0000000000408207
AUTHOR
Xian-he Bu
The Role of Order-Disorder Transitions in the Quest for Molecular Multiferroics: Structural and Magnetic Neutron Studies of a Mixed Valence Iron (II)-Iron (III) Formate Framework
Neutron diffraction studies have been carried out to shed light on the unprecedented order-disorder phase transition (ca. 155 K) observed in the mixed-valence iron(II)-iron(III) formate framework compound [NH 2(CH3)2]n[FeIIIFe II(HCOO)6]n. The crystal structure at 220 K was first determined from Laue diffraction data, then a second refinement at 175 K and the crystal structure determination in the low temperature phase at 45 K were done with data from the monochromatic high resolution single crystal diffractometer D19. The 45 K nuclear structure reveals that the phase transition is associated with the order-disorder of the dimethylammonium counterion that is weakly anchored in the cavities …
Magnetic behavior control in niccolite structural metal formate frameworks [NH2(CH3)2][Fe(III)M(II)(HCOO)6] (M = Fe, Mn, and Co) by varying the divalent metal ions.
By changing template cation but introducing trivalent iron ions in the known niccolite structural metal formate frameworks, three complexes formulated [NH(2)(CH(3))(2)][Fe(III)M(II)(HCOO)(6)] (M = Fe for 1, Mn for 2, and Co for 3) were synthesized and magnetically characterized. The variation in the compositions of the complexes leads to three different complexes: mixed-valent complex 1, heterometallic but with the same spin state complex 2, and heterometallic heterospin complex 3. The magnetic behaviors are closely related to the divalent metal ions used. Complex 1 exhibits negative magnetization assigned as Neel N-Type ferrimagnet, with an asymmetric magnetization reversal in the hysteres…
CCDC 238449: Experimental Crystal Structure Determination
Related Article: Ming-Liang Tong, M.Monfort, J.M.C.Juan, Xiao-Ming Chen, Xian-He Bu, M.Ohba, S.Kitagawa|2005|Chem.Commun.||233|doi:10.1039/b415431b
CCDC 816221: Experimental Crystal Structure Determination
Related Article: Jiong-Peng Zhao, Bo-Wen Hu, F.Lloret, Jun Tao, Qian Yang, Xiao-Feng Zhang, Xian-He Bu|2010|Inorg.Chem.|49|10390|doi:10.1021/ic1014863
CCDC 945084: Experimental Crystal Structure Determination
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 816222: Experimental Crystal Structure Determination
Related Article: Jiong-Peng Zhao, Bo-Wen Hu, F.Lloret, Jun Tao, Qian Yang, Xiao-Feng Zhang, Xian-He Bu|2010|Inorg.Chem.|49|10390|doi:10.1021/ic1014863
CCDC 945083: Experimental Crystal Structure Determination
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 945082: Experimental Crystal Structure Determination
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 816224: Experimental Crystal Structure Determination
Related Article: Jiong-Peng Zhao, Bo-Wen Hu, F.Lloret, Jun Tao, Qian Yang, Xiao-Feng Zhang, Xian-He Bu|2010|Inorg.Chem.|49|10390|doi:10.1021/ic1014863
CCDC 816223: Experimental Crystal Structure Determination
Related Article: Jiong-Peng Zhao, Bo-Wen Hu, F.Lloret, Jun Tao, Qian Yang, Xiao-Feng Zhang, Xian-He Bu|2010|Inorg.Chem.|49|10390|doi:10.1021/ic1014863