Neodymium(III) iodide

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Neodymium (III) iodide
Names
IUPAC name
Triiodoneodymium
Other names
Neodymium triiodide, Neodymium iodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.047 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 237-467-7
PubChem CID
  • InChI=1S/3HI.Nd/h3*1H;/q;;;+3/p-3
    Key: DKSXWSAKLYQPQE-UHFFFAOYSA-K
  • I[Nd](I)I
Properties
NdI3
Molar mass 524.96 g/mol
AppearanceGreen solid
Melting point 684 °C (1,263 °F; 957 K)
Structure
9
Hazards
GHS labelling:
GHS-pictogram-exclam.svg GHS-pictogram-silhouette.svg GHS-pictogram-pollu.svg [1]
Danger [2]
Related compounds
Other anions
Neodymium acetate, Neodymium hydride, Neodymium nickelate
Other cations
erbium iodide, cerium iodide, terbium iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Neodymium(III) iodide is an inorganic salt of iodine and neodymium with the formula NdI3. [3] Neodymium uses the +3 oxidation state in the compound. The anhydrous compound [2] is a green powdery [2] solid at room temperature.

Contents

Preparation

Heating neodymium and iodine in an inert atmosphere produces this salt:[ citation needed ]

2 Nd + 3 I2 → 2 NdI3

It can also be prepared by the reaction of neodymium(III) oxide and hydroiodic acid to make a hydrate: [4]

Nd2O3 + 6 HI → 2 NdI3 + 3 H2O

The anhydrate can then be obtained by heating the nonahydrate with ammonium iodide: [4]

NdI3 • 9 H2O + nNH4I → NdI3 + nNH3 + nHI + 9H2O

Physical properties

Crystal structure of Neodymium iodide Nd 0 I Unit cell of PuBr3.png
Crystal structure of Neodymium iodide Nd I

Neodymium(III) iodide forms green, water-soluble hygroscopic crystals. It has a melting point of 784°C. It forms a nonahydrate crystal NdI3.9H2O – belongs to the orthorhombic crystal system, space group Pmmn, lattice constants a = 1.16604 nm, b = 0.80103 nm, c = 0.89702 nm, Z = 4. [5]

Other compounds

NdI3 also forms some compounds with N2H4, such as NdI3·3N2H4·2H2O which is a dark green crystal, soluble in methanol and ethanol and insoluble in water, benzene and toluene, d20°C = 3.42 g/cm³. [6]

NdI3 also forms some compounds with urea, such as NdI3 5CO(NH2)2 which is a lavender color crystal. [7]

NdI3 also forms some compounds with thiourea, such as NdI3·2CS(NH2)2·9H2O which is a pale pink crystal. [8]

See also

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">Iron(III) nitrate</span> Chemical compound

Iron(III) nitrate, or ferric nitrate, is the name used for a series of inorganic compounds with the formula Fe(NO3)3.(H2O)n. Most common is the nonahydrate Fe(NO3)3.(H2O)9. The hydrates are all pale colored, water-soluble paramagnetic salts.

Terbium(III) iodide (TbI3) is an inorganic chemical compound.

<span class="mw-page-title-main">Antimony triiodide</span> Chemical compound

Antimony triiodide is the chemical compound with the formula SbI3. This ruby-red solid is the only characterized "binary" iodide of antimony, i.e. the sole compound isolated with the formula SbxIy. It contains antimony in its +3 oxidation state. Like many iodides of the heavier main group elements, its structure depends on the phase. Gaseous SbI3 is a molecular, pyramidal species as anticipated by VSEPR theory. In the solid state, however, the Sb center is surrounded by an octahedron of six iodide ligands, three of which are closer and three more distant. For the related compound BiI3, all six Bi—I distances are equal.

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

Bismuth(III) iodide is the inorganic compound with the formula BiI3. This gray-black salt is the product of the reaction of bismuth and iodine, which once was of interest in qualitative inorganic analysis.

Americium(III) iodide or americium triiodide is the chemical compound, a salt composed of americium and iodine with the formula AmI3.

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

Indium(III) iodide or indium triiodide is a chemical compound of indium and iodine with the formula InI3.

