Neodymium(III) iodate

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Neodymium(III) iodate
Identifiers
3D model (JSmol)
EC Number
  • 238-789-0
PubChem CID
  • InChI=1S/3HIO3.Nd/c3*2-1(3)4;/h3*(H,2,3,4);/q;;;+3/p-3
    Key: SEHRUTVBKBCDGC-UHFFFAOYSA-K
  • [O-]I(=O)=O.[O-]I(=O)=O.[O-]I(=O)=O.[Nd+3]
Properties
Nd(IO3)3
Molar mass 668.95
Appearancepurple solid [1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Neodymium(III) iodate is an inorganic compound with the chemical formula Nd(IO3)3.

Contents

Preparation

Neodymium(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

Neodymium(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]

Related Research Articles

Neodymium(III) chloride or neodymium trichloride is a chemical compound of neodymium and chlorine with the formula NdCl3. This anhydrous compound is a mauve-colored solid that rapidly absorbs water on exposure to air to form a purple-colored hexahydrate, NdCl3·6H2O. Neodymium(III) chloride is produced from minerals monazite and bastnäsite using a complex multistage extraction process. The chloride has several important applications as an intermediate chemical for production of neodymium metal and neodymium-based lasers and optical fibers. Other applications include a catalyst in organic synthesis and in decomposition of waste water contamination, corrosion protection of aluminium and its alloys, and fluorescent labeling of organic molecules (DNA).

<span class="mw-page-title-main">Sodium iodate</span> Chemical compound

Sodium iodate (NaIO3) is the sodium salt of iodic acid. Sodium iodate is an oxidizing agent. It has several uses.

<span class="mw-page-title-main">Neodymium(III) fluoride</span> Inorganic chemical compound

Neodymium(III) fluoride is an inorganic chemical compound of neodymium and fluorine with the formula NdF3. It is a purplish pink colored solid with a high melting point.

The iodate fluorides are chemical compounds which contain both iodate and fluoride anions (IO3− and F−). In these compounds fluorine is not bound to iodine as it is in fluoroiodates.

The carbonate oxalates are mixed anion compounds that contain both carbonate (CO3) and oxalate (C2O4) anions. Most compounds incorporate large trivalent metal ions, such as the rare earth elements. Some carbonate oxalate compounds of variable composition are formed by heating oxalates.

<span class="mw-page-title-main">Neodymium(III) acetate</span> Compound of neodymium

Neodymium(III) acetate is an inorganic salt composed of a neodymium atom trication and three acetate groups as anions where neodymium exhibits the +3 oxidation state. It has a chemical formula of Nd(CH3COO)3 although it can be informally referred to as NdAc because Ac is an informal symbol for acetate. It commonly occurs as a light purple powder.

Neodymium(III) hydride is an inorganic compound composed of neodymium and hydrogen with a chemical formula NdH3. In this compound, the neodymium atom is in the +3 oxidation state and the hydrogen atoms are -1. It is highly reactive.

Neodymium(III) iodide is an inorganic salt of iodine and neodymium with the formula NdI3. Neodymium uses the +3 oxidation state in the compound. The anhydrous compound is a green powdery solid at room temperature.

<span class="mw-page-title-main">Neodymium compounds</span> Chemical compounds with at least one neodymium atom

Neodymium compounds are compounds formed by the lanthanide metal neodymium (Nd). In these compounds, neodymium generally exhibits the +3 oxidation state, such as NdCl3, Nd2(SO4)3 and Nd(CH3COO)3. Compounds with neodymium in the +2 oxidation state are also known, such as NdCl2 and NdI2. Some neodymium compounds have colors that vary based upon the type of lighting.

Neodymium(III) sulfide is a inorganic chemical compound with the formula Nd2S3 composed of a two neodymium atoms in the +3 oxidation state and three sulfur atoms in the +2 oxidation state. Like other rare earth sulfides, neodymium(III) sulfide is used as a high-performance inorganic pigment.

<span class="mw-page-title-main">Neodymium perrhenate</span> Chemical compound

Neodymium perrhenate is an inorganic compound with the chemical formula Nd(ReO4)3, which exists in anhydrous and tetrahydrate. It can be obtained by reacting excess neodymium oxide with 240 g/L perrhenic acid solution. In its solution, NdReO42+ and Nd(ReO4)2+ can be observed with stability constants of 16.5 and 23.6, respectively.

<span class="mw-page-title-main">Neodymium(III) phosphate</span> Chemical compound

Neodymium(III) phosphate is an inorganic compound, with the chemical formula of NdPO4.

Iodate sulfates are mixed anion compounds that contain both iodate and sulfate anions. Iodate sulfates have been investigated as optical second harmonic generators, and for separation of rare earth elements. Related compounds include the iodate selenates and chromate iodates.

Praseodymium(III) iodate is an inorganic compound with the chemical formula Pr(IO3)3.

Thulium iodate is an inorganic compound with the chemical formula Tm(IO3)3. It can be prepared by the hydrothermal reaction of periodic acid and thulium periodate in water at 160 °C. Its crystals can also be crystallized in boiling nitric acid. Its solubility in water is 1.467±0.001 (25 °C, 103 mol·dm−3). Adding dimethyl sulfoxide to water will reduce the solubility.

Ytterbium(III) iodate is an inorganic compound with the chemical formula Yb(IO3)3. Its dihydrate can be prepared by reacting ytterbium sulfate and iodic acid in water at 200 °C. It crystallizes in the P21/c space group, with unit cell parameters a=8.685, b=6.066, c=16.687 Å, β=115.01°.

Promethium iodate is an inorganic compound with the chemical formula Pm(IO3)3. It can be obtained by reacting with potassium iodate, ammonium iodate or a slight excess of iodic acid and Pm3+ solution and precipitating it. Its hydrate, Pm(IO3)3·H2O, crystallizes in the P21 space group, with unit cell parameters a=10.172±13, b=6.700±20, c=7.289±24 Å, β=113.1±0.2°.

Terbium(III) iodate is an inorganic compound with the chemical formula Tb(IO3)3. It can be obtained by the reaction of terbium(III) periodate and periodic acid in water at 160 °C, or by the hydrothermal reaction of terbium(III) nitrate or terbium(III) chloride and iodic acid at 200 °C. It crystallizes in the monoclinic crystal system, with space group P21/c and unit cell parameters a=7.102, b=8.468, c=13.355 Å, β=99.67°.

Holmium iodate is an inorganic compound with the chemical formula Ho(IO3)3. It can be obtained by reacting holmium periodate and periodic acid in water at 170 °C. Its solubility in water is 1.162±0.001 (25 °C, 103 mol·dm−3). Adding ethanol or methanol to water will reduce the solubility.

Samarium iodate is an inorganic compound with the chemical formula Sm(IO3)3.

References

  1. 1 2 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.
  2. ↑ 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.
  3. ↑ 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.
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