Synthesis and Crystal Structure of Rubidium Lanthanum Tetraacetate,RbLa(CH3COO)4 |
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Authors: | Gerd Meyer Ibrahim Kutlu |
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Abstract: | The anhydrous rubidium tetraacetato lanthanate, RbLa(CH3COO)4, is obtained together with Rb2La(CH3COO)5(H2O) as colourless single crystals from a 1 : 2 mixture of Rb2CO3 and La(CH3COO) · 1.5 H2O in acetic acid by slow evaporation. The crystal structure [orthorhombic, Pnnm, Z = 2, a = 1242.0(3), b = 1650.1(4), c = 698.0(4) pm, R = 0.028, Rw = 0.071] contains La3+ nine coordinate by oxygen atoms of six acetate ligands. The polyhedra are connected to dimers and further to double chains running parallel to [001]. These [La(CH3COO)4]– double chains are surrounded by four like double chains and connected by Rb+ ions that are seven coordinate by oxygen atoms. |
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Keywords: | Lanthanum Crystal structure |
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