| 词条 | Trans-Dichlorobis(ethylenediamine)cobalt(III) chloride |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 402148878 | Name = trans-Dichlorobis(ethylenediamine)cobalt(III) chloride | ImageFile =Trans-dichlorobis(ethylendiamin)cobalt(III)-chlorid.png | ImageSize = 220 | ImageAlt = Skeletal formulas of cis-dichlorobis(ethylenediamine)cobalt(III) chloride | ImageFile1 = Trans dichloribis(ethylenediamine)cobalt(III) chloride.jpg | ImageSize1 = 230 | ImageAlt1 = sample | OtherNames = |Section1={{Chembox Identifiers | ChemSpiderID_Ref = | ChemSpiderID = | PubChem = 12127156 | InChI = | InChIKey = | StdInChI=1S/2C2H8N2.3ClH.Co/c2*3-1-2-4;;;;/h2*1-4H2;3*1H;/q;;;;;+3/p-3 | StdInChIKey = GVMSQWCTZLHSQH-UHFFFAOYSA-K | SMILES = C(CN)N.C(CN)N.Cl[Co](Cl)Cl | CASNo_Ref = {{cascite|correct|??}} | CASNo = 13408-72-5 | RTECS = |Section2={{Chembox Properties | Formula = C4H16Cl3CoN4 | C=4 | H=16 | Cl=3 | Co=1 | N=4 | Appearance = green solid | Density = | Solubility = good | MeltingPt = decomposes | BoilingPt = |Section3={{Chembox Structure | Coordination = | CrystalStruct = |Section7={{Chembox Hazards | ExternalSDS = | GHSPictograms = {{GHS exclamation mark}} | GHSSignalWord = Warning | HPhrases = {{H-phrases|315|319|335}} | PPhrases = {{P-phrases|261|305+351+338}} | FlashPt = }} trans-Dichlorobis(ethylenediamine)cobalt(III) chloride is an inorganic compound with the formula [CoCl2(en)2]Cl (en = ethylenediamine). It is a green diamagnetic solid that is soluble in water. It is the monochloride salt of the cationic coordination complex [CoCl2(en)2]+. One chloride ion in this salt readily undergoes ion exchange but the two other chlorides are less reactive, being bound to the metal center. The more stable cis-dichlorobis(ethylenediamine)cobalt(III) chloride is also known. SynthesisThe compound is synthesized by the reaction of cobalt(II) chloride and ethylenediamine in hydrochloric acid in the presence of oxygen: 4 CoCl2 + 8 en + 4 HCl + O2 → 4 trans-[CoCl2(en)2]Cl + 2 H2O The initial product contains HCl, which is removed by heating. Alternatively, (carbonato)bis(ethylenediamine)cobalt(III) chloride reacts with hydrochloric acid at 10 °C to give the same species.[1] [Co(CO3)(en)2]Cl + 2 HCl → trans-[CoCl2(en)2]Cl + CO2 + H2O Comparison of cis and trans isomersThis salt is more soluble than the cis isomer. This pair of isomers was significant in the development of the area of coordination chemistry.[2] The trans isomer cation has idealized D2h point group symmetry, whereas the cis isomer cation has C2 symmetry. References1. ^Springbørg, J.; Schaffer, C.E. "Dianionobis(Ethylenediamine)Cobalt(III) Complexes" Inorganic Syntheses, 1973; volume 14, pages 63-77. {{doi|10.1002/9780470132456.ch14}} {{DEFAULTSORT:Dichlorobis(ethylenediamine)cobalt(III) chloride, cis}}2. ^Jörgensen, S.M. "Ueber Metalldiaminverbindungen" Journal für praktische Chemie (in German), 1889, volume 39, page 8. {{doi|10.1002/prac.18890390101}} 5 : Chlorides|Chloro complexes|Cobalt complexes|Ethylenediamine complexes|Metal halides |
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