Hydrothermal synthesis and structural characterization of a novel NLO compound, La(MoO 2)(OH)(IO 3) 4

• Published in: Journal of alloys and compounds Vol. 396; no. 1; pp. 255 - 259
• Main Authors: Chen, Xuean, Chang, Xinan, Zang, Hegui, Wang, Qian, Xiao, Weiqiang
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 21.06.2005; Elsevier
• Subjects: Crystal structure; Exact sciences and technology; Hydrothermal synthesis; Lanthanum molybdenyl iodate; Physics; Hydrothermal synthesis; Lanthanum molybdenyl iodate; Crystal structure; Iodates; Monocrystals; Space groups; Lanthanum compounds; Infrared spectra; Molybdenum; Structural analysis
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2004.12.012

A novel lanthanum molybdenyl iodate, La(MoO 2)(OH)(IO 3) 4, has been prepared by hydrothermal reactions at 170 °C. The X-ray single-crystal structural analysis showed that it crystallizes in the polar and chiral space group P2 1 with a = 7.0513(7) Å, b = 14.225(1) Å, c = 7.1206(8) Å, β = 115.653(8)°, Z = 2, R 1 / w R 2 = 0.0269 / 0.0608 for 2828 observed reflections, and 191 parameters. La(MoO 2)(OH)(IO 3) 4 contains a complex three-dimensional network formed by eight co-ordinated La 3+ cations, strongly distorted octahedral Mo(VI) centers, and bridging iodate anions. Infrared spectra further confirmed the presence of MoO 6 6− and IO 3 − groups as well as Mo OH interactions.