Indium(II) chloride

Indium(II) chloride
Names
	Other names Indium dichloride, dichloroindium
Identifiers
CAS Number	13465-11-7;
3D model (JSmol)	Interactive image; Interactive image;
ECHA InfoCard	100.155.590
EC Number	627-209-5;
PubChem CID	139207;
	InChI InChI=1S/2ClH.In/h2*1H;/q;;+2/p-2 Key: VOWMQUBVXQZOCU-UHFFFAOYSA-L;
	SMILES Cl[In]Cl; [In+].[In+3].[Cl-].[Cl-].[Cl-].[Cl-];
Properties
Chemical formula	Cl2In
Molar mass	185.72 g·mol−1
Appearance	colorless crystals
Density	3.46 g/cm3
Melting point	570 °C (1,058 °F; 843 K)
Solubility in water	reacts with water
Related compounds
Related compounds	Tin(II) chloride, Indium(III) chloride
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302, P305, P338, P351, P352
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Indium(II) chloride is an inorganic compound, an indium metal salt and hydrochloric acid with the formula InCl₂.^[1]^[2]^[3] The compound forms colorless crystals, reacts with water.^[4] This is one of three known indium chlorides.

Synthesis[edit]

Indium(II) chloride can be produced via the effect of dry hydrogen chloride on indium metal at 2000 °C:

In + 2HCl → InCl₂ + H₂

Indium(II) chloride forms colorless diffuse crystals of rhombic shape, lattice cell parameters a = 0.964 nm, b = 1.054 nm, c = 0.685 nm, Z = 8.

The molecules are dimers and have a structure In[InCl₄].

Indium(II) chloride reacts with water.^[5]

3InCl₂ → 2InCl₃ + In

2InCl₂ → InCl₃ + InCl

Indium(II) chloride reacts with oxygen in the air when heated:

4InCl₂ + O₂ → 2InOCl + 2InCl₃

^ Kowalik, Patrycja; Bujak, Piotr; Penkala, Mateusz; Maroń, Anna M.; Ostrowski, Andrzej; Kmita, Angelika; Gajewska, Marta; Lisowski, Wojciech; Sobczak, Janusz W.; Pron, Adam (25 January 2022). "Indium(II) Chloride as a Precursor in the Synthesis of Ternary (Ag–In–S) and Quaternary (Ag–In–Zn–S) Nanocrystals". Chemistry of Materials. 34 (2): 809–825. doi:10.1021/acs.chemmater.1c03800. ISSN 0897-4756. PMC 8794001. PMID 35095188.
^ "Indium(II) chloride". Sigma Aldrich. Retrieved 3 April 2023.
^ "Indium(II) Chloride". American Elements. Retrieved 3 April 2023.
^ "Indium(II) chloride (CAS 13465-11-7)". scbt.com. Retrieved 3 April 2023.
^ Haynes, William M. (22 June 2016). CRC Handbook of Chemistry and Physics. CRC Press. p. 4-66. ISBN 978-1-4987-5429-3. Retrieved 3 April 2023.