| 词条 | Hafnium tetraiodide |
| 释义 |
| ImageFile = HfI4.tif | ImageSize = 270 | ImageAlt = | IUPACName = | OtherNames = |Section1={{Chembox Identifiers | CASNo = 13777-23-6 | PubChem = 83726 | ChemSpiderID = 75548 | EINECS = 621-502-1 | StdInChI=1S/Hf.4HI/h;4*1H/q+4;;;;/p-4 | StdInChIKey = YCJQNNVSZNFWAH-UHFFFAOYSA-J | SMILES = I[Hf](I)(I)I |Section2={{Chembox Properties | Formula = HfI4 | MolarMass = 686.11[1] | Appearance = red-orange[1] | Density = 5.60 g/cm3[1] | MeltingPtC = 449 | MeltingPt_ref = [1] | BoilingPtC = 394 | BoilingPt_notes = (sublimes) | BoilingPt_ref = [1] | Solubility = }} |Section3={{Chembox Structure | CrystalStruct = Monoclinic, mS40 | SpaceGroup = C2/c, No. 15[2] | LattConst_a = 1.1787 nm | LattConst_b= 1.1801 nm | LattConst_c=1.2905 nm }} |Section4={{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} }} Hafnium tetraiodide is the inorganic compound with the formula HfI4. It is a red-orange, moisture sensitive, sublimable solid that is produced by heating a mixture of hafnium with excess iodine.[7] It is an intermediate in the crystal bar process for producing hafnium metal. In this compound, the hafnium centers adopt octahedral coordination geometry. Like most binary metal halides, the compound is a polymeric. It is one-dimensional polymer consisting of chains of edge-shared bioctahedral Hf2I8 subunits, similar to the motif adopted by HfCl4. The nonbridging iodide ligands have shorter bonds to Hf than the bridging iodide ligands.[3] References1. ^1 2 3 4 {{RubberBible92nd|page=4.66}} {{Hafnium compounds}}2. ^{{Cite journal | doi = 10.1016/0022-5088(80)90005-3| title = Hafniumtetrajodid HfI4: Struktur und eigenschaften. Ein neuer AB4-strukturtyp| journal = Journal of the Less Common Metals| volume = 76| pages = 7| year = 1980| last1 = Krebs | first1 = B. | last2 = Sinram | first2 = D. }} 3. ^1 {{Cite journal | doi = 10.1016/0022-5088(80)90005-3| title = Hafniumtetrajodid HfI4: Struktur und eigenschaften. Ein neuer AB4-strukturtyp| journal = Journal of the Less Common Metals| volume = 76| pages = 7| year = 1980| last1 = Krebs | first1 = B. | last2 = Sinram | first2 = D. }} 3 : Iodides|Hafnium compounds|Metal halides |
| 随便看 |
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。