A Chiral Three Dimensional Potassium(I)/Strontium(II)/Chromium(III) Oxalato-Bridged Coordination Polymer: Synthesis, Characterization and Thermal Analysis


A new compound of general formula {[(H2O)2K(μ-H2O)Sr]@[Cr(C2O4)3]}n (1) has been synthesized in water and characterized by elemental and thermal analyses, EDX, IR and UV-Vis spectroscopies and by single crystal X-ray structure determination. Compound 1 crystallizes in the chiral space group Fdd2 of orthorhombic system with a = 14.110 (4) ?, b = 36.074 (11)?, c =11.034 (3)? and Z = 16. Compound 1 is a coordination polymer in which the three-dimensional lattice framework is realized by the interconnectivity between K+ cations, Sr2+ cations, aqua ligands and [Cr(C2O4)3]3 complex anions. The asymmetric unit of 1 consists of one cationic motif formally written [(H2O)2K(μ-H2O)Sr]3+ and one anionic entity, [Cr(C2O4)3]3. The K+ and Sr2+ ions in the cationic motif are both eight-coordinate while the Cr3+ ions in the anionic complex are six-coordinate in a distorted octahedral geometry. Coulombic interactions between the ionic motifs and the three-dimensional H-bonding involving aqua ligands help to consolidate the bulk structure. Thermogra-vimetric analysis (TGA) shows that compound 1 is stable to heat up to ca. 80.

