四碘化碲 | 7790-48-9

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 类金属盐
• 中文名称: 四碘化碲
• 中文别名: 碘化碲(IV)；碘化碲
• 英文名称: tellurium(IV) iodide
• 英文别名: tellurium iodide；Tellurium tetraiodide
• CAS: 7790-48-9
• 化学式: I₄Te
• 分子量: 635.218
• InChiKey: XCOKHDCPVWVFKS-UHFFFAOYSA-N

物化性质

• 熔点：
  280°C
• 密度：
  5.05 g/mL at 25 °C(lit.)
• 溶解度：
  与H2O反应；微溶于丙酮
• 暴露限值：
  ACGIH: TWA 0.1 mg/m3NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3
• 稳定性/保质期：

  如果遵照规格使用和储存，则不会分解。避免接触水分或潮湿环境。常温下即使在潮湿空气中也稳定，但加热时会分解出碘。封管中的熔点为280℃，常压下当温度高于118℃时即开始升华并部分分解。可溶于氢碘酸，稍溶于丙酮和乙醇。在冷水中微微水解，加热则水解迅速。

计算性质

• 辛醇/水分配系数(LogP)：
  3.16
• 重原子数：
  5
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

ADMET

毒理性

• 副作用

Dermatotoxin - 皮肤烧伤。

Dermatotoxin - Skin burns.

来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

安全信息

• TSCA：
  Yes
• 危险等级：
  8
• 安全说明：
  S22,S26,S27,S36/37/39,S45
• 危险品运输编号：
  UN 3260 8/PG 2
• WGK Germany：
  3
• 危险类别：
  8
• 危险品标志：
  C
• 危险类别码：
  R20/21/22,R34
• 包装等级：
  II
• 储存条件：
  保持贮藏器密封，并将其放入一个紧密封装的容器中。存储时，请确保放置在阴凉、干燥的地方。

SDS

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Section 1: Product Identification
Chemical Name: Tellurium (IV) iodide (99.9%-Te)
CAS Registry Number: 7790-48-9
Formula: TeI4
EINECS Number: 232-210-5
Chemical Family: metal halide
Synonym: Tellurium tetraiodide.

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Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title Compound 7790-48-9 100% 0.1mg/m3 (as Te) 0.1mg/m3 (as Te)

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Section 3: Hazards Identification
Causes severe skin, eye and respiratory tract irritation with cough, breathing difficulty, nausea and vomiting.
Emergency Overview:
Prolonged exposure may produce a mild toxic syndrome known as iodism.
Primary Routes of Exposure: Contact with skin and eyes. Inhalation of dust.
Eye Contact: Causes redness, pain, and blurred vision. Splashes from solutions may cause eye damage.
Skin Contact: Causes severe irritation, ulcerations, itching, pimples, boils, hives, blisters and skin burns.
Inhalation: Causes irritation to the respiratory tract. Symptoms may include coughing and shortness of breath.
Ingestion: May cause severe irritation to the gastrointestinal tract with abdominal pain, nausea, and vomiting.
May cause coughing, nausea, and vomiting. Skin and eye contact will cause severe irritation. Tellurium may
Acute Health Affects:
cause garlic odor of breath, metallic taste, sleepiness, headache and nausea.
Chronic ingestion of iodides may produce iodism. Symptoms include skin rash, running nose, headache and
Chronic Health Affects: irritation of mucous membranes. Prolonged exposure to tellurium may cause drowsiness and loss of appetite.
NTP: No
IARC: No
OSHA: No

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SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
Skin Exposure:
irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.

---

SECTION 5: Fire Fighting Measures
Flash Point: not applicable
Autoignition Temperature: none
Explosion Limits: none
Extinguishing Medium: None. Material is non-flammable.
Special Fire Fighting Procedures: No special fire fighting procedures required.
Hazardous Combustion and none
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

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SECTION 6: Accidental Release Measures
Small spills can be mixed with powdered sodium bicarbonate, lime, or calcium carbonate and swept up. Avoid
Spill and Leak Procedures:
raising dust.

