Synthesis, Crystal Structure and Thermal Behavior of a 3-D Barium(II)/Iron(III)-Oxalate Polymer

Noé Makon Ma Houga, Brian S. Dolinar, Justin Nenwa, Gouet Bebga

2124 Chemistry Department, University of Wisconsin-Madison, Madison, USA.
Department of Chemistry, Higher Teacher Training College, University of Yaounde 1, Yaounde, Cameroon.
Department of Inorganic Chemistry, University of Yaounde 1, Yaounde, Cameroon.

DOI: 10.4236/ojic.2014.42004                

Abstract

Reaction of Ba(NO₃)₂ with Fe(NO₃)_3·9H₂O and H₂C₂O_4·2H₂O in aqueous medium readily affords, in high yield, the bimetallic complex polymer of chemical composition {Ba₆(H₂O)₁₇[Fe(C₂O₄)₃]₄}·7H₂O (1), consistent with the expected ratio of 3Ba^II vs. 2Fe^III. Compound 1 was fully characterized by elemental and thermal analyses, vibrational FTIR spectroscopy, and by single crystal X-ray structure determination. The bulk structure of 1 is a 3-D metal-organic framework held together by intermetallic linkages across oxalate and aqua oxygen bridgings. Thermal analyses of 1 show significant weight losses corresponding to water molecules (lattice and coordinated), followed by the decomposition of the network.

Keywords

Tris(Oxalato)Ferrate(III) Anion, Bimetallic Complex Polymer, Crystal Structure, Thermal Stability

Conflicts of Interest

The authors declare no conflicts of interest.

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