1,2-Diiodoethylene

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1,2-Diiodoethylene
Skeletal formula of cis-1,2-difluoroethene
cis-1,2-Diiodoethene (Z)
Skeletal formula of trans-1,2-difluoroethene
trans-1,2-Diiodoethene (E)
Skeletal formula of Cis-1,2-DIIODOETHYLENE
cis-1,2-Diiodoethene (Z)
Skeletal formula of Trans-1,2-DIIODOETHYLENE
trans-1,2-Diiodoethene (E)
Names
IUPAC name
1,2-Diiodoethylene
Other names
1,2-Diiodoethene
sym-Diiodoethylene
Identifiers
3D model (JSmol)
EC Number 209-821-0
Properties
C2H4I2
Molar mass 279.847 g/mol
Melting point 73.4 °C (164.1 °F; 346.5 K)
Boiling point 196 to 197 °C (385 to 387 °F; 469 to 470 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

1,2-Diiodoethylene, also known as 1,2-diiodoethene, is an organoiodide with the molecular formula C2H2I2. It can exist as either of two geometric isomers, cis-1,2-diiodoethylene or trans-1,2-diiodoethylene.

Preparation[edit]

1,2-Diodoethylene can be made from acetylene bubbled into a solution of iodine and potassium iodide.[1]

The preparation of 1,2-diiodoethylene.
The preparation of 1,2-diiodoethylene

E-Z relative stability[edit]

Like most cis-trans compounds, the Z isomer (cis) is less stable than the E isomer (trans) by 2 kcal/mol.[citation needed]

See also[edit]

References[edit]

  1. ^ "Synthesis of 1,2-diiodoethene". PrepChem.com. 21 December 2015.