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SECTION 7: Handling and Storage
Store solid in a tightly sealed container away from moisture. Handle in a fume hood under a dry atmosphere of
Handling and Storage:
air or nitrogen. Prolonged exposure to the atmosphere may degrade the product.

---

SECTION 8: Exposure Controls and Personal Protection
Eye Protection: Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection: Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove.
Ventilation: Material may form a fine dust. If possible, handle the material in an efficient fume hood.
If in form of fine dust and ventilation is not available a respirator should be worn. The use of respirators
Respirator:
requires a Respirator Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation: Material may form a fine dust. If possible, handle the material in an efficient fume hood.
Additional Protection: No additional protection required.

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SECTION 9: Physical and Chemical Properties
Color and Form: -4 mesh gran.
Molecular Weight: 635.22
Melting Point: 280°
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: 5.403
Odor: none
Solubility in Water: slightly soluble

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SECTION 10: Stability and Reactivity
Stability: moisture sensitive
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: contact with moisture
Incompatibility: active metals
Decomposition Products: none

---

SECTION 11: Toxicological Information
RTECS Data: No information available in the RTECS files.
Carcinogenic Effects: no data
Mutagenic Effects: no data
Tetratogenic Effects: no data

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SECTION 12: Ecological Information
Ecological Information: No information available

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SECTION 13: Disposal Considerations
Disposal: Dispose of according to local, state and federal regulations.

---

SECTION 14: Transportation
Shipping Name (CFR): Non-hazardous
Hazard Class (CFR): NA
Additional Hazard Class (CFR): NA
Packaging Group (CFR): NA
UN ID Number (CFR): NA
Shipping Name (IATA): Non-hazardous
Hazard Class (IATA): NA
Additional Hazard Class (IATA): NA
Packaging Group (IATA): NA
UN ID Number (IATA): NA

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SECTION 15: Regulatory Information
TSCA: Listed in the TSCA inventory
SARA (Title 313): Not reportable under SARA 313.
Second Ingredient: none

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SECTION 16 - ADDITIONAL INFORMATION
N/A

制备方法与用途

制备方法

1. 使用原碲酸与氢碘酸反应即可生成四碘化碲。在室温下将高浓度的原碲酸Te(OH)₆与稍稍过量的浓氢碘酸（相对密度为2.00）混合，会立刻有灰色的四碘化碲沉淀出来。使用玻璃砂芯漏斗进行过滤，并尽量将其压干。常温下蒸发浓缩母液，还可以得到相当多的产物。

将所得的结晶产物干燥后，再用纯的四氯化碳洗涤以除去其中的碘。在洗涤时可以将结晶体在四氯化碳中弄碎，并不断更换洗涤液体直至洗涤液不再有颜色为止。最后进行干燥并密封保存。

合成制备方法

1. 使用原碲酸与氢碘酸反应即可生成四碘化碲。在室温下将高浓度的原碲酸Te(OH)₆与稍稍过量的浓氢碘酸（相对密度为2.00）混合，会立刻有灰色的四碘化碲沉淀出来。使用玻璃砂芯漏斗进行过滤，并尽量将其压干。常温下蒸发浓缩母液，还可以得到相当多的产物。

将所得的结晶产物干燥后，再用纯的四氯化碳洗涤以除去其中的碘。在洗涤时可以将结晶体在四氯化碳中弄碎，并不断更换洗涤液体直至洗涤液不再有颜色为止。最后进行干燥并密封保存。

用途简介

实验用

用途

实验用

反应信息

• 作为反应物：
  描述：

  四碘化碲 以 水 为溶剂， 生成 氢碘酸
  参考文献：
  名称：

  Berzelius, J. J., Annales de Chimie et de Physique, 1835, vol. 58, p. 273 - 273

  摘要：

  DOI：
• 作为产物：
  描述：

  tellurium(IV)-iodide * hydrogeniodide * 8 water 以 neat (no solvent) 为溶剂， 生成 四碘化碲
  参考文献：
  名称：

