A Microporous Co2+ Metal Organic Framework with Single-Crystal to Single-Crystal Transformation Properties and High CO2 Uptake

Scientific publication - Journal Article uoadl:2928288 42 Read counter

Unit:
Department of Chemistry
Title:
A Microporous Co2+ Metal Organic Framework with Single-Crystal to
Single-Crystal Transformation Properties and High CO2 Uptake
Languages of Item:
English
Abstract:
The synthesis and characterization of [Co-9(INA)(18)(H2O)(6)]center
dot 11DMF center dot 15H(2)O(8) (Co-9-INA center dot 11DMF center dot
15H(2)O) (INA(-) = the anion of isonicotinic acid) is reported. It
exhibits a rigid 3D-porous structure with a Co-9 repeating unit
consisting of four [Co-2(II)(mu-O2CR)(2)(mu-H2O)] subunits (two
unique) linked through bridging INA(-) ligands to an isolated Co-II ion
(half unique). The [Co-2(II)] dimers and the isolated Co-II ion have
assembled to create a trinodal (6,7,8)-coordinated network with point
symbol
(3(2).4(11).5(6).6(2))(2)(3(2).4(18).5(4).6(4))(2)(3(4).4(4).5(4).6(3)).
Gas sorption studies revealed that Co-9-INA exhibits 910 m(2) g(-1) BET
area, 4.2 mmol g(-1) CO2 uptake at 273 K/1 bar, and 6.7 CO2/CH4
selectivity at zero coverage. Furthermore, Co-9-INA displays capability
for exchange of the guest solvent molecules by various organic molecules
in a single-crystal to single-crystal fashion. Direct and alternating
current magnetic susceptibility studies revealed the existence of
dominant antiferromagnetic interactions between the Co2+ ions that
result in a paramagnetic ST = 3/2 spin ground state value. Overall, this
work emphasizes the potential of relatively simple and inexpensive
polytopic ligands, such as isonicotic acid, to stabilize microporous
MOFs with significant CO2 sorption capacity.
Publication year:
2015
Authors:
Eleni E. Moushi
Andreas Kourtellaris
Ioannis Spanopoulos
Manolis J. Manos
Giannis S. Papaefstathiou
Pantelis N. Trikalitis
Anastasios J. Tasiopoulos
Journal:
Crystal Growth & Design
Publisher:
American Chemical Society (ACS)
Volume:
15
Number:
1
Pages:
185--193
Keywords:
metal-organic frameworks
Main subject category:
Science
Official URL (Publisher):
DOI:
10.1021/cg501141m
The digital material of the item is not available.