Octahedral hexanuclear complexes involving light lanthanide ions

• Published in: Inorganica Chimica Acta 2008-06, Vol.361 (8), p.2349-2356
• Main Authors: Calvez, G., Guillou, O., Daiguebonne, C., Car, P.-E., Guillerm, V., Gérault, Y., Le Dret, F., Mahé, N.
• Format: Article
• Language: English
• Subjects: Chemical Sciences; Crystal structure; Inorganic chemistry; Lanthanide based hexanuclear complex
• ISSN: 0020-1693; 1873-3255; 0020-1693
• DOI: 10.1016/j.ica.2007.12.008

Two new hexanuclear complexes involving two of the lightest lanthanide ions have been synthesized and structurally described. The chemical and thermal stabilities studies reveal that they can be used as molecular chemical precursors for further materials synthesis. To the best of our knowledge, the praseodymium-containing hexanuclear complex is the first ever reported. Two new hexanuclear complexes involving two of the lightest lanthanide ions have been synthesized and structurally described. Their chemical formula is [Ln 6(μ 6-O)(μ 3-OH) 8(NO 3) 6(H 2O) 14] · 2NO 3 · 2H 2O with Ln = Pr or Nd. The structure has been solved for the Pr 3+-containing compound. It crystallizes in the monoclinic system, space group P21/ n (no. 14) with a = 12.4163(2) Å, b = 10.51210(10) Å, c = 16.0389(2) Å, β = 95.7810(6)° and Z = 4. The chemical and thermal stabilities of both the compounds have been studied. These studies reveal that they can be used as molecular chemical precursors for further materials synthesis. To the best of our knowledge, this praseodymium-containing hexanuclear complex is the first ever reported.