europium(III) oxalate

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: europium(III) oxalate
• 英文别名: europim(III) oxalate；europium oxalate；europium(3+);oxalate
• 化学式: 3C₂O₄*2Eu
• 分子量: 567.979
• InChiKey: ONBHGTAWAWSESG-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  -3.51
• 重原子数：
  7
• 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：
  80.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  europium(III) oxalate 以 neat (no solvent) 为溶剂， 生成 europium dioxycarbonate
  参考文献：
  名称：

  Thermochemistry of decomposition of RE2O2CO3 (RE=Sm, Eu)

  摘要：

  Thermochemistry in the decomposition of samarium di-oxycarbonate, Sm2O2CO3(s) and europium di-oxycarbonate Eu2O2CO3(s) was studied over the temperature regions of 755-987 K and 773-989 K, respectively. The equilibrium properties of the decomposition reactions were obtained by tensimetric measurement of the CO2(g) pressure over the biphasic mixture of RE2O2CO3(s) and RE2O3(s) at different temperatures (RE= Sm, Eu) and also by thermogravimetric analysis of the decomposition temperature at 1 atmosphere of CO2 pressure. The temperature dependence of the equilibrium pressure of CO2 thus measured could be given byIn p(CO2) (Pa) (+/-0.13)= -15722.8/T + 26.83 (755 <= T(K) <= 987) forSm2O2CO3 decomposition andIn p(CO2) (Pa) (+/-0.13)= -18615.7/T + 29.90 (773 <= T(K) <= 989) forEu2O2CO3 decomposition.From the above vapor pressure expressions, the median enthalpy and entropy of the decomposition of the oxycarbonates were calculated by the second law analysis and their thermodynamic stabilities were derived. The results are discussed in the light of available thermochemical data of the compounds. (C) 2008 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.tca.2008.08.008
• 作为产物：
  描述：

  hydrazinium ethylenediaminetetraacetatotriaquoeuropium pentahydrate 以 neat (no solvent) 为溶剂， 生成 europium(III) oxalate
  参考文献：
  名称：

  对某些含肼阳离子的镧系元素-EDTA配合物的热降解研究

  摘要：

  较轻和较重的镧系元素（III）离子与乙二胺四乙酸（H4edta）的二肼盐形成水溶液，生成肼基镧系元素乙二胺四乙酸盐水合物N 2 H 5 [Ln（edta）（H 2 O）3 ]·（H 2 O）5，其中 LN ＝ La，Ce，Pr，Nd，Sm，Eu，Gd，Tb和Dy。X射线单晶研究已证实配位球内存在的水分子数量。通过TG分析的质量损失清楚地表明存在五个水分子作为晶格水。在恒定温度（100–110°C）下将已知量（1 g）的每个样品脱水约5分钟，这进一步证实了非配位水分子的数量。除去晶格水后的配合物经历多步分解，得到相应的金属氧化物作为最终产物。DTA显示脱水的吸热和无水配合物分解的放热。通过X射线粉末衍射研究证实了金属氧化物的形成。

  DOI：

  10.1007/s10973-007-8685-4

文献信息

• Two novel families of lanthanide mixed-ligand complexes: synthesis, structure and characterization of [Ln(H2O)x]2(C2O4)[O(CH2CO2)2]2 with x=3, Ln=Ce–Gd and x=1, Ln=Ho–Lu, including yttrium
  作者：S. Roméro、J.C. Trombe

  DOI：10.1016/s0277-5387(99)00051-0

  日期：1999.4

  New lanthanide complexes associating two ligands, oxalate and oxydiacetate, have been prepared under an autogenous pressure at 200°C for 7 to 21 days by reacting an aqueous suspension of the corresponding lanthanide oxalate and oxydiacetic acid. These complexes are gathered into two families, [Ln(H2O)x]2(C2O4)[O(CH2CO2)2]2 with x=3, Ln=Ce–Gd I and x=1, Ln=Ho–Lu including Y II, according to the number

  通过使相应的镧系草酸镧盐和氧二乙酸的水悬浮液反应，在200℃的自生压力下，制备了将两种配体草酸盐和氧二乙酸盐结合的新镧系元素络合物。这些络合物被分为两个族，[Ln（H 2 O）x ] 2（C 2 O 4）[O（CH 2 CO 2）2 ] 2，其中x = 3，Ln = Ce–Gd I和x = 1根据水分子的数量，Ln = Ho-Lu包括Y II。钕I的结构已解决和钇II分别来自单晶的X射线衍射数据。两个家族均以单斜晶系结晶，但具有不同的空间群，分别为I和II的P21 / c和C2 / m 。I具有梯形的双链结构，而II具有双层结构。氧二乙酸酯配体和金属原子构成链或层。草酸盐配体分别桥接两个链或两个层。这些实体（双链或双层）之间没有连接，但有氢键。虽然我具有结构紧凑，II提出了一个相对开放的框架；约有12％的单位电池为空。在这两个家族中，草酸酯配体是双螯合的，而氧二乙酸酯配体的配位模式从I中的
• The formation kinetics of some lanthanide oxalate complexes
  作者：Anthony J. Graffeo、John L. Bear

  DOI：10.1016/0022-1902(68)80297-0

  日期：1968.7

  The kinetics of formation and dissociation were determined for the one-to-one lanthanide oxalate complexes by a pressure jump technique. The rates were determined as a function of temperature and the activation parameters calculated. The results suggest that the rate-determining step is the loss of a water molecule from the inner co-ordination sphere of the lanthanide metal ion. The trend in the rate

