Neodymium(III) iodate is an inorganic compound with the chemical formula Nd(IO3)3.
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| Nd(IO3)3 | |
| Molar mass | 668.95 g/mol |
| Appearance | purple solid[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
editNeodymium(III) iodate can be produced by the hydrothermal reaction of neodymium(III) nitrate or neodymium(III) oxide and iodic acid in water at 230 °C:[1]
- Nd(NO3)3 + 3 HIO3 → Nd(IO3)3 + 3 HNO3
- Nd2O3 + 6 HIO3 → 2 Nd(IO3)3 + 3 H2O
Properties
editNeodymium(III) iodate can be thermally decomposed as follows:[2]
- 7 Nd(IO3)3 → Nd5(IO6)3 + Nd2O3 + 9 I2 + 21 O2
Its monohydrate is known, crystallizing in the monoclinic crystal system, with space group P21, and its pyroelectric coefficient at room temperature is 2.2×10−5 C·m−2/K.[3]
References
edit- ^ a b Wang, Wenjun; Cheng, Hefeng; Huang, Baibiao; Li, Xinru; Qin, Xiaoyan; Zhang, Xiaoyang; Dai, Ying (2014-05-19). "Ln(IO 3 ) 3 (Ln = Ce, Nd, Eu, Gd, Er, Yb) Polycrystals As Novel Photocatalysts for Efficient Decontamination under Ultraviolet Light Irradiation". Inorganic Chemistry. 53 (10): 4989–4993. doi:10.1021/ic500027f. ISSN 0020-1669. PMID 24796497.
- ^ Ghosh, B. P.; Nag, K. (Jul 1985). "Thermal and dielectric properties of rare earth iodates". Journal of Materials Science. 20 (7): 2335–2344. Bibcode:1985JMatS..20.2335G. doi:10.1007/bf00556063. ISSN 0022-2461.
- ^ Liminga, R.; Abrahams, S. C.; Bernstein, J. L. (1975-02-01). "Pyroelectric Nd(IO3)3⋅H2O. Crystal structure of the transition-metal iodates. II". The Journal of Chemical Physics. 62 (3): 755–763. doi:10.1063/1.430521. ISSN 0021-9606.