  Metzner, R., Annales de Chimie et de Physique, 1898, vol. 15, p. 238 - 238

  摘要：

  DOI：
• 作为试剂：
  描述：

  5-bromo-6-(diisopropylphosphino)acenaphthene 在 正丁基锂 、 四碘化碲 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 1.0h， 生成 、
  参考文献：
  名称：

  Intramolecularly Group 15 Stabilized Aryltellurenyl Halides and Triflates

  摘要：

  The preparation of a series of functionalized pen-substituted acenaphthyl compounds 6-Ph2E-Ace-5-Br (1, E = As; 2, E = Sb), 6-Ph2As-Ace-5-TeMes (3), 5-I-Ace6-TeMes (4), 6-Ph2Sb-Ace-5-TeMes (5), (6-Ph2P-Ace-5)(2)Te (6), [6-R2E-Ace-5-Te]X (7, E = P, R = Ph, X = Cl; 8, E = P, R = i-Pr, X = Cl; 9, E = P, R = i-Pr, X = Br; 10, E = P, R = i-Pr, X = I; 11, E = P, R = i-Pr, X = 1/2 (TeI6); 12, E = P, R = i-Pr, X = 13; 13, E = P, R = Ph, X = O3SCF3; 14, E = As, R = Ph, X = O3SCF3; 15, E = Sb, R = Ph, X = 03SCF3), and [6-PhSbAce-5-TeMes]O3SCF3 (16) is reported (Ace = acenaphthyl). The synthesis of 7-15 was achieved either by a salt metathesis reaction of 5-i-Pr2P-Ace-6-Li with TeCl2 center dot TMTU (8), TeBr2 center dot TMTU (9), and Tell. (10 + 11) or by the aryl cleavage reaction of 6-R2E-Ace-5-TeMes (E = P, As, Sb; R = Ph, i-Pr) with HgCl2 (7), I-2 (12), and HO3SCF3 (13-15). The reaction of 5 with triflic acid gave also rise to the formation of [6-PhSb-Ace-5-TeMes] O3SCF3 (16). All compounds have been characterized by multinuclear NMR spectroscopy and single-crystal X-ray diffraction. Complementary DFT studies including relaxed potential energy scans (PES) and subsequent topological analysis of the resulting electron and pair densities according to the AIM and ELI-D partitioning schemes were performed for the aryltellurenyl chlorides [6-Ph2P-Ace-S-Te]Cl, [8-Me2N-Nap-1-Te]Cl, and [8-Me2P-Nap-1-Te]Cl in the gas phase and in MeCN solution, whereby the Te-Cl distances were systematically varied. The same analyses were carried out for the fully optimized [6-R2E-Ace-5-Te](+) cations (E = P, As, Sb) and compared to those of the previously studied intermolecularly stabilized [R(3)ETeMes](+) cations (E = P, As, Sb).

  DOI：

  10.1021/acs.organomet.5b00813

文献信息

• CH–NH Tautomerism in the Products of the Reactions of the Methanide [HC(PPh₂NSiMe₃)₂]⁻ with Pnictogen and Tellurium Iodides
  作者：Ramalingam Thirumoorthi、Tristram Chivers、Chris Gendy、Ignacio Vargas-Baca

  DOI：10.1021/om400649c

  日期：2013.10.14

  the covalent radii for M and C in the case of the group 15 metalloids but significantly shorter for M = Te. The arsenic derivative [t-AsI2}2] is monomeric in the solid state, with As–I distances that differ by ca. 0.55 Å, whereas the antimony analogues [t-SbI2}2] and [c-SbI2}2] are dimeric through bridging iodide ligands and the disparity in Sb–I distances of the SbI2 units is 0.10 and 0.33 Å, respectively

