New metal phosphonates containing coordination piperazine or pyridyl groups

Journal Article · Tue Nov 15 04:00:00 EST 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.09.001· OSTI ID:20784792

Junling, Song ^[1]; Jianggao, Mao ^[1]

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1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002 (China)

Reactions of transition metal(II) salts with three aminophosphonic acids, 1-[(H{sub 2}O{sub 3}PCH{sub 2}){sub 2}NCH{sub 2}CH{sub 2}-]-piperazine-4-CH{sub 2}PO{sub 3}H{sub 2} (H{sub 6}L{sup 1}), 3-pyridyl-CH{sub 2}N(CH{sub 2}PO{sub 3}H{sub 2}){sub 2} (H{sub 4}L{sup 2}) and 4-pyridyl-CH{sub 2}N(CH{sub 2}PO{sub 3}H{sub 2}){sub 2} (H{sub 4}L{sup 3}) afforded three new metal phosphonates, namely, Cu(H{sub 4}L{sup 1}).2H{sub 2}O (1), Co(H{sub 3}L{sup 2}){sub 2}.H{sub 2}O (2) and [Co(H{sub 2}L{sup 3})(H{sub 2}O)].H{sub 2}O (3). The structure of compound 1 features a 1D chain in which the CuN{sub 2}O{sub 3} and CPO{sub 3} polyhedra are interconnected by bridging phosphonate ligands to form 1D chains. Compound 2 has a layered structure. The cobalt(II) ions in the octahedral coordination geometries and {l_brace}CPO{sub 3}{r_brace} tetrahedra are interconnected into an inorganic chain via -N(CH{sub 2}PO{sub 3}H){sub 2} moieties, and adjacent chains are further bridged by the coordination pyridyl groups of H{sub 3}L{sup 2} into a 2D layer. The structure of compound 3 features a 2D double layered structure, in which the Co(II) ions are interconnected by bridging phosphonate groups into a 1D chain along b-axis. Neighboring chains are interconnected by coordination pyridyl groups into a double layer perpendicular to the c-axis.

• OSTI ID: 20784792
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 11 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
COBALT COMPLEXES
CRYSTAL STRUCTURE
HYDROTHERMAL SYNTHESIS
LAYERS
LIGANDS
PHOSPHONATES
PIPERAZINES