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Crystal structure of neodymium and gadolinium dihydroxy-nitrate, Ln(OH)/sub 2/NO/sub 3/

Journal Article · · J. Solid State Chem.; (United States)
The crystal structures of Nd(OH)/sub 2/NO/sub 3/ and Gd(OH)/sub 2/NO/sub 3/ have been determined from single-crystal X-ray diffraction techniques. Crystallization occurs in monoclinic space group P2/sub 1/ (No. 4) with a = 6.420(1), b = 3.838(1), c = 7.746(2) A, and ..beta.. = 98.18(2)/sup 0/ for Nd(OH)/sub 2/NO/sub 3/ and a = 6.340(2), b = 3.715(1), c = 7.728(2) A, and ..beta.. = 96.95(2)/sup 0/ for Gd(OH)/sub 2/NO/sub 3/. The structures were refined to residual indices of 0.025 and 0.048, respectively, using 372 and 360 unique reflections. The lanthanoid metal atoms are nine-coordinated, having a tricapped trigonal prismatic geometry. The nitrate counter ion acts as a bidentate ligand, while the two hydroxide oxygen atoms link symmetry-related lanthanoid atoms, forming two-dimensional layers.
Research Organization:
Baylor Univ., Waco, TX
OSTI ID:
5337657
Journal Information:
J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 63:2; ISSN JSSCB
Country of Publication:
United States
Language:
English