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Synthesis, Crystal Structure and Magnetic Properties of Rb 2 Mn 3 O 4
Author(s) -
Nuss Jürgen,
Jansen Martin
Publication year - 2012
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201200452
Subject(s) - rubidium , stoichiometry , crystallography , magnetic susceptibility , crystal structure , crystal (programming language) , chemistry , materials science , tetrahedron , space group , inorganic chemistry , x ray crystallography , physics , potassium , diffraction , organic chemistry , computer science , programming language , optics
Rb 2 Mn 3 O 4 , which is the first rubidium oxomanganates(II), has been synthesized via the azide/nitrate route from a stoichiometric mixture of the precursors RbN 3 , RbNO 3 , and MnO, as well as from Rb 2 O and MnO, through an all solid state reaction. Its crystal structure ( C 2/ c , Z = 4, a = 1546.9(2) pm, b = 666.22(7) pm, c = 588.06(6) pm) consists of a 3D arrangement of edge‐ and corner‐sharing MnO 4 tetrahedra with rubidium filling the space between. Magnetic susceptibility measurements indicate a magnetic phase transition at 126 K. The magnetic response as a function of temperature is complex, indicating strong, partly frustrated magnetic exchange interactions.