Synthesis, Characterization and Structure Determination of Di(α-Hydroxyisobutyrate) Diaquo Neotlymium Nitrate

Abstract

Abstract: The synthesis, the crystal structure of neodymium complex Nd (C₄H₇O₃)₂·NO₃ ·2H₂O are presented in this report.The crystal structure was determined by X-ray single crystal diffrarction techniques.The structure was solved by the Patterson method and Fourier techniques and refined by full-matrix least square to give a final R = 0.036 for 1358 reflections.The crystal belongs to monodinic system with space group C2/c.The unit cell parameters are: a = 0.8996(1) nm, b=0.8601 (1) nm, c=2.1111(3) nm, β=92.38(1)°, V=1.6320 nm³, Z = 4, D=1.83 g/cm³.It is confirmed that neodymium is bonded with eight oxygen atoms.The nitrate group in the complex is not coordinated to neodymium, it bad two positions in the crystal.Each two neodymium atoms are connected with two bridging carboxyl group to form a chain polymeric molecule.

Key words: Neodymium, a-Hydroxyisobutylic acid, Complex, Crystal structure, Space group

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XU Cheng, NI Zhao-ai . Synthesis, Characterization and Structure Determination of Di(α-Hydroxyisobutyrate) Diaquo Neotlymium Nitrate[J]. Chem. J. Chinese Universities, 1992, 13(1): 10.

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Synthesis, Characterization and Structure Determination of Di(α-Hydroxyisobutyrate) Diaquo Neotlymium Nitrate

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