  通过压力跳跃技术确定了一对一镧系草酸酯配合物的形成和解离动力学。确定速率与温度的函数关系，并计算活化参数。结果表明，决定速率的步骤是水分子从镧系元素金属离子的内部配位球中损失。镧系元素内的形成速率的趋势表明，在从to到the的区域中发生的镧系元素的配位数减少。该结果与其他速率数据，电导率数据以及溶液中镧系元素络合物形成的热力学研究密切相关。
• Comparative studies between the thermal decomposition reactions of lanthanide(III) oxalates and malonates
  作者：Kenzo Nagase、Hiroko Yokobayashi、Kazuo Muraishi、Masae Kikuchi

  DOI：10.1016/0040-6031(91)80104-q

  日期：1991.4

  spectra. X-ray diffractograms, evolved gas analyses and elemental analyses. In N2, the decomposition processes of EU2ox3 and Eu2mal3 were very similar and proceeded through the intermediate formation of Eu(II), which, in the case of Eu2ox3, was confirmed to be in the form of EuCO3. In CO2, on the other hand, the decomposition processes of the two salts were different; that of Eu2ox3 is represented as follows:

  摘要 Eu2ox3·10H2O 和Eu2mal3·6H2O [ox 和mal = (COO-)2 和CH2(COO-)2] 的TG-DTA 分析在N2、O2 和CO2 气氛中进行。每个 TG 阶段的产物都是根据红外光谱确定的。X 射线衍射图、逸出气体分析和元素分析。在 N2 中，EU2ox3 和 Eu2mal3 的分解过程非常相似，并通过中间形成 Eu(II) 进行，在 Eu2ox3 的情况下，Eu 被确认为 Eu 的形式。另一方面，在 中，两种盐的分解过程不同；Eu2ox3 的表示为：Eu2ox3 → Eu → 2 → Eu2O3，而 Eu2mal3 的表示可暂定如下： Eu2mal3 → EuCH(COO)2 → Eu2O(CO3)2 → 2 → 。
• Two New Families of Lanthanide Mixed-Ligand Complexes, Oxalate–Carbonate and Oxalate–Formate: Synthesis and Structure of [Ce(H2O)]2(C2O4)2(CO3)·2.5 H2O and Ce(C2O4)(HCO2)
  作者：S. Romero、A. Mosset、J.C. Trombe

  DOI：10.1006/jssc.1996.0382

  日期：1996.12

  oxalate and oxalic acid. The structures have been solved for the element cerium. In both cases, the structure is built up from cerium atoms sharing all their oxygen atoms with oxalate and carbonate or oxalate and formate ligands, thus forming a three-dimensional network. The cerium polyhedra share either faces or edges or corners. The coordination scheme of the oxalate ligands is variable: bischelating

  使用拟水热法在自生压力下于200°C制备了两个新的镧系配合物，它们将草酸盐和碳酸盐或草酸盐和甲酸盐配体结合在一起。这两个族已扩展到某些镧系元素（Ln）：草酸盐-碳酸盐Ln = Ce，Pr，Nd和Eu；Ln = Ce，Pr，Nd和Eu。草酸盐甲酸LN= La，Ce和Sm。起始悬浮液包含草酸盐或草酸盐与草酸的混合物。已经解决了铈元素的结构。在这两种情况下，结构都是由铈原子与草酸盐和碳酸盐或草酸盐和甲酸的配体共享所有的氧原子构成的，从而形成三维网络。铈多面体共享面，边或角。草酸盐配体的配位方案是可变的：双螯合，双螯合和单齿或双螯合和双单齿。碳酸酯基团起双螯合和双单齿配体的作用，而甲酸酯基团起螯合和单齿的作用。对于某些纯相，通过红外光谱和热行为对这两个原始族进行了表征。
• New open-framework three-dimensional lanthanide oxalates containing as a template the diprotonated 1,2- or 1,3-diaminopropane
  作者：A. Mohanu、C. Brouca-Cabarrecq、J.C. Trombe

  DOI：10.1016/j.jssc.2005.09.044

  日期：2006.1

  atoms, in III, are surrounded by five chelating oxalate groups and that is new. In all the cases within the frame, are observed 8- and 12-membered channels where are localized the guest species, 1,2- or 1,3-diaminopropane cations and free water molecules. The ratio of the guest number (especially the diaminopropane) per 12-membered ring could tune the shape and the size of 12-membered channels: thus, the

  在1,2-二氨基丙烷，（C 3 N 2 H 12）[Nd（H 2 O）（C 2 O 4）2 ] 2 ·的存在下，水热合成了三种新的开架式草酸镧系草酸盐的单晶。3H 2 O I和（C 3 N 2 H 12）[Yb（C 2 O 4）2 ] 2 ·5H 2 O II或1,3-二氨基丙烷（C 3 N 2 H 12）2 [La2（C 2 O 4）5 ]·5H 2 O III。它们的结构已通过X射线衍射数据确定：I和III在三斜晶系，空间群P   -1中结晶，a = 7.8130（5）Å ，b = 11.8800（6）Å ，c = 12.9940（8） Å ，α= 93.092（5）°α= 93.092（5）° ，β= 93.930（6）°β= 93.930（6）° ，γ= 108.359（5）°γ= 108.359（5）°和a = 11.6650 （9）Å ，b = 11.9240（6）Å ，c =