Complexation of trivalent lanthanide cations by inositols in the solid state: crystal structure and an FT-IR study of PrCl3.myo-inositol.9 H2O.
The title compound, PrCl3.C6H12O6.9 H2O crystallized in the monoclinic space group P2(1)/n with cell dimensions a = 15.8293(3), b = 8.67750(10), c = 16.2292(3) A, beta = 107.0788(8) degrees, V = 2130.92(6) A3 and Z = 4. Each Pr ion is coordinated to nine oxygen atoms, two from the inositol and seven from water molecules, with Pr-O distances from 2.4729 to 2.6899 A; the other two water molecules are hydrogen-bonded. No direct contacts exist between Pr and Cl. There is an extensive network of hydrogen bonds formed by hydroxyl groups, water molecules, and chloride ions. The IR spectra of Pr-, Nd-, and Sm-inositol complexes are similar, which shows that the three metal ions have the same coordination mode. The IR results are consistent with the crystal structure.
Yang
L
L
College of Chemistry and Molecular Engineering, Peking University, The University of Hong Kong Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, Peking University, Beijing, PR China.
Wang
Z
Z
Zhao
Y
Y
Tian
W
W
Xu
Y
Y
Weng
S
S
Wu
J
J
D003460:Crystallization; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D007294:Inositol / Q000031:analogs & derivatives* / Q000737:chemistry*; D008958:Models, Molecular; D009354:Neodymium / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D011221:Praseodymium / Q000737:chemistry*; D012493:Samarium / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water / Q000737:chemistry
D009942:Organometallic Compounds; D014867:Water; D009354:Neodymium; D012493:Samarium; D007294:Inositol; D011221:Praseodymium