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Synthesis and Crystal Structure of Rubidium Lanthanum Tetraacetate, RbLa(CH3COO)4

✍ Scribed by Gerd Meyer; Ibrahim Kutlu

Publisher: John Wiley and Sons
Year: 2000
Tongue: German
Weight: 108 KB
Volume: 626
Category: Article
ISSN: 0372-7874
DOI: 10.1002/(sici)1521-3749(200004)626:4<975::aid-zaac975>3.0.co;2-7

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✦ Synopsis

The anhydrous rubidium tetraacetato lanthanate, RbLa(CH 3 COO) 4 , is obtained together with Rb 2 La(CH 3 COO) 5 (H 2 O) as colourless single crystals from a 1 : 2 mixture of Rb 2 CO 3 and La(CH 3 COO) ´1.5 H 2 O 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, R w = 0.071] contains La 3+ 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(CH 3 COO) 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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