Co{sub 3}{l_brace}CH{sub 3}C(NH{sub 3})(PO{sub 3}H)(PO{sub 3}){r_brace}{sub 2} {l_brace}CH{sub 3}C(NH{sub 3})(PO{sub 3}H){sub 2}{r_brace}{sub 2}(H{sub 2}O){sub 4}.2H{sub 2}O: A cobalt 1-aminoethylidenediphosphonate with a layer structure
Journal Article
·
· Journal of Solid State Chemistry
- State Key Laboratory of Coordination Chemistry, Department of Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093 (China)
- State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100870 (China)
This paper describes the structure and magnetic properties of a novel cobalt 1-aminoethylidenediphosphonate compound, namely Co{sub 3}{l_brace}CH{sub 3}C(NH{sub 3})(PO{sub 3}H)(PO{sub 3}){r_brace}{sub 2}{l_brace}CH{sub 3}C(NH{sub 3})(PO{sub 3}H){sub 2}{r_brace}{sub 2}(H{sub 2}O){sub 4}.2H{sub 2}O (1). The structure contains a trimer unit of Co{sub 3}{l_brace}CH{sub 3}C(NH{sub 3})(PO{sub 3}H)(PO{sub 3}){r_brace}{sub 2} in which two equivalent phosphonate ligands chelate and bridge the three cobalt ions. Each trimer unit is further linked to its four equivalent neighbors through corner-sharing of CoO{sub 6} octahedra and CPO{sub 3} tetrahedra, forming a two-dimensional layer in the bc-plane which contains 12-membered rings. These layers are connected to each other by extensive hydrogen bonds. Magnetic studies show that weak antiferromagnetic interactions are mediated between the cobalt ions. Crystal data for 1: monoclinic, space group C2/c, a=27.727(4), b=7.1091(11), c=19.827(3)A, {beta}=118.488(3), V=3434.9(9)A{sup 3}, Z=2.
- OSTI ID:
- 20725872
- Journal Information:
- Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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