SnCl4 | 141497-23-6

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物
• 英文名称: SnCl4
• 英文别名: (119)-stannic chloride；tin tetrachloride；stannic chloride；tin(IV) chloride
• CAS: 141497-23-6
• 化学式: Cl₄Sn
• 分子量: 260.812
• InChiKey: HPGGPRDJHPYFRM-AZCDSDHNSA-J

计算性质

• 辛醇/水分配系数(LogP)：
  2.38
• 重原子数：
  5.0
• 可旋转键数：
  0.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  SnCl4 、 水 、 chromium(lll) acetate 在 NH₃ 作用下， 以 氨 为溶剂， 生成
  参考文献：
  名称：

  Caracterisation par spectrometrie mössbauer de la repartition des ions etain dans le sesquioxyde de chrome utilise en tant que catalyseur pour oxydation de l'oxyde de carbone

  摘要：

  Mossbauer spectra of four Cr2O3 samples corresponding to the same chemical composition (Crl.9934Sn0.006603) but with different tin contents in the grain surface layer have been investigated, the concentration of surface located Sn4+ ions being determined from ESCA data. For all samples Sn-119 Mossbauer measurements reveal at low temperature magnetic hyperfine interactions induced by the spin density transfer from neighboring Cr3+ ions. The spectra have been analyzed by the Heese and Rubartsch method. The procedure permitting to determine the distributions of the magnetic hyperfine fields acting on Mossbauer nuclei is shown to be sensitive enough to account for the behavior of Sn4+ ions during calcination of Cr2O3 in various experimental conditions. The samples characterized by Mossbauer spectroscopy have been tested as catalysts of the oxidation of CO by 02. The presence of Sn4+ ions on the surface is found to be responsible for a significant increase of the apparent activation energy of the reaction. This effect is interpreted as a result of the reactivity decrease of the surface oxygen species located on the O2- vacancies surrounded by both Cr3+ and Sn4+ ions, as compared with the reactivity of those only related to coordinately unsaturated Cr3+ ions.

  DOI：

  10.1016/0025-5408(93)90087-t

文献信息

• Electronic state and local surrounding of 119Sn in calcium-substituted holmium orthochromites
  作者：E.M. Mezhuev、M.I. Afanasov、D.S. Larionov、A. Wattiaux、C. Labrugère、P.B. Fabrichnyi

  DOI：10.1134/s0036023617100126

  日期：2017.10

  The influence of Ca2+ doped into the holmium sublattice on the magnetically active surrounding of Sn4+ ions located in the chromium sublattice of Ho1-x Ca (x) Cr0.997Sn0.003O3 (x = 0, 0.003, and 0.1) compounds was studied by Sn-119 Mossbauer spectroscopy. At concentrations [Ca] = [Sn] = 0.3 mol %, an increase was observed in the spectral contribution of Sn4+ sites, having the full number of nearest-neighbor Cr(3+)cations (n = 6), where they perceived a magnetic field H(Sn)(4.2 K) = 82 kOe, compared to the contribution of the relevant sites in the undoped chromite (x = 0). This observation was interpreted as resulting from a reduced probability of appearance of Cr3+ vacancies in the nearest surrounding of heterovalent Sn4+ ions. For x = 0.1, on the contrary, the Sn-119 spectrum revealed a reduced contribution from the Sn4+ sites with n = 6. This evolution is shown not to be due neither to the appearance of Cr4+ nor Cr6+ ions in the nearest neighborhood of Sn4+ in the chromium sublattice to balance the charge deficiency of the Ca2+ ions doped into the holmium sublattice. This allowed us to suggest that the observed effect was due to the onset of Sn4+ segregations in the structure of Ho0.9Ca0.1Cr0.997Sn0.003O3, which contained a far greater amount of Ca2+ ions whose charge deficiency was balanced mostly by Cr4+ formation. Studies of samples that were prepared under a hydrogen atmosphere revealed the reduction of Sn4+ to the oxidation state +2, with the concomitant stabilization of the formed Sn2+ ions on crystallite surfaces on sites having low coordination numbers.
• Mössbauer Characterization of Electronic States and Local Surroundings of 57Fe and 119Sn in Ca-Substituted Lutetium Orthoferrites Lu1 – xCaxFe0.997Sn0.003O3
  作者：E. M. Mezhuev、M. I. Afanasov、D. S. Larionov、M. V. Korolenko、P. B. Fabrichnyi

  DOI：10.1134/s003602361812015x

  日期：2018.12

  The electronic state and local surrounding of both iron ions and tin dopant ions in Lu1 - xCaxFe0.997Sn0.003O3 (x = 0.003; 0.1; 0.2) compounds were studied by Fe-57 and Sn-119 Mossbauer spectroscopy. The analysis of Fe-57 spectra showed that in the Lu0.8Ca0.2Fe0.997Sn0.003O3 sample, obtained by air annealing, the charge deficit created by the substitution of Lu3+ by Ca2+ was compensated by the partial transition of Fe3+ to the +5 oxidation state. With a further increase in the value of x (in the Lu0.8Ca0.2Fe0.997Sn0.003O3 compound) a mixed compensation mechanism appeared, including the formation of oxygen vacancies VO in addition to Fe5+ ions. Annealing the sample with x = 0.1 in H-2 at 400 degrees C led to the reduction of Fe5+ to Fe3+ and, accordingly, to the pure vacancy mechanism of the Ca2+ charge deficit compensation. The analysis of Sn-119 spectra showed that the substitution of Lu3+ by Ca2+ in the Lu0.8Ca0.2Fe0.997Sn0.003O3 structure led to the increase in the value of the magnetic field H, probed by some Sn4+ ions, as compared to the value of H> observed in the case of Lu0.997Ca0.003Fe0.997Sn0.003O3. This change can be explained by a local increase in the angle of the indirect exchange interaction in the chain Fe3+-?(2)--Sn4+, reflecting the presence of Ca2+ cation, larger than that of Lu3+, in the vicinity of Sn4+ ion.