The new heteronuclear iminodiacetic acid (H2L) complexes [LnCu6(μ3-OH)3(HL)2(L)4](ClO4)2·25H2O with Ln = La (1) and Tb (2) have been prepared in aqueous solution and characterized by single-crystal X-ray diffraction to be isomorphous (crystallographic data for 1 and 2: hexagonal, P63/m; a = b = 12.6425(14) Å, c = 24.541(5) Å, Z = 2 (1); a = b = 12.5802(9) Å, c = 24.285(4) Å, Z = 2 (2)). Ln3+ was found to be located in the center of the trigonal prismatic cage formed by six Cu2+ ions, with a tricapped trigonal prismatic coordination environment of nine O atoms. The magnetic properties of complexes 1 and 2 have been studied. The results indicate the presence of ferromagnetic couplings between Tb3+ and Cu2+ in compound 2.
|Original language||English (US)|
|Number of pages||5|
|State||Published - Jun 12 2000|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry