期刊
INORGANIC CHEMISTRY
卷 56, 期 6, 页码 3349-3356出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.6b02883
关键词
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资金
- NSF [DMR-1420709]
- NSF GRFP
- U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory [DE-ACO2-06CH11357]
- Los Alamos National Laboratory Institutional Computing Program
- U.S. Department of Energy National Nuclear Security Administration [DE-AC5206NA25396]
A series of isoreticular metal organic frameworks (MOFs) of the formula M(BDC)(L) (M = Fe(II) or Co(II), BDC = 1,4-benzenedicarboxylate, L = pyrazine (pyz) or 4,4'-bipyridine (bipy)) has been synthesized and characterized by N-2 gas uptake Measurements, single crystal and powder X-ray diffraction, magnetometry, X-ray absorption spectroscopy, and Mossbauer spectroscopy. These studies indicate the formation of a permanently porous solid with high-spin Fe(II) and Co(II) centers that are weakly coupled, consistent with first-principles density functional theory calculations. This family of materials represents unusual examples of paramagnetic metal centers coordinated by linkers capable of mediating magnetic or electronic coupling in a porous framework. While only weak interactions are observed, the rigid 3D framework of the MOF dramatically impacts the properties of these materials when compared with close structural analogues.
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