Neodymium(III) iodide

Neodymium (III) iodide  Names

IUPAC name

Triiodoneodymium

Other names

Neodymium triiodide, Neodymium iodide

Identifiers

CAS Number

* 13813-24-6

3D model (JSmol)

* Interactive image

ChemSpider |

* 75394

EC Number |

* 237-467-7

PubChem CID

* 83745

InChI

* InChI=1S/3HI.Nd/h3*1H;/q;;;+3/p-3

Key: DKSXWSAKLYQPQE-UHFFFAOYSA-K

SMILES

* I[Nd](I)I

Properties

Chemical formula

| NdI3
Molar mass | 524.96 g/mol
Appearance  | Green solid
Melting point |  684 °C (1,263 °F; 957 K)
Structure

Coordination geometry

| 9
Hazards
GHS pictograms | [1]
GHS Signal word | 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).

Infobox references

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

* 1 Preparation
* 2 Physical properties
* 3 Other compounds
* 4 See also
* 5 References

## 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 Nd3+ 0 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

* Neodymium(II) iodide
* Neodymium
* Iodine
* Lanthanide

## References

1. ↑ See https://onyxmet.com/index.php?route=product/product&product_id=2733
2. ↑ 2.0 2.1 2.2 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. ↑ 4.0 4.1 Kutscher, J.; Schneider, A. (1971-09-01). "Notiz zur Präparation von wasserfreien Lanthaniden-Haloge-niden, Insbesondere von Jodiden" (in de). Inorganic and Nuclear Chemistry Letters 7 (9): 815–819. doi:10.1016/0020-1650(71)80253-2. ISSN 0020-1650. https://dx.doi.org/10.1016/0020-1650(71)80253-2.
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.
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).

* v
* t
* e

Neodymium compounds

* NdAl3(BO3)4
* NdBr3
* NdCl3
* NdF3
* Nd(OH)3
* NdNiO3
* NdN
* Nd(NO3)3
* Nd2O3
* Nd2(SO4)3

* v
* t
* e

Iodine compounds

Iodine(-I)|

* HI
* AtI
* ICN
* I−

Iodine(I)|

* HIO
* ICl
* IF
* IBr

Iodine(III)|

* HIO2
* ICl3
* IF3

Iodine(V)|

* HIO3
* IF5
* I2O5

Iodine(VII)|

* HIO4
* H5IO6
* IF7

HI |  |  |  | He

|
|
|
|

LiI | BeI2 | BI3 | CI4 | NI3 | I2O4,
I2O5,
I4O9 | IF,
IF3,
IF5,
IF7 | Ne
NaI | MgI2 | AlI3 | SiI4 | PI3,
P2I4 | S  | ICl,
ICl3 | Ar
KI | CaI2 | Sc  | TiI4 | VI3 | CrI3 | MnI2 | FeI2 | CoI2 | NiI2 | CuI | ZnI2 | Ga2I6 | GeI2,
GeI4 | AsI3 | Se  | IBr | Kr
RbI | SrI2 | YI3 | ZrI4 | NbI5 | Mo  | Tc  | Ru  | Rh  | Pd  | AgI | CdI2 | InI3 | SnI4,
SnI2 | SbI3 | TeI4 | I  | Xe
CsI | BaI2 |  | HfI4 | TaI5 | W  | Re  | Os  | Ir  | Pt  | AuI | Hg2I2,
HgI2 | TlI | PbI2 | BiI3 | Po  | AtI | Rn
Fr  | RaI2 |  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
La  | Ce  | Pr  | Nd  | Pm  | SmI2 | Eu  | Gd  | TbI3 | Dy  | Ho  | Er  | Tm  | Yb  | Lu
Ac  | ThI4 | Pa  | UI3,
UI4 | Np  | Pu  | Am  | Cm  | Bk  | Cf  | EsI3 | Fm  | Md  | No  | Lr

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