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Nenwa, J. , Kaboré, I. , Mbiangué, Y. , Djonwouo, P. and Ndifon, P. (2014) A Chiral Three Dimensional Potassium(I)/Strontium(II)/Chromium(III) Oxalato-Bridged Coordination Polymer: Synthesis, Characterization and Thermal Analysis. Crystal Structure Theory and Applications, 3, 67-75. doi: 10.4236/csta.2014.34008.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Moulton, B. and Zaworotko, M.J. (2001) From Molecules to Crystal Engineering: Supramolecular Isomerism and Polymorphism in Network Solids. Chemical Reviews, 101, 1629-1658.
[2] Rao, C.N.R. and Nath, H. (2003) Inorganic Nanotubes. Dalton Transactions, 1-24.
[3] Pardo, E., Train, C., Boubekeur, K., Gontard, G., Cano, J., Lloret, F., Nakatani, K. and Verdaguer, M. (2012) Topological Versatility of Oxalate-Based Bimetallic One-Dimensional (1D) Compounds Associated with Ammonium Cations. Inorganic Chemistry, 51, 11582-11593.
[4] Coronado, E., Galán-Mascarós, J.R., Gómez-Garcí a, C.J. and Martí nez-Agudo, J.M. (2001) Molecule-Based Magnets Formed by Bimetallic Three-Dimensional Oxalate Networks and Chiral Tris(bipyridyl) Complex Cations. The Series [ZII(bpy)3][ClO4][MIICrIII(ox)3] (ZII = Ru, Fe, Co, and Ni; MII = Mn, Fe, Co, Ni, Cu, and Zn; ox = Oxalate Dianion). Inorganic Chemistry, 40, 113-120.
[5] Vaidhyanathan, R., Natarajan, S. and Rao, C.N.R. (2001) Three-Dimensional Yttrium Oxalates Possessing Large Channels. Chemistry of Materials, 13, 185-191.
[6] Decurtins, S., Schmalle, H.W., Schneuwly, P., Ensling, J. and Guetlich, P. (1994) A Concept for the Synthesis of 3- Dimensional Homo- and Bimetallic Oxalate-Bridged Networks [M2(ox)3]n. Structural, Moessbauer, and Magnetic Studies in the Field of Molecular-Based Magnets. Journal of the American Chemical Society, 116, 9521-9528.
[7] Lacroix, P.G., Malfant, I., Bé nard, S., Yu, P., Riviè re, E. and Nakatani, K. (2001) Hybrid Molecular-Based Magnets Containing Organic NLO Chromophores: A Search toward an Interplay between Magnetic and NLO Behavior. Chemistry of Materials, 13, 441-449.
[8] André s, R., Brissard, M., Gruselle, M., Train, C., Vaissermann, J., Malé zieux, B., Jamet, J.P. and Verdaguer, M. (2001) Rational Design of Three-Dimensional (3D) Optically Active Molecule-Based Magnets: Synthesis, Structure, Optical and Magnetic Properties of {[Ru(bpy)3]2+, ClO4–, [MnIICrIII(ox)3]–}n and {[Ru(bpy)2ppy]+, [MIICrIII(ox)3]–}n, with MII = MnII, NiII. X-Ray Structure of {[ΔRu(bpy)3]2+, ClO4–, [ΔMnIIΔCrIII(ox)3]–}n and {[ΛRu(bpy)2ppy]+, [ΛMnIIΛCrIII(ox)3]–}n. Inorganic Chemistry, 40, 4633-4640.
[9] Decurtins, S., Schmalle, H.W., Pellaux, R., Schneuwly, P. and Hauser, A. (1996) Chiral, Three-Dimensional Supramolecular Compounds: Homo- and Bimetallic Oxalate- and 1,2-Dithiooxalate-Bridged Networks. A Structural and Photophysical Study. Inorganic Chemistry, 35, 1451-1460.
[10] Bé lombé , M.M., Nenwa, J., Mbiangué , Y.A., Evina-Nnanga, G., Mbomé kallé , I.M., Hey-Hawkins, E., Lö nnecke, P. and Majoumo, F. (2003) Unusual Aquation of Ba2+ Ions in the Solid State: Synthesis and X-ray Structural and Spectroscopic Characterization of the Novel Polymeric Complex Salt of Empirical Formula {Ba6(H2O)17[Cr(ox)3]4}•7H2O (ox = Oxalate Dianion). Dalton Transactions, 2117-2118.
[11] Makon Ma Houga, N., Dolinar, B.S., Nenwa, J. and Gouet, B. (2014) Synthesis, Crystal Structure and Thermal Behavior of a 3-D Barium(II)/Iron(III)-Oxalate Polymer. Open Journal of Inorganic Chemistry, 4, 21-29.
[12] Bé lombé , M.M., Nenwa, J., Mbiangué , Y.A., Gouet, B., Majoumo, F., Hey-Hawkins, E. and Lö nnecke, P. (2009) Water-Filled Pseudo-Nanotubes in Ag11.60H0.40[Cr(C2O4)3]4•15H2O: Synthesis, Characterization and X-Ray Structure. Inorganica Chimica Acta, 362, 1-4.
[13] Bé lombé , M.M., Nenwa, J., Tene, T.O. and Fokwa, B.P.T. (2010) Synthesis, X-Ray Structure and Thermal Behavior of Isomorphous Silver-Deficient Channel Lattice Frameworks with General Formula [(Ag0.25/M0.25)(H2O)]@[Ag2M- (C2O4)3]•4H2O (M = CoIII, CrIII). Global Journal of Inorganic Chemistry, 1, 34-41.
[14] Bé lombé , M.M., Nenwa, J., Mbiangué , Y.A., Majoumo, F., Lönnecke, P. and Hey-Hawkins, E. (2009) Hydrogen- Bonded Pillars of Alternating Chiral Complex Cations and Anions: 1. Synthesis, Characterization, X-Ray Structure and Thermal Stability of catena-{[Co(H2oxado)3][Cr(C2O4)3]•5H2O} and of Its Precursor (H3oxado)-[Co(H2oxado)3]-(SO4)2•2H2O. Dalton Transactions, 4519-4525.
[15] Mbiangué, Y.A., Nenwa, J., Bé lombé , M.M., Ngoune, J. and Álvarez, E. (2012) Hydrogen-Bonded Pillars of Alternating Chiral Complex Cations and Anions: 2. Synthesis, Characterization and X-ray Structure of Isomorphous catena-{(H3O) [K(H2O)3]@[Ni(H2oxado)3]2[Cr(C2O4)3]2?3H2O} and catena-{(H3O)[Li(H2O)3]@[Ni(H2oxado)3]2[Cr(C2O4)3]2?3H2O}. ScienceJet, 1, 1-9.
[16] Train, C., Gheorghe, R., Krstic, V., Chamoreau, L.M., Ovanesyan, N.S., Rikken, G.L.J.A., Gruselle, M. and Verdaguer, M. (2008) Strong Magneto-Chiral Dichroism in Enantiopure Chiral Ferromagnets. Nature Materials, 7, 729-734.
[17] Bailar Jr., J.C. and Jones, E.M. (1939) Tris(oxalato) Salts. Inorganic Syntheses, 1, 35-38.
[18] SMART & SAINT Software Reference Manual, Version 6.45. Bruker Analytical X-Ray Systems, Inc., Madison, 2003.
[19] Sheldrick, G.M. (2002) SADABS, Version 2.05. A Software for Empirical Absorption Correction. University of Göttingen, Göttingen.
[20] Sheldrick, G.M. (2000) SHELXTL Version 6.1. Bruker AXS Inc., Madison.
[21] Sheldrick, G.M. (2001) SHELXTL Version 6.12. Bruker AXS Inc., Madison.
[22] Sheldrick, G.M. (1997) SHELXL97 Program for Crystal Structure Refinement. University of Göttingen, Göttingen.
[23] Brandenburg, K. (2005) Diamond, Version 3.1. Crystal Impact GbR, Bonn.
[24] Nakamoto, K. (1997) Infrared Spectra of Inorganic and Coordination Compounds. 5th Edition, John Wiley, New York, 74-77.
[25] Gouet, B., Signé , M., Nenwa, J. and Fokwa, B.P.T. (2013) Synthesis, Crystal Structure and Spectroscopic Characterization of an Oxalato Bridged Silver-Deficient Chromium(III) Salt with Water-Filled Nanochannels. Research Journal of Chemistry and Environment, 17, 57-63.
[26] Masters, V., Gahan, L.R. and Kennard, C.H.L. (1997) Calcium Potassium Tris(oxalato-O1,O2)chromate(III) Pentahydrate. Acta Crystallographica Section C, 53, 1576-1577.

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