Complexation of trivalent lanthanide cations by galactitol in the solid state. The crystal structure and an FT-IR study of 2NdCl3.galactitol.14H2O.
The crystal structure of 2NdCl3.galactitol.14H2O has been determined. The crystal system is triclinic, space group: -1, with unit-cell dimensions: a = 9.736(2), b = 10.396, c = 8.027 A; alpha = 108.05(3), beta = 92.68(3), gamma = 88.44(3) degrees, V= 771.6(3) A3, Z = 2. Each Nd atom is coordinated to nine oxygen atoms, three from the alditol and six from water molecules, with Nd-O distances from 2.461 to 2.552 A. The seventh water molecule is hydrogen-bonded by the hydroxyl hydrogen on O-1 (O-1-H-ll...O-10, 2.639 A). The FT-IR spectra of 2NdCl3.galactitol.14H2O and 2PrCl3.galactitol.14H2O are analogous, and show that Pr and Nd have the same coordination mode. The IR results are consistent with the crystal structures.
Yang
L
L
College of Chemistry and Molecular Engineering, Peking University, Beijing, PR China.
Zhao
Y
Y
Tian
W
W
Jin
X
X
Weng
S
S
Wu
J
J
D002241:Carbohydrates / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D018360:Crystallography, X-Ray; D004376:Galactitol / Q000737:chemistry*; D008674:Metals, Rare Earth / Q000737:chemistry*; D015394:Molecular Structure; D009354:Neodymium / Q000737:chemistry*; D011221:Praseodymium / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared
D002241:Carbohydrates; D002412:Cations; D008674:Metals, Rare Earth; D004376:Galactitol; C053739:neodymium chloride; D009354:Neodymium; D011221:Praseodymium