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Title: Microporous materials constructed from the interpenetrated coordination networks. Structures and methane adsorption properties

Abstract

Five new coordination compounds with 4,4{prime}-azopyridine (azpy) have been synthesized and structurally characterized. The reaction of Mn(NO{sub 3}){sub 2}{center_dot}6H{sub 2}O with azpy in ethanol/acetone affords 1{center_dot}2EtOH, whose network consists of one-dimensional chains of [Mn(azpy)(H{sub 2}O){sub 2}]{sub n}. The chains are associated by hydrogen bonding to provide a logcabin-type three-dimensional structure, which creates about 8 x 8 {angstrom} of channels, filled with ethanol molecules. The treatment of Co(NO{sub 3}){center_dot}6H{sub 2}O and Co(NCS){sub 2}{center_dot}4H{sub 2}O with azpy produces 2{center_dot}Me{sub 2}CO{center_dot}3H{sub 2}O and 3{center_dot}0.5ETOH, respectively, which have a brick-wall and a rhombus-type two-dimensional networks. The reaction of Cd(NO{sub 3}){sub 2}{center_dot}4H{sub 2}O with azpy affords 4{center_dot}azpy from the ethanol/H{sub 2}O media, while the reaction in the ethanol/acetone media provides 5{center_dot}2Me{sub 2}CO. 4{center_dot}azpy and 5{center_dot}2Me{sub 2}CO form a square-grid- and a herringbone-type two-dimensional networks, respectively. The two-dimensional sheets of 4{center_dot}azpy stack without interpenetration, leading to large size of channels, which are filled with free azpy molecules. The two-dimensional networks of 2{center_dot}Me{sub 2}CO{center_dot}3H{sub 2}O, 3{center_dot}0.5EtOH, and 5{center_dot}2Me{sub 2}CO are quadruply, doubly, and triply interpenetrated, respectively. Despite the interpenetration, their networks create the microporous channels filled with guest solvent molecules. The dried compounds 2, 3, and 5 adsorb methane between 1 and 36 atm at 25 C,more » in which 3 and 5 exhibit Langmuir-type isotherms. The inherent micropore volumes for 3 and 5 are 0.685 and 3.30 mmol/g, respectively. XRPD measurements under reduced pressure at 100 C reveal that the channel structure of 3 is the most stable in these compounds; the observed XRPD pattern is in good agreement with that of the simulated pattern of the single-crystal model. Compounds 2 and 5 also retain the porous structures, however, their pore structures are distorted upon loss of guest included molecules.« less

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Kyoto Univ., Yoshida, Sakyo (JP)
OSTI Identifier:
20080264
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 12; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PYRIDINES; POROUS MATERIALS; MOLECULAR STRUCTURE; METHANE; SORPTIVE PROPERTIES

Citation Formats

Kondo, Mitsuru, Shimamura, Mariko, Noro, Shinichiro, Minakoshi, Seika, Asami, Akiko, Seki, Kenji, and Kitagawa, Susumu. Microporous materials constructed from the interpenetrated coordination networks. Structures and methane adsorption properties. United States: N. p., 2000. Web. doi:10.1021/cm990612m.
Kondo, Mitsuru, Shimamura, Mariko, Noro, Shinichiro, Minakoshi, Seika, Asami, Akiko, Seki, Kenji, & Kitagawa, Susumu. Microporous materials constructed from the interpenetrated coordination networks. Structures and methane adsorption properties. United States. doi:10.1021/cm990612m.
Kondo, Mitsuru, Shimamura, Mariko, Noro, Shinichiro, Minakoshi, Seika, Asami, Akiko, Seki, Kenji, and Kitagawa, Susumu. Mon . "Microporous materials constructed from the interpenetrated coordination networks. Structures and methane adsorption properties". United States. doi:10.1021/cm990612m.
@article{osti_20080264,
title = {Microporous materials constructed from the interpenetrated coordination networks. Structures and methane adsorption properties},
author = {Kondo, Mitsuru and Shimamura, Mariko and Noro, Shinichiro and Minakoshi, Seika and Asami, Akiko and Seki, Kenji and Kitagawa, Susumu},
abstractNote = {Five new coordination compounds with 4,4{prime}-azopyridine (azpy) have been synthesized and structurally characterized. The reaction of Mn(NO{sub 3}){sub 2}{center_dot}6H{sub 2}O with azpy in ethanol/acetone affords 1{center_dot}2EtOH, whose network consists of one-dimensional chains of [Mn(azpy)(H{sub 2}O){sub 2}]{sub n}. The chains are associated by hydrogen bonding to provide a logcabin-type three-dimensional structure, which creates about 8 x 8 {angstrom} of channels, filled with ethanol molecules. The treatment of Co(NO{sub 3}){center_dot}6H{sub 2}O and Co(NCS){sub 2}{center_dot}4H{sub 2}O with azpy produces 2{center_dot}Me{sub 2}CO{center_dot}3H{sub 2}O and 3{center_dot}0.5ETOH, respectively, which have a brick-wall and a rhombus-type two-dimensional networks. The reaction of Cd(NO{sub 3}){sub 2}{center_dot}4H{sub 2}O with azpy affords 4{center_dot}azpy from the ethanol/H{sub 2}O media, while the reaction in the ethanol/acetone media provides 5{center_dot}2Me{sub 2}CO. 4{center_dot}azpy and 5{center_dot}2Me{sub 2}CO form a square-grid- and a herringbone-type two-dimensional networks, respectively. The two-dimensional sheets of 4{center_dot}azpy stack without interpenetration, leading to large size of channels, which are filled with free azpy molecules. The two-dimensional networks of 2{center_dot}Me{sub 2}CO{center_dot}3H{sub 2}O, 3{center_dot}0.5EtOH, and 5{center_dot}2Me{sub 2}CO are quadruply, doubly, and triply interpenetrated, respectively. Despite the interpenetration, their networks create the microporous channels filled with guest solvent molecules. The dried compounds 2, 3, and 5 adsorb methane between 1 and 36 atm at 25 C, in which 3 and 5 exhibit Langmuir-type isotherms. The inherent micropore volumes for 3 and 5 are 0.685 and 3.30 mmol/g, respectively. XRPD measurements under reduced pressure at 100 C reveal that the channel structure of 3 is the most stable in these compounds; the observed XRPD pattern is in good agreement with that of the simulated pattern of the single-crystal model. Compounds 2 and 5 also retain the porous structures, however, their pore structures are distorted upon loss of guest included molecules.},
doi = {10.1021/cm990612m},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 5,
volume = 12,
place = {United States},
year = {2000},
month = {5}
}