Article (Scientific journals)
Interpenetrated (8,3)-c and (10,3)-b metal-organic frameworks based on {FeIII 3} and {FeIII 2CoII} pivalate spin clusters
Botezat, O.; Van Leusen, J.; Kravtsov, V. C. et al.
2014In Crystal Growth and Design, 14 (9), p. 4721-4728
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Keywords :
Chlorine compounds; Cobalt; Cobalt compounds; Crystalline materials; Ethylene; Topology; X ray diffraction; Coordination clusters; Inter-cluster exchange; Interpenetrated networks; Metal organic framework; Single-crystal X-ray diffraction studies; Solvothermal conditions; Ssbauer spectroscopies; Three-dimensional networks; Iron compounds
Abstract :
[en] Two new magnetic cluster-based 3D coordination polymers consisting of μ3-oxo-centered cationic homometallic [FeIII 3O(O2CCMe3)6]+ or neutral heterometallic [FeIII 2CoIIO(O 2CCMe3)6] coordination clusters bridged by different N,N′-donor ligands into three-dimensional networks of {[Fe 3O(O2CCMe3)6(4,4′-bpy) 1.5](OH)·0.75(CH2Cl2)·x(H 2O)}n (1, x ≤ 8) and {[Fe2CoO(O 2CCMe3)6(bpe)0.5(pyz)]}n (2) (where 4,4′-bpy = 4,4′-bipyridine; bpe = 1,2′-bis(4- pyridyl)ethylene; pyz = pyrazine) have been prepared under solvothermal conditions. Single-crystal X-ray diffraction studies reveal the existence of a 6-fold interpenetrated network with rare (8,3)-c (etc) topology for 1 and a 3-fold interpenetrated network with (10,3)-b (ths) topology for 2. The interpenetration effectively results in very low BET surface areas, and the compounds have to be regarded as nonporous. Magnetic studies of 1 and 2 point to both ferro- and antiferromagnetic intra- and intercluster exchange interactions between the isotropic FeIII and the strongly anisotropic Co II spin centers. 57Fe Mössbauer spectroscopy confirms the uniform ferric (+III) valence state in both 1 and 2, and low-temperature data for 1 point toward distinct hyperfine fields for the Fe sites. © 2014 American Chemical Society.
Disciplines :
Chemistry
Author, co-author :
Botezat, O.;  Institute of Applied Physics, Academy of Science of Moldova, Academiei 5, MD2028 Chisinau, Moldova, Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
Van Leusen, J.;  Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
Kravtsov, V. C.;  Institute of Applied Physics, Academy of Science of Moldova, Academiei 5, MD2028 Chisinau, Moldova
Filippova, I. G.;  Institute of Applied Physics, Academy of Science of Moldova, Academiei 5, MD2028 Chisinau, Moldova
Hauser, J.;  Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
Speldrich, M.;  Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
Hermann, Raphaël ;  Université de Liège > Département de chimie (sciences) > Département de chimie (sciences)
Krämer, K. W.;  Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
Liu, S.-X.;  Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
Decurtins, S.;  Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
Kögerler, P.;  Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany, Jülich-Aachen Research Alliance, Fundamentals for Future Information Technology (JARA-FIT), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
Baca, S. G.;  Institute of Applied Physics, Academy of Science of Moldova, Academiei 5, MD2028 Chisinau, Moldova, Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
Language :
English
Title :
Interpenetrated (8,3)-c and (10,3)-b metal-organic frameworks based on {FeIII 3} and {FeIII 2CoII} pivalate spin clusters
Publication date :
2014
Journal title :
Crystal Growth and Design
ISSN :
1528-7483
eISSN :
1528-7505
Publisher :
American Chemical Society
Volume :
14
Issue :
9
Pages :
4721-4728
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
SCOPES IZ73Z0_127925 and IZ73Z0_152404/1; POLYMAG, IIF contract no. 252984
Funders :
SNSF - Swiss National Science Foundation [CH]
UE - Union Européenne [BE]
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