ethylene, H 2 ndc=2,6‐naphthalenedicarboxylic acid). These compounds were both synthesized from identical hydrothermal reaction conditions except that benzene was added to the reaction for 2 . Crystal structures show that the two compounds have triply interpenetrated three‐dimensional frameworks and these frameworks have the same primary structure of a two‐dimensional network of interconnected [Co 2 (O 2 CR) 4/2 ] (R=naphthalene group) paddle‐wheels and bridging bipyen ligands. Both compounds have guest water molecules and, in addition, 2 has guest benzene molecules. Structural transformations of the host accompanied guest removal, which can be monitored by powder X‐ray diffraction. N 2 adsorption data of 2 show that there are two different types of pores corresponding to the benzene and water pores. Upon exposure to vapors of several organic molecules, the heat‐treated sample of 2 adsorbs benzene and cyclohexene, but does not adsorb toluene, ( o ‐, m ‐, and p ‐)xylenes, cycloheptatriene, or cyclohexane.