Research output: Contribution to journal › Article › peer-review
Cr(pyrazine)2(OSO2CH3)2: A two-dimensional coordination polymer with an antiferromagnetic ground state. / Perlepe, Panagiota; Oyarzabal, Itziar; Pedersen, Kasper S. et al.
In: Polyhedron, Vol. 153, 01.10.2018, p. 248-253.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Cr(pyrazine)2(OSO2CH3)2: A two-dimensional coordination polymer with an antiferromagnetic ground state
AU - Perlepe, Panagiota
AU - Oyarzabal, Itziar
AU - Pedersen, Kasper S.
AU - Negrier, Philippe
AU - Mondieig, Denise
AU - Rouzières, Mathieu
AU - Hillard, Elizabeth A.
AU - Wilhelm, Fabrice
AU - Rogalev, Andrei
AU - Suturina, Elizaveta A.
AU - Mathonière, Corine
AU - Clérac, Rodolphe
N1 - Publisher Copyright: © 2018 Elsevier Ltd
PY - 2018/10/1
Y1 - 2018/10/1
N2 - A novel two-dimensional (2D) coordination polymer with the formula Cr(pyrazine)2(OSO2CH3)2 has been synthesized and characterized. Powder X-ray diffraction data reveal that this material, which crystalizes in the Pnnm orthorhombic space group, is composed of rectangular grid layers with octahedral CrN4O2 nodes bridged by pyrazine ligands. Since the redox-active pyrazine can be reduced in the presence of transition metals, X-ray absorption spectroscopy and quantum chemical calculations were used to confirm the +II oxidation state of the Cr center. Magnetic susceptibility measurements indicate the presence of antiferromagnetic interactions between the chromium(II) centers through the neutral pyrazine and suggest an antiferromagnetic ordered state below TN ≈ 10 K, which was confirmed by heat-capacity measurements.
AB - A novel two-dimensional (2D) coordination polymer with the formula Cr(pyrazine)2(OSO2CH3)2 has been synthesized and characterized. Powder X-ray diffraction data reveal that this material, which crystalizes in the Pnnm orthorhombic space group, is composed of rectangular grid layers with octahedral CrN4O2 nodes bridged by pyrazine ligands. Since the redox-active pyrazine can be reduced in the presence of transition metals, X-ray absorption spectroscopy and quantum chemical calculations were used to confirm the +II oxidation state of the Cr center. Magnetic susceptibility measurements indicate the presence of antiferromagnetic interactions between the chromium(II) centers through the neutral pyrazine and suggest an antiferromagnetic ordered state below TN ≈ 10 K, which was confirmed by heat-capacity measurements.
KW - Chromium
KW - Coordination chemistry
KW - Magnetic properties
KW - Pyrazine
KW - X-ray spectroscopy
KW - SPIN
KW - ZN(II) METHANESULFONATES
KW - CU(II)
KW - COMPLEXES
KW - PYRAZINE
KW - FRAMEWORKS
KW - PYZ
KW - QUANTUM MAGNETS
KW - MAGNETIC-PROPERTIES
KW - EXCHANGE
UR - http://www.scopus.com/inward/record.url?scp=85050855992&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2018.07.011
DO - 10.1016/j.poly.2018.07.011
M3 - Article
AN - SCOPUS:85050855992
VL - 153
SP - 248
EP - 253
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
ER -
ID: 16082375