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
GHS Signal word	Danger
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.

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, d_20°C = 3.42 g/cm³.^[6]

NdI₃ also forms some compounds with urea, such as NdI₃5CO(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]

References

↑ See https://onyxmet.com/index.php?route=product/product&product_id=2733
↑ ^2.0 ^2.1 ^2.2 See https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium-triiodide#datasheet=LCSS
↑ 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
↑ ^4.0 ^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.
↑ 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.
↑ Uchenye zapiski: Serii︠a︡ khimicheskikh nauk (S.M. Kirov adyna Azărbai̐jan Dȯvlăt Universiteti; 1975), page 78. Retrieved January 13, 2021. (Translated from Vietnamese)
↑ 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.
↑ 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).

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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Original source: https://en.wikipedia.org/wiki/Neodymium(III) iodide. Read more

[1] See https://onyxmet.com/index.php?route=product/product&product_id=2733

[PubChem-2] 2.0 ^2.1 ^2.2 See https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium-triiodide#datasheet=LCSS

[Ezhov-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

[:0-4] 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 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

Neodymium(Iii) Iodide

Contents

Preparation

Physical properties

Other compounds

See also

References