크립톤(II)디플루오라이드
크립톤(II)디플루오라이드 · ifluorokrypton · difluorokrypton · Krypton difluoride · Krypton(II) difluoride
식별자 및 물리적 특성
| CAS No. | 13773-81-4 |
|---|---|
| 분자식 | F2Kr |
| 평균 분자량 | 121.79 g/mol |
| SMILES | F[Kr]F |
| InChIKey | QGOSZQZQVQAYFS-UHFFFAOYSA-N |
| PubChem CID | 83721 |
| DTXSID | DTXSID7065623 |
| 현지명 | 크립톤(II)디플루오라이드 |
화학 및 물리적 성질
| 극성 표면적 | 0 |
|---|---|
| 수소 결합 공여자 수 | 0 |
| 수소 결합 수용자 수 | 2 |
| 회전 가능 결합 수 | 0 |
| 무거운 원자 수 | 3 |
| 형식 전하 | 0 |
| 복잡도 | 2.8 |
| 녹는점 | decomposes at ~25℃ [KIR78] |
| 밀도 | (calc) 3.24 |
| 용해도 | reacts with H2O |
| 물리적 상태 | 무색의 정사각형 결정 |
| 색상 | colorless tetragonal crystals, crystalline |
| EPA | Krypton fluoride (KrF2) (13773-81-4) |
화학적 성질
colorless solid; decomposes rapidly at room temp; tetr, a=0.6533 nm, c=0.5831 nm; vapor pressure at 0°C is 29mm Hg; thermodynamically unstable, can be stored at 78°C; prepared by electrical discharge of Kr and F2 at 183°C; used in certain types of electric light bulbs [MER06] [KIR78] [COT88]
안전 및 규제
| TSCA 등재 상태 | TSCA listed |
|---|---|
| 기존화학 물질 | KE-21800 |
용도
용도
As gas filler in special purpose electric bulbs. To initiate and sustain the arc in metal-vapor discharge tubes, such as mercury and sodium vapor lamps. To determine surface areas of fine solids by adsorption techniques.
제조 및 합성 방법
제조 방법
Krypton difluoride may be prepared by the reaction of krypton with fluorine in an electric discharge at low pressure and liquid oxygen temperature. Also it may be made by irradiating krypton with ultraviolet rays in a fluorine—argon gas mixture at liquid helium temperature (-196°F). Kr + F2 → KrF2 The product can be stored at -78°C without decomposition.