Indium(I) chloride

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Indium(I) chloride
Identifiers
3D model (
JSmol
)
ChemSpider
  • InChI=1S/ClH.In/h1H;/q;+1/p-1
    Key: APHGZSBLRQFRCA-UHFFFAOYSA-M
  • [Cl-].[In+]
Properties
Appearance red and yellow
Density 4.218 g/cm3[1]
Melting point 216 °C (421 °F; 489 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Indium(I) chloride (also indium monochloride) is the chemical compound with the formula InCl. Indium monochloride occurs as a yellow cubic form below 120 °C and above this temperature as a red orthorhombic form.[2] InCl is one of three known indium chlorides.

Synthesis and structure

InCl can be prepared by heating indium metal with indium trichloride in a sealed tube.[3][4]

According to

polymorph resembles that of sodium chloride except that the Cl-In-Cl angles are not 90°, but range between 71 and 130°. The red (high T) polymorph crystallizes in the thallium(I) iodide motif.[5][6]

Reactivity

The relatively high energy level of the 5s electrons of the indium center make InCl susceptible to oxidation as well as disproportionation into In(0) and InCl3.[2] Tetrahydrofuran (THF) appears to facilitate the disproptionation of InCl as well as other indium(I) halides.[2]

History

Indium(I) chloride was first isolated in 1926 as part of an investigation on the compounds formed between indium and chlorine.[7]

References

  1. doi:10.1107/S0365110X66002032
    .
  2. ^
    PMID 17212469
    .
  3. ISSN 0020-1669
    .
  4. ISSN 0022-328X
    .
  5. doi:10.1016/0022-4596(80)90428-4
    .
  6. doi:10.1107/S056774087801081X
    .
  7. doi:10.1002/zaac.19261520128
    .


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