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Highly-connected, porous coordination polymers based on [M4(μ3-OH)2] (M = CoII and NiII) clusters: different networks, adsorption and magnetic properties
- Source :
- Dalton Transactions. 41:4199
- Publication Year :
- 2012
- Publisher :
- Royal Society of Chemistry (RSC), 2012.
-
Abstract
- Two new 3D coordination polymers based on tetranuclear clusters, {[Co(4)(ina)(5)(μ(3)-OH)(2)(H(2)O)(EtOH)]-NO(3)·2EtOH·4H(2)O}(n) (1) (Hina = isonicotinic acid) and {[Ni(4)(ina)(5)(μ(3)-OH)(2)(EtCOO)]·6EtOH·2H(2)O}(n) (2), were obtained by the solvothermal reactions from Hina and different metal salts. The [M(4)(μ(3)-OH)(2)] cores act as 7- and 9-connected nodes and are extended through ina linkers to highly-connected frameworks with vmr net for 1 and bct-9-P2(1)/c net for 2. Both the desolvated frameworks display effective gas sorption capacities of N(2) and H(2) with Langmuir surface areas of 546 and 917 m(2) g(-1) for 1 and 2, respectively. Magnetic studies show spin canting and spin-glass behaviours with T(g) = 6.0 and 15.0 K for 1 and 2, respectively. The intra- and inter-tetramer coupling interactions and cooperative magnetic correlation greatly influence the bulk magnetic behaviours in this system.
- Subjects :
- chemistry.chemical_classification
Langmuir
Polymers
Stereochemistry
Porous Coordination Polymers
Sorption
Cobalt
Polymer
Crystallography, X-Ray
Coupling (probability)
Isonicotinic acid
Inorganic Chemistry
Magnetics
Crystallography
chemistry.chemical_compound
Adsorption
X-Ray Diffraction
chemistry
Nickel
Spectroscopy, Fourier Transform Infrared
Porosity
Powder Diffraction
Spin canting
Subjects
Details
- ISSN :
- 14779234 and 14779226
- Volume :
- 41
- Database :
- OpenAIRE
- Journal :
- Dalton Transactions
- Accession number :
- edsair.doi.dedup.....d44384c1487c29c641cbf1aebb77f3d0