Synthesis, crystal structure, and IR and Moessbauer spectroscopy of the isotypic series M{sub 3}Fe{sub 2}(SeO{sub 3}){sub 6} {center_dot} 2H{sub 2}O (M = Mg, Co, Ni)
- Universitaet Wien (Austria)
- Universitaet Salzburg (Austria)
The representatives of the new isotypic series M{sub 3}Fe{sub 2}(SeO{sub 3}){sub 6}{center_dot} 2H{sub 2}O (M = Mg, Co, Ni) were prepared at 500 K from aqueous solutions, kept in Teflon-coated autoclaves. Their crystal structures were determined by direct methods from single-crystal X-ray diffraction data in the space group P{bar 1} with Z = 1. Mg{sub 3}Fe{sub 2}(SeO{sub 3}){sub 6} {center_dot} 2H{sub 2}O: a = 6.494(2), b = 7.959(3), c = 8.810(4) {angstrom}, {alpha} = 85.88(2), {beta} = 79.12(2), {gamma} = 76.09(2){degrees}, V = 433.9 {angstrom}{sup 3}. Co{sub 3}Fe{sub 2} (SeO{sub 3}){sub 6} {center_dot} 2H{sub 2}O: a = 6.520(2), b = 7.995(3), c = 8.774(4) {angstrom}, {alpha} = 85.51(2), {beta} = 78.77(1), {gamma} = 75.84(1){degrees}, V = 434.8 {angstrom}{sup 3}. Ni{sub 3}Fe{sub 2} (SeO{sub 3}){sub 6} {center_dot} 2H{sub 2}O: a = 6.474(2), b = 7.943(3), c = 8.736(4) {angstrom}, {alpha} = 85.37(1), {beta} = 78.51(1), {gamma} = 75.91(1){degrees}, V = 426.7 {angstrom}{sup 3}. The three different M sites are commonly occupied by M{sup 2+} and Fe{sup 3+} atoms in varying ratios. MO{sub 6} octahedra are linked to each other by edges to build four-membered groups. Via common corners with further MO{sub 6} octahedra and trigonal pyramidal SeO{sub 3} groups, complex sheets parallel to (001) are formed which are interconnected by hydrogen bonds only. IR and Moessbauer spectra are discussed.
- OSTI ID:
- 589019
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 131; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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