120th General Meeting of the KCS

Type Poster Presentation
Area Inorganic Chemistry
Room No. Exhibition Hall 2+3
Time 10월 19일 (목요일) 11:00~12:30
Code INOR.P-2
Subject Crystal structure of inorganic-organic hybrid perovskite type (C6H5CH2CH2NH3)2ZnCl4 by X-ray single crystal diffraction: Comparison with (C6H5CH2CH2NH3)2CoCl4 and (C6H5CH2CH2NH3)2ZnBr4
Authors Garam Park, In-Hwan Oh1,*, J. M. Sungil Park1, Chang Seop Hong
Department of Chemistry, Korea University, Korea
1Korea Atomic Energy Research Institute, Korea
Abstract As a part of the interest in the low-dimensional magnetism, we synthesized a series of inorganic-organic hybrid perovskite type materials whose general chemical formula is (C6H5CH2CH2NH3)2MeX4 where Me = divalent metal and X = halides [1, 2]. Depending on the type of the transition metals, each crystal shows completely different crystal systems and magnetic behavior. For example, Co-PEA crystallized in P21/c and shows no magnetic transition and in the crystal structure, Co2+ cation builds an isolated tetrahedron with four Cl- anions [1]. Contrary to Co-compound, Mn- and Cu-PEA crystallized in the same space group Pbca and each transition metal is surrounded by six Cl- anions. However, Mn-PEA shows an antiferromagnetic phase transition at 43K and Cu-PEA has a Curie temperature at 10K [2, 3]. Zn-PEA belongs to the monoclinic space group P21/c with a = 7.455Å, b = 24.67Å, c = 11.203Å and β= 91.71°. These values are very similar to Co-PEA (P21/c with a = 7.462Å, b = 24.664Å, c = 11.997Å and β= 91.76°) and also Zn-bormide (C6H5CH2CH2NH3)2ZnBr4 system (P21/c with a = 7.67Å, b = 25.53Å, c = 11.14Å and β= 91.40°) [1, 4]. In this work, we will compare Zn-chloride system with Co-chloride and Zn-bromide systems from a crystal structural point of view.

Reference
[1] I. H. Oh et al., Acta Cryst. E, 67 (2011) m522.
[2] S. H. Park et al., Dalton Trans., 41 (2012) 1237.
[3] A. O. Polyakov et al., Chem. Mater., 24 (2012) 133.
[4] Y. D. Huh et al., CAP, 6 (2006) 219.
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