Iron(III) iodide is an inorganic compound with the chemical formula FeI3. It is a thermodynamically unstable compound that is difficult to prepare. Nevertheless, iron(III) iodide has been synthesised in small quantities in the absence of air and water.

Yttrium iodide is a binary inorganic compound, a salt of yttrium and hydroiodic acid with the formula YI
3. The compound forms colorless crystals, soluble in water.

<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.

Praseodymium compounds are compounds formed by the lanthanide metal praseodymium (Pr). In these compounds, praseodymium generally exhibits the +3 oxidation state, such as PrCl3, Pr(NO3)3 and Pr(CH3COO)3. However, compounds with praseodymium in the +2 and +4 oxidation states, and unlike other lanthanides, the +5 oxidation state, are also known.

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

Neodymium(II) iodide or neodymium diiodide is an inorganic salt of iodine and neodymium the formula NdI2. Neodymium uses the +2 oxidation state in the compound.

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

Praseodymium(III) iodide is an inorganic salt, consisting of the rare-earth metal praseodymium and iodine, with the chemical formula PrI3. It forms green crystals. It is soluble in water.

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

Lanthanum(III) iodide is an inorganic compound containing lanthanum and iodine with the chemical formula LaI
3.

Europium(III) iodide is an inorganic compound containing europium and iodine with the chemical formula EuI3.

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

Lutetium(III) iodide or lutetium iodide is an inorganic compound consisting of iodine and lutetium, with the chemical formula of LuI3.

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

Gadolinium(III) iodide is an iodide of gadolinium, with the chemical formula of GdI3. It is a yellow, highly hygroscopic solid with a bismuth(III) iodide-type crystal structure. In air, it quickly absorbs moisture and forms hydrates. The corresponding oxide iodide is also readily formed at elevated temperature.

Americium compounds are compounds containing the element americium (Am). These compounds can form in the +2, +3, and +4, although the +3 oxidation state is the most common. The +5, +6 and +7 oxidation states have also been reported.

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

Ytterbium(III) iodide is one of ytterbium's iodides, with the chemical formula of YbI3.

Neodymium tungstate is an inorganic compound, a salt of neodymium and tungstic acid with the chemical formula Nd2(WO4)3. It forms hydrated light purple crystals that are slightly soluble in water.

References

  1. ↑ See https://onyxmet.com/index.php?route=product/product&product_id=2733
  2. 1 2 3 See https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium-triiodide#datasheet=LCSS
  3. ↑ Ezhov, Y.S., Komarov, S.A. & Sevast’yanov, V.G. Refinement of molecular constants of neodymium triiodide by electron diffraction. J Struct Chem 41, 593–596 (2000). https://doi.org/10.1007/BF02683920
  4. 1 2 Kutscher, J.; Schneider, A. (1971-09-01). "Notiz zur Präparation von wasserfreien Lanthaniden-Haloge-niden, Insbesondere von Jodiden". Inorganic and Nuclear Chemistry Letters (in German). 7 (9): 815–819. doi:10.1016/0020-1650(71)80253-2. ISSN   0020-1650.
  5. ↑ T. Timofte, A. Babai, G. Meyer and A.-V. Mudring (2005). "Neodymium triiodide nonahydrate". Acta Crystallographica Section E. E61 (5): i87–i88. doi:10.1107/S160053680501216X.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. ↑ Uchenye zapiski: Serii︠a︡ khimicheskikh nauk (S.M. Kirov adyna Azărbai̐jan Dȯvlăt Universiteti; 1975), page 78. Retrieved January 13, 2021. (Translated from Vietnamese)
  7. ↑ Russian Journal of Inorganic Chemistry, Episode 18, Part 2 (British Library Lending Division with the cooperation of the Royal Society of Chemistry, 1973), page 1655. Retrieved 13 January 2021.
  8. ↑ Alikberova L.Yu., Albov D.V., Antonenko T.A., Kochetova I.M., Rukk N.S. — Thiourea complexes of neodymium(III) and gadolinium(III) iodides. synthesis and structure. Fine Chemical Technologies. 2010, 5 (3): 30–33. (in Russian).
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