  K [HC（PPh 2 NSiMe 3）2 ]（K [ 1 ]）和MI 3（M = As，Sb）或TeI 4的反应以配合物[MI n } C（PPh 2 NSiMe 3）（PPh 2 NHSiMe 3）}]（M n =反式-AsI 2，反式或顺式-SbI 2，TeI 3），其特征在于配体[C（PPh 2 NSiMe 3）（PPh 2 NHSiMe 3） ] -（2）。该阴离子是[HC（PPh 2 NSiMe 3）2 ] -的NH互变异构体，是通过1,3-氢转移正式生成的，从而形成配体被N，C螯合为主金属准金属的配合物中央。在第15组准金属的情况下，MC距离比M和C的共价半径之和稍长，而对于M = Te则明显短一些。砷衍生物[ t -AsI 2 } 2 ]在固态时是单体的，As–I距离相差约3。0.55Å ，而锑类似物[ t -SbI 2 } 2 ]和[ c -SbI2 } 2 ]
• AgI alloying in SnTe boosts the thermoelectric performance via simultaneous valence band convergence and carrier concentration optimization
  作者：Ananya Banik、Kanishka Biswas

  DOI：10.1016/j.jssc.2016.02.012

  日期：2016.10

  was earlier assumed to be a poor thermoelectric material due to excess p-type carrier concentration and large energy separation between light and heavy hole valence bands. Here, we report the enhancement of the thermoelectric performance of p-type SnTe by Ag and I co-doping. AgI (1–6 mol%) alloying in SnTe modulates its electronic structure by increasing the band gap of SnTe, which results in decrease

  摘要 SnTe 是一种 PbTe 的无铅类似物，由于 p 型载流子浓度过高以及轻重空穴价带之间的能量分离大，较早被认为是一种较差的热电材料。在这里，我们报告了 Ag 和 I 共掺杂增强了 p 型 SnTe 的热电性能。SnTe 中的 AgI (1-6 mol%) 合金化通过增加 SnTe 的带隙来调节其电子结构，这导致其轻、重空穴价带之间的能量分离减小，从而引起价带收敛。此外，SnTe 的 Te 亚晶格中的碘掺杂降低了过量的 p 型载流子浓度。由于空穴浓度显着降低和轻重空穴价带之间的能量分离减少，对于 Sn1-xAgxTe1-xIx 样品，在 600-900 K 的温度范围内实现了塞贝克系数的显着提高。在 860 K 时，在 p 型 Sn0.95Ag0.05Te0.95I0.05 的高质量晶锭中实现了约 1.05 的最大热电品质因数 zT。
• Ionic-liquid-based synthesis of tellurium–rhenium carbonyls with specific reaction control
  作者：Silke Wolf、Claus Feldmann

  DOI：10.1039/c9dt01897b

  日期：——

  [BMIm][Te2I4(μ-I)2Re(CO)4] (2) with the anion [Te2I4(μ-I)2Re(CO)4]-. At a [BMIm]Cl to AlCl3 ratio of 1 : 3, Te3I2(μ-I)3(μ3-I)}Re(CO)3 (3) was realized with a Te3I3 ring and μ3-coordinating iodine. Finally, [BMIm][(Te2)3Re(CO)3}2Re(CO)4}3] (4) was prepared in [BMIm][OTf] (OTf: triflate) and contains the ufosan-like anion [(Te2)3Re(CO)3}2Re(CO)4}3]- with three Te22- and two Re(CO)3+ units that establish

