| 词条 | 1,2-Diiodoethylene |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 477203654 | ImageFileL1 = Cis-isomer.png | ImageSizeL1 = | ImageNameL1 = Skeletal formula of cis-1,2-difluoroethene | ImageFileL2 = Skeletal formula of Cis-1,2-DIIODOETHYLENE.png | ImageNameL2 = Skeletal formula of Cis-1,2-DIIODOETHYLENE | ImageSizeL2 = | ImageFileR1 = Trans-isomer.png | ImageNameR1 = Skeletal formula of trans-1,2-difluoroethene | ImageSizeR1 = | ImageFileR2 = Skeletal formula of Trans-1,2-DIIODOETHYLENE.png | ImageNameR2 = Skeletal formula of Trans-1,2-DIIODOETHYLENE | ImageSizeR2 = | ImageCaptionL1= cis-1,2-Diiodoethene (Z) | ImageCaptionR1= trans-1,2-Diiodoethene (E) | ImageCaptionL2= cis-1,2-Diiodoethene (Z) | ImageCaptionR2= trans-1,2-Diiodoethene (E) | IUPACName = 1,2-Diiodoethylene | OtherNames = 1,2-Diiodoethene sym-Diiodoethylene | Section1 = {{Chembox Identifiers | CASNo_Ref = {{cascite|correct|CAS}} | CASNo = 590-27-2 | CASNo_Comment = (Z) | CASNo1 = 20244-70-6 | CASNo1_Comment = (E) | EC_number = 209-821-0 | PubChem = 11537 | PubChem1 = 5463341 | PubChem1_Comment = (Z) | PubChem2 = 5378102 | PubChem2_Comment = (E) | ChemSpiderID = 4576037 | ChemSpiderID_Comment = (Z) | ChemSpiderID1 = 4527007 | ChemSpiderID1_Comment = (E) | InChI = 1S/C2H2I2/c3-1-2-4/h1-2H/b2-1+ | InChIKey = CVOGMKGEVNGRSK-OWOJBTEDSA-N | SMILES = C(=CI)I | SMILES2 = C(=C/I)\\I }} | Section2 = {{Chembox Properties | C=2|H=2|I=2 | Appearance = | MolarMass = 279.847 g/mol | MeltingPtC = 73.4 | BoilingPtC = 196 to 197
1,2-Diiodoethylene, also known as 1,2-diiodoethene, is an organoiodide with the molecular formula C{{sub|2}}H{{sub|2}}I{{sub|2}}. It can exist as either of two geometric isomers, cis-1,2-diiodoethylene or trans-1,2-diiodoethylene. Preparation1,2-Diodoethylene can be made from acetylene bubbled into a solution of iodine and potassium iodide.[1] E-Z relative stabilityLike most cis-trans compounds, the Z isomer (cis) is less stable than the E isomer (trans) by 2 kcal/mol.{{citation needed|date=June 2017}} See also
References1. ^{{cite web|title=Synthesis of 1,2-diiodoethene|url=http://www.prepchem.com/synthesis-of-1-2-diiodoethene/|website=PrepChem.com|date=21 December 2015}} {{DEFAULTSORT:Diiodoethylene, 1, 2-}} 3 : Organoiodides|Alkene derivatives|Halogenated solvents |
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