praseodymium carbonate hydrate

• 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: praseodymium carbonate hydrate
• 英文别名: praseodymium carbonate octahydrate；praseodimium carbonate octahydrate；praseodymium(III) carbonate octahydrate；Praseodymium(3+);carbonate;hydrate
• 化学式: 3CO₃*8H₂O*2Pr
• 分子量: 605.965
• InChiKey: VBQVEUHHRLCFDT-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  -3.27
• 重原子数：
  6
• 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：
  64.2
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  praseodymium carbonate hydrate 以 neat (no solvent) 为溶剂， 生成 碳酸镨
  参考文献：
  名称：

  摘要：

  The present research describes the synthesis of the citrate of Pr by the amorphous citrate method and the study of the thermal decomposition of the complex in air, nitrogen and oxygen, in order to identify the final compounds and the intermediates obtained during the decomposition. A special study was dedicated to the thermal decomposition of the Pr-carbonate octahydrate used in the synthesis as starting material. The thermal decomposition of the lanthanide citrate was investigated mainly by thermogravimetry, differential thermal analysis, X-ray diffraction and infrared spectroscopy. The results showed that the complex decomposes to PrO1.83 with formation of an intermediate oxycarbonate compound in air or directly to the oxide in oxygen; in nitrogen atmosphere, amorphous products were obtained after thermal decomposition.

  DOI：

  10.1023/a:1011561626153
• 作为产物：
  描述：

  praseodymium(trichloroacetate)3(hydrate) 、 水 以 水 为溶剂， 生成 praseodymium carbonate hydrate
  参考文献：
  名称：

  羟基碳酸carbonate和水合碳酸the的分解研究

  摘要：

  DOI：

  10.1016/0022-4596(91)90348-l

文献信息

• Thermal expansion behavior and high-temperature electrical conductivity of A2−A ′Cu1−Co O4± (A = La, Pr; A′ = Pr, Sr) oxides with the K2NiF4-type structure
  作者：G.N. Mazo、S.M. Kazakov、L.M. Kolchina、A.V. Morozov、S.Ya. Istomin、N.V. Lyskov、A.A. Gippius、E.V. Antipov

  DOI：10.1016/j.jallcom.2015.03.081

  日期：2015.8

  Pr-containing cuprates with the K 2 NiF 4 -type structure have been prepared by annealing at 1273 K, 48–90 h in air: with Cu on B-site only in formal oxidation state +2 (La 2− x Pr x CuO 4 , x = 0.1; 0.2; 0.4) ( i ), with partial replacement of Cu 2+ by small (La 2− x Pr x Cu 1− y Co y O 4± δ , 0.1 ⩽ x ⩽ 0.5; y = 0.05; 0.1) ( ii ) and large (Pr 2− x Sr x Cu 1− x Co x O 4± δ , x = 0.5; 0.75) ( iii ) amount of

  摘要 通过在空气中于 1273 K、48-90 小时退火制备了三种不同组成系列的具有 K 2 NiF 4 型结构的含 Pr 铜酸盐：在 B 位上只有形式氧化态 +2 (La 2− x Pr x CuO 4 , x = 0.1; 0.2; 0.4) ( i ), Cu 2+ 部分替换为小 (La 2− x Pr x Cu 1− y Co y O 4± δ , 0.1 ⩽ x ⩽ 0.5; y = 0.05; 0.1) ( ii ) 和大 (Pr 2− x Sr x Cu 1− x Co x O 4± δ , x = 0.5; 0.75) (iii) 钴量。与 La 2 CuO 4 相比，用 Co 部分替代 Cu，如在 La 2- x Pr x Cu 1- y Co y O 4± δ 中，导致热膨胀系数 (TEC) 增加。对于 Pr 2− x Sr x Cu 1− x Co x O 4± δ ，观察到沿四方晶胞的
• Tuning Intrinsic and Extrinsic Proton Conduction in Metal–Organic Frameworks by the Lanthanide Contraction
  作者：Norman E. Wong、Padmini Ramaswamy、Andrew S. Lee、Benjamin S. Gelfand、Kamila J. Bladek、Jared M. Taylor、Denis M. Spasyuk、George K. H. Shimizu

  DOI：10.1021/jacs.7b07987

  日期：2017.10.18

  Seven isomorphous lanthanide metal-organic frameworks in the PCMOF-5 family, [Ln(H5L)(H2O)n](H2O) (L = 1,2,4,5-tetrakis(phosphonomethyl)benzene, Ln = La, Ce, Pr, Nd, Sm, Eu, Gd) have been synthesized and characterized. This family contains 1-D water-filled channels lined with free hydrogen phosphonate groups and gives a very low activation energy pathway for proton transfer. The lanthanide contraction