  新型碲化碲rh羰基化合物[TeI2Re（CO）5] [AlCl4]（1），[BMIm] [Te2I4（μ-I）2Re（CO）4]（2），Te3I2（μ-I）3（μ3- I）} Re（CO）3（3）和[BMIm] [（Te2）3 Re（CO）3} 2 Re（CO）4} 3]（4）通过使TeI4和Re2（CO）反应制备10在离子液体（ILs）中。[TeI2Re（CO）5] [AlCl4]（1）是在[BMIm] Cl（BMIm：1-丁基-3-甲基咪唑鎓）和AlCl3（比例：1：1）的混合物中获得的，并包含[TeI2Re（CO） ）5] +阳离子。增加 （[BMIm] Cl： = 1：2）的量会导致[BMIm] [Te2I4（μ-I）2Re（CO）4]（2）中的阴离子为[Te2I4（μ-I）2Re（ CO）4]-。在[BMIm] Cl与 的比例为1：3的情况下，使用
• Stabilization of Decatellurium Molecules in Isolated and Concatenated Clusters
  作者：Anja Günther、Anna Isaeva、Michael Ruck

  DOI：10.1002/zaac.201200430

  日期：2013.2

  molecular cluster compounds (Te10)[M(TeX4)(TeX3)]2 (M/X = Rh/Cl (1), Ir/Br (2)), (Te10)[Ru(TeI4)(TeI2)]2 (3), (Te10)[M(TeI4)(TeI2)]2(TeI4)(Te2I2) (M = Rh (4), Ir (5)) as well as the one-dimensional cluster polymer (Te10I2)[Ir(TeI4)]2(Te4)I2 (6) were synthesized by melting reactions of an electron-rich transition metal M (M = Ru, Rh, Ir) with tellurium and TeX4 (X = Cl, Br, I). X-ray diffraction on single-crystals

  分子簇化合物 (Te10)[M(TeX4)(TeX3)]2 (M/X = Rh/Cl (1), Ir/Br (2)), (Te10)[Ru(TeI4) 的黑色闪亮晶体(TeI2)]2 (3), (Te10)[M(TeI4)(TeI2)]2(TeI4)(Te2I2) (M = Rh (4), Ir (5)) 以及一维簇状聚合物(Te10I2)[Ir(TeI4)]2(Te4)I2 (6) 是通过富电子过渡金属 M（M = Ru、Rh、Ir）与碲和 TeX4（X = Cl、Br、一世）。单晶的 X 射线衍射表明化合物在三斜空间群类型 P. 4 和 5 中结晶，显示其结构的 [3+1] 维调制。所有化合物都含有双核复合物，其具有中心 μ-η4:η4-桥连 Te10 单元和末端卤化碲酸盐 (II) 基团。每个过渡金属阳离子都处于由六个碲原子略微扭曲的八面体配位中；两个 [MTe6] 八面体共用一条边。由于碲原子作为电子对供体，亲电
• Phase equilibriums and thermodynamic properties of the system Bi–Te–I
  作者：M.B. Babanly、J.-C. Tedenac、Z.S. Aliyev、D.V. Balitsky

  DOI：10.1016/j.jallcom.2009.02.139

  日期：2009.7

  TeI 1.25 were confirmed, the position of phase areas and their relationships was established. Areas of primary crystallization fields, types and coordinates of the non- and mono-variant equilibriums were determined. The measurements of EMF have allowed calculation of partial molar functions ( Δ G ¯ , Δ H ¯ , Δ S ¯ ) of bismuth in alloys, standard thermodynamic functions of formation and standard entropies

  摘要 通过差热分析和 X 射线衍射方法以及 (-) Bi (s) | 型浓度链的电动势 (EMF) 的测量，研究了 Bi-Te-I 系统。液态电解导体，Bi 3+ | (Bi–Te–I) (s) (+) 在 300–400 K 的温度范围内。构建了 300 K 相图的一系列多温截面和等温截面，以及液相线表面的投影。证实了早先指示的三元化合物BiTeI、Bi 2 TeI 和Bi 4 TeI 1.25 ，确定了相区的位置及其关系。确定了初级结晶场的面积、非和单变平衡的类型和坐标。EMF的测量允许计算合金中铋的偏摩尔函数（ΔG¯，ΔH¯，ΔS¯），