Lanthanum(3+);carbonate;fluoride | 54509-98-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 有机碳酸及其衍生物
• 英文名称: Lanthanum(3+);carbonate;fluoride
• CAS: 54509-98-7
• 化学式: CO₃*F*La
• 分子量: 217.913
• InChiKey: KHRXXLPWVRWQDP-UHFFFAOYSA-K

计算性质

• 辛醇/水分配系数(LogP)：
  -5.44
• 重原子数：
  6.0
• 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：
  63.19
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  Lanthanum(3+);carbonate;fluoride 以 neat (no solvent, solid phase) 为溶剂， 生成 lanthanum oxofluoride
  参考文献：
  名称：

  用于块状和 Eu3+ 掺杂样品的氟碳铈矿型 LaF[CO3] 的简便合成及其热分解成 LaOF

  摘要：

  具有 MOF 组成（M = La-Lu）的稀土金属 (III) 氧化物氟化物似乎通过用三价镧系元素阳离子掺杂这些材料为发光应用提供了有希望的主晶格。不幸的是，没有简单可行的方法可以用经典的固态化学反应合成纯相质量的化合物。然而，通过使用稀土金属 (III) 氟化碳酸盐 MF[CO3] 作为具有氟碳铈矿型结构结晶的溶液型前体材料，现在可以通过温和的热分解轻松获得。本文给出了合成细节、相纯度和含氧碳酸根阴离子 [CO3]2 存在的研究——通过红外测量以及 X 射线粉末衍射数据证明，以块状 LaF[CO3] 和 Eu3+ 为例-掺杂的样品。

  DOI：

  10.1002/ejic.200800931
• 作为产物：
  描述：

  氟化镧 、 lithium carbonate 以 neat (no solvent, solid phase) 为溶剂， 生成 Lanthanum(3+);carbonate;fluoride
  参考文献：
  名称：

  三元碳酸酯的改进合成：实例 LiLa(CO3)2 和 La(CO3)F

  摘要：

  先前在超临界 CO2 压力条件下获得的三元碳酸酯 LiLa(CO3)2 是通过一种新的有效合成方法制备的。Li2(CO3) 和 LaCl3 的 2:1 摩尔混合物在硅胶管中在 400 °C 下反应。LiLa(CO3)2 的晶体结构是从 X 射线单晶数据中提炼出来的，可能与氯化铯类型排列有关，其中 Li+ 和 La3+ 离子占据铯位置，(CO3)2– 离子占据所有立方空隙. 铈掺杂样品 (LiLa(CO3)2:Ce) 显示蓝色发光。矿物氟碳铈矿是通过相同的制备方法合成的，不同的是 LaF3 和 Li2(CO3) 的 1:1 摩尔混合物在 450 °C 下反应。

  DOI：

  10.1002/zaac.201000198

文献信息

• Dissolution of the Rare‐Earth Mineral Bastnaesite by Acidic Amide Ionic Liquid for Recovery of Critical Materials
  作者：John W. Freiderich、Joseph J. Stankovich、Huimin Luo、Sheng Dai、Bruce A. Moyer

  DOI：10.1002/ejic.201500509

  日期：2015.9

  As such, the recovery of rare earths (REs) from minerals such as bastnaesite remains important for modern times. As the light lanthanides (La–Nd) constitute the majority (typically >98.7 %) of the REs in bastnaesite with the heavy REs (Sm–Lu) contributing the remainder (approximately 1.3 %), an enrichment of heavier REs may serve as an effective means of assisting rare-earth recovery. Such an extractive

  稀土元素是清洁可持续能源和计算机、通信和交通等现代技术的基石。因此，从氟碳铈矿等矿物中回收稀土 (RE) 对现代仍然很重要。由于轻镧系元素 (La–Nd) 构成氟碳铈矿中稀土元素的大部分（通常 >98.7%），而重稀土元素（Sm–Lu）贡献其余部分（约 1.3%），因此重稀土元素的富集可作为协助稀土回收的有效手段。这种涉及离子液体 (IL) 的提取冶金过程导致重稀土的富集接近一个数量级。酸性IL N，IL 1-丁基-3-甲基咪唑鎓双（三氟甲基磺酰基）酰亚胺（BMIM+NTf2-）中的 N-二甲基乙脒双（三氟甲基磺酰基）酰亚胺（DMAH+NTf2-）溶解泡沫浮选氟碳铈矿、合成氟碳铈矿类似物（RECO3F）和 RE2O3， RE2(CO3)3 矿物。针对该 IL 系统提出了氟碳铈矿溶解的整体反应。该 IL 系统可以为氟碳铈矿泡沫浮选精矿提供更大的稀土分离方案的初始阶段。
• LaOF : Eu3+ nanocrystals: hydrothermal synthesis, white and color-tuning emission properties
  作者：Mengmeng Shang、Guogang Li、Xiaojiao Kang、Dongmei Yang、Dongling Geng、Chong Peng、Ziyong Cheng、Houzhou Lian、Jun Lin