  PCMOF-5 家族中的七种同晶镧系金属有机骨架，[Ln(H5L)(H2O)n](H2O)（L = 1,2,4,5-四（膦酰基甲基）苯，Ln = La，Ce， Pr、Nd、Sm、Eu、Gd）已被合成和表征。该系列包含内衬游离膦酸氢基团的一维充水通道，并为质子转移提供非常低的活化能途径。镧系元素收缩用于系统地改变晶胞尺寸并调整质子传导途径。晶体系列的 LeBail 拟合表明，沿通道的晶体学 a 轴可以以小于 0.02 Å 的增量变化，从而相应地缩短质子转移途径。La 和 Pr 复合物的质子电导率大约比该系列的其他成员高一个数量级（10-3 S cm-1 对 10-4 S cm-1）。该系列的高导电和低导电成员的单晶结构（La、Pr 代表高，Ce 代表低）证实结构相似性超出了晶胞参数，扩展到游离酸基团和包括水分子的位置。扫描电子显微镜显示，由于镧系元素变化引起的晶格应变效应，Ln 系列不同成员
• Synthesis, Crystal Structure, and Thermal Behavior of Pr(ClO3)3 · 2 H2O
  作者：Mathias S. Wickleder

  DOI：10.1002/(sici)1521-3749(199911)625:11<1771::aid-zaac1771>3.0.co;2-i

  日期：1999.11

  Single crystals of Pr(ClO3)3 · 2 H2O have been obtained from the reaction of Pr2(CO3)3 · x H2O and HClO3. The crystal structure (orthorhombic, P212121, Z = 4, a = 576.03(7), b = 1236.7(2), c = 1314.0(2) pm) contains Pr3+ ions coordinated by two H2O molecules and seven ClO3– groups. According to DTA/TG measurements, Pr(ClO3)3 · 2 H2O decomposes in a two step mechanism with Pr(ClO3)3 as an intermediate

  Pr (ClO3) 3 2 H2O 的单晶已从 Pr2 (CO3) 3 x H2O 和 HClO3 的反应中获得。晶体结构（正交，P212121，Z = 4，a = 576.03 (7)，b = 1236.7 (2)，c = 1314.0 (2) pm）包含由两个 H2O 分子和七个 ClO3 基团配位的 Pr3 + 离子。根据DTA/TG测量，Pr(ClO3)3·2H2O以Pr(ClO3)3为中间体，PrOCl为最终产物，分两步分解。还通过温度相关的 X 射线粉末衍射研究了分解。
• Syntheses, crystal structures, and thermal behavior of the rare earth amidosulfates M(NH2SO3)3·2H2O (M=Pr, Nd, Sm)
  作者：Mathias S. Wickleder

  DOI：10.1016/s0925-8388(00)00624-1

  日期：2000.5

  steps to the anhydrous sulfates, M 2 (SO 4 ) 3 (M=Pr–Sm). The decomposition of these compounds has been confirmed by means of temperature-dependent X-ray powder diffraction. By very slow dehydration under flowing argon, single crystals of the monohydrate intermediate for M=Sm were obtained. This triclinic compound has a layer structure and contains eight-fold-coordinate Sm 3+ . However, the NH 2 SO 3 −

  摘要 M 3+ (M=Pr, Nd, Sm) 在氨基磺酸水溶液中蒸发生成氨基硫酸盐二水合物 M(NH 2 SO 3 ) 3 ·2H 2 O。根据 X 射线单晶结构测定，它们包含八重配位 M 3+ 离子，其中 [MO 8 ] 多面体和氨基硫酸盐基团连接到通过氢桥连接在一起的无限片。DTA/TG 研究表明，二水合物以两步机制失去 H 2 O，生成酰胺硫酸盐一水合物作为中间体。无水酰胺硫酸盐分两步分解为无水硫酸盐，M 2 (SO 4 ) 3 (M=Pr–Sm)。这些化合物的分解已通过温度相关的 X 射线粉末衍射得到证实。通过在流动的氩气下非常缓慢的脱水，获得了 M=Sm 的单水合物中间体的单晶。该三斜化合物具有层状结构并含有八重配位Sm 3+ 。然而，NH 2 SO 3 - 离子比相应的二水合物具有更高的配位。进一步加热产生结晶粉末形式的无水酰胺硫酸盐。根据X射线研究，它们与La(NH 2 SO
• Preparation of Some Lanthanoid Picrates and the Behavior of Their Water of Hydration
  作者：Kazuharu Nakagawa、Kayoko Amita、Hifumi Mizuno、Yoshihisa Inoue、Tadao Hakushi

  DOI：10.1246/bcsj.60.2037

  日期：1987.6

  Lanthanoid(III) picrates (Ln=La, Ce, Pr, Nd, Sm, Eu, Gd, Dy, and Yb) were prepared from picric acid and the corresponding lanthanoid carbonates in good yields. Combustion analyses, ICP emission analyses, and UV spectrophotometry have shown that the light lanthanoid picrates, i.e. Ln=La–Gd, are all undecahydrates, while the heavy ones, Dy and Yb, are octahydrates. An examination by TG-DTA has revealed that these hydrates, being fairly stable in air at ambient temperature, are quite labile to give partially or completely dehydrated samples upon drying under vacuum, in a desiccator, and/or at elevated temperatures just above 30°C.

  镧系元素（III）苦味酸盐（Ln=La、Ce、Pr、Nd、Sm、Eu、Gd、Dy和Yb）由苦味酸和相应的镧系元素碳酸盐制备而成，收率较高。燃烧分析、ICP发射分析和紫外分光光度法表明，轻镧系元素苦味酸盐（即Ln=La-Gd）均为十水合物，而重镧系元素（Dy和Yb）为八水合物。TG-DTA检查表明，这些水合物在环境温度下在空气中相当稳定，但在真空干燥器中干燥和/或在30°C以上的高温下，它们会变得不稳定，部分或完全脱水。