  DOI：10.1039/c2dt30082f

  日期：——

  Uniform LaOF and LaOF : Eu3+ nanocrystals of the γ-form have been successfully synthesized under mild conditions via a facile hydrothermal method followed a heat treatment of their bastnaesite-type precursor (LaCO3F). The synthetic details, investigations into the phase purity and the presence of the oxocarbonate anion CO32– proven by IR measurements and EDX, as well as X-ray powder diffraction data, are given. Photoluminescence (PL) and cathodoluminescence (CL) spectra were utilized to characterize the luminescence properties of the LaCO3F : Eu3+ and LaOF : Eu3+ samples. Under ultraviolet light excitation, the LaCO3F : Eu3+ precursor shows an orange emission of Eu3+ (dominated by 5D0 → 7F1), while the product of heat treatment, LaOF : Eu3+, shows the characteristic emissions of Eu3+ (5DJ → 7FJ′J, J′ = 0, 1, 2, 3 transitions). Under the excitation of UV and low-voltage electron beams, the emission color (including white) of LaOF : Eu3+ can be tuned by adjusting the doping concentration of Eu3+. The corresponding luminescence mechanisms have been discussed in detail.

  均匀的 LaOF 和 LaOF−:−Eu3+ γ 型纳米晶体已在温和条件下通过简单的水热方法成功合成，然后对其氟碳铈矿型前体 (LaCO3F) 进行热处理。给出了合成细节、对相纯度的研究以及通过红外测量和 EDX 证明的碳酸氧阴离子 CO32– 的存在，以及 X 射线粉末衍射数据。利用光致发光（PL）和阴极发光（CL）光谱来表征LaCO3F-:-Eu3+和LaOF-:-Eu3+样品的发光特性。在紫外光激发下，LaCO3F-:-Eu3+前体显示出Eu3+的橙色发射（以5D0-7F1为主），而热处理产物LaOF-:-Eu3+则显示出特征Eu3+ 的排放（5DJ → 7FJ → J，J → = 0, 1, 2, 3 跃迁）。在紫外和低压电子束的激发下，LaOF-:-Eu3+的发射颜色（包括白光）可以通过调节Eu3+的掺杂浓度来调节。相应的发光机制已被详细讨论。
• Synthesis of nano-sized lanthanum oxyfluoride powders by mechanochemical processing
  作者：Jaeryeong Lee、Qiwu Zhang、Fumio Saito

  DOI：10.1016/s0925-8388(02)00837-x

  日期：2003.1

  Lanthanum oxide (La2O3) was subjected to grinding with polytetrafluoroethylene (PTFE, (CF2CF2)(n)) in air using a planetary mill followed by thermal treatment to synthesize lanthanum oxyfluoride ultra-fine particles. The grinding operation causes mechanochemical (MC) reaction between the two materials. The MC reaction is almost finished by 240 min, and the products ground for 240 min or more are composed of LaOF, amorphous La(CO3)F and amorphous carbon (C). Heating this MC reaction product at 600 degreesC enables us to eliminate amorphous C and decompose La(CO3)F into LaOF, so that pure LaOF material can be obtained as the final product. The average particle size of the final product (purified LaOF) is around 10 nm. (C) 2002 Elsevier Science B.V. All rights reserved.
• Surfactant-Free Synthesis, Luminescent Properties, and Drug-Release Properties of LaF₃ and LaCO₃F Hollow Microspheres
  作者：Ruichan Lv、Shili Gai、Yunlu Dai、Fei He、Na Niu、Piaoping Yang

  DOI：10.1021/ic402468k

  日期：2014.1.21

  Uniform LaF3 and LaCO3F hollow microspheres were successfully synthesized through a surfactant-free route by employing La(OH)CO3 colloidal microspheres as a sacrificial template and NaBF4 as the fluorine source. The synthetic process consists of two steps: the preparation of a La(OH)CO3 precursor via a facile urea-based precipitation and the following formation of lanthanide fluoride hollow microspheres under aqueous conditions at low temperature (50 degrees C) and short reaction time (3 h), without using any surfactant and catalyst. The formation of hollow spheres with controlled size can be assigned to the Kirkendall effect. It is found that the phase and structure of the products can be simply tuned by changing the pH values of the solution. Time-dependent experiments were employed to study the possible formation process. N-2 adsorption/desorption results indicate the mesoporous nature of LaF3 hollow spheres. Yb3+/Er3+ (Ho3+) and Yb3+/Tm3+-doped LaF3 hollow spheres exhibit characteristic up-conversion (UC) emissions of Er3+ (Ho3+) and Tm3+ under 980 nm laser-diode excitation, and Ce3+/Tb3+-doped LaF3 and LaCO3F emit bright yellow-green and near-white light under UV irradiation, respectively. In particular, LaF3:Yb/Er and LaCO3F:Ce/Tb hollow microspheres exhibit obvious sustained and pH-dependent doxorubicin release properties. The luminescent properties of the carriers allow them to be tracked or monitored during the release or therapy process, suggesting their high potential in the biomedical field.
• Mercier, N.; Leblanc, M., European Journal of Solid State and Inorganic Chemistry
  作者：Mercier, N.、Leblanc, M.

  DOI：——

  日期：——