Ba(acac)2 | 12084-29-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Ba(acac)2
• 英文别名: barium(2+);pentane-2,4-dione
• CAS: 12084-29-6
• 化学式: C₁₀H₁₄BaO₄
• 分子量: 335.549
• InChiKey: PCCXJFCCJLNBDF-UHFFFAOYSA-N

物化性质

• 熔点：
  >320°C
• 暴露限值：
  ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

安全信息

• TSCA：
  No
• 危险等级：
  6.1
• 安全说明：
  S22,S26,S36
• 危险类别码：
  R20/21/22,R36/37/38
• 海关编码：
  2915900090
• 包装等级：
  III
• 危险类别：
  6.1
• 危险品运输编号：
  UN 1564

反应信息

• 作为反应物：
  描述：

  copper acetylacetonate 、 yttrium triacetylacetonate 、 Ba(acac)2 在 氧气 作用下， 以 not given 为溶剂， 生成 yttrium barium cuprate
  参考文献：
  名称：

  Surface resistances of 5-cm-diameter YBCO films prepared by MOD for microwave applications

  摘要：

  Large-area high-T-c superconducting films with low surface resistances R-s are required for use in microwave applications such as band pass filters. In this paper, preparation of 5-cm-diameter YBCO films on LaAlO3 (LAO) and CeO2-buffered sapphire (CbS) substrates by metalorganic deposition (MOD) using a fluorine-free coating solution and their superconducting properties are described. The optimum firing conditions for YBCO films greatly depend on the substrate materials; a heating rate at ramp as high as 200 degrees C/min is necessary for films on LAO whereas a lower heating rate, e.g., 20 degrees C/min, is required for films on CbS. Accordingly, the suitable furnace systems for these substrates have been varied. As a result, a YBCO film with high J(c) (77 K) of 2.7 MA/cm(2) and a low R-s (12 GHz, 77 K) of 0.54 m Omega was prepared on LAO by using an infrared image furnace. On the other hand, a YBCO film with a higher J(c) (77 K) of 4.0 MA/cm(2) and the same R-s (12 GHz, 77 K) of 0.54 m Omega was prepared on CbS by using a tube furnace. (c) 2006 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.physc.2006.04.042
• 作为产物：
  描述：

  乙酰丙酮 在 barium 作用下， 以 环己烷 为溶剂， 以44%的产率得到Ba(acac)2
  参考文献：
  名称：

  在 90 °C 下对金属乙酰丙酮化物和乙酰乙酸乙酯配合物进行蒸汽处理以制备金属氧化物

  摘要：

  蒸汽处理是一种通过在低温（<120 °C）下将金属络合物暴露于水蒸气来合成金属氧化物的技术。虽然锌和铝配合物已通过蒸汽处理转化为纤锌矿 ZnO 和假 AlOOH，但尚未研究涉及蒸汽处理的金属 β-酮酯配合物的其他合成。在此，我们关注金属乙酰丙酮化物 (acac) 和乙酰乙酸乙酯 (etac) 配合物（金属 = Mg、Ca、Ba、Ti、Zr、Fe、Co、Ni 和 Cu）在 90°C 蒸汽处理后的行为。Ti(acac) 2 (O i Pr) 2 , Ti(etac) 2 (O i Pr) 2 , Fe(acac) 3 , Co(acac) 2 , Co(etac) 2, 和 Cu(etac) 2在空气气氛下的蒸汽处理中转化为结晶金属氧化物。其他金属络合物转化为非晶态金属氧化物、金属氢氧化物、金属碳酸盐或不分解。蒸汽处理的水解机理是通过水攻击金属物种来进行的。形成的反应性羟基迅速与其他分子反应，形成金属氧烷键。

  DOI：

  10.1016/j.ica.2022.120864

文献信息

• Complexes of Group 2 dications with soft thioether- and selenoether-containing macrocycles
  作者：William Levason、David Pugh、Jamie M. Purkis、Gillian Reid

  DOI：10.1039/c6dt00808a

  日期：——

  gave [M(heterocrown)(MeCN)2][BArF]2 for M = Mg, Ca or Sr, whilst the larger Ba forms [Ba(heterocrown)(acacH)(MeCN)][BArF]2. The complexes have been characterised by microanalysis, IR, 1H and 13C1H} NMR spectroscopy. X-ray crystal structures are reported for [Ca([18]aneO2S4)(MeCN)2][BArF]2, [Ca([18]aneO4Se2)(MeCN)2][BArF]2, [Sr([18]aneO4S2)(MeCN)2][BArF]2, and [Sr([18]aneO4Se2)(MeCN)2][BArF]2 which

  描述了一种从金属乙腈配合物与弱配位[BAr F ] -阴离子到Mg，Ca，Sr和BA与18元环O 4 S 2，O 4 Se 2和O 2 S 4供体大环的阳离子配合物的新途径。使用的前体是[M（MeCN）x ] [BAr F ] 2（M = Mg，x = 6； M = Ca，x = 8）和[M'（acacH）（MeCN）5 ] [BAr F ] 2（M'= Sr或BA）。这些与杂皇冠[18] aneO 4 S 2的反应（1,4,10,13-四氧杂-7,16-二硫代环十八烷），[18] aneO 4 Se 2（1,4,10,13-四氧杂-7,16-二硒代环十八烷）或[18] aneO 2 S 4（1,10-dioxa-4,7,13,16-tetrathiacyclooctadecane）在无水CH 2 Cl 2溶液中得到[M（杂居]（MeCN）2 ] [BAr F ] 2，其中M = Mg，C
• Preparation of high-Jc Y123 films on CeO2-buffered sapphire substrates by MOD using a low-cost vacuum technique
  作者：I. Yamaguchi、M. Sohma、K. Tsukada、W. Kondo、K. Kamiya、S. Mizuta、T. Kumagai、T. Manabe

  DOI：10.1016/j.physc.2006.04.054

  日期：2006.10

  High-J(c) Y123 films were obtained on CeO2-buffered sapphire substrates by metal organic deposition using a low-cost vacuum technique. The total pressure (P-total) and oxygen partial pressure (pO(2)) in a tube furnace were controlled by evacuation with a rotary pump and by flowing gas mixtures of O-2 and an inert gas (N-2 or Ar). The effects of P-total and inlet gas flow rates (V-gas) on the growth of Y123 films were investigated for films heat-treated at 750 degrees C. From the results of X-ray diffraction and monitored pO(2), it was found that the pO(2) became lower by residual carbon in the prefired films when heat treatments were carried out at a higher P-total and/or using a slower V-gas, and that there contained an a-axis orientation in Y123 films at a lower P-total. High critical-current density (J(c)) Y123 films were obtained by heat treatment at p(total) = 10(4) Pa and V-gas = 200 ml/min. An average J(c) of the film was 3.4 MA/cm(2) and the fluctuation of J. was within +/- 15% of the average. (c) 2006 Elsevier B.V. All rights reserved.
• 10.1016/s0921-4534(03)01152-3
  作者：Torii、Akita、Manabe、Kumagai、Inoue

  DOI：10.1016/s0921-4534(03)01152-3

  日期：——
• Homoepitaxial growth of MOD-YBCO thick films on evaporated and MOD templates
  作者：D. Tanabe、I. Yamaguchi、M. Sohma、K. Tsukada、M. Matsui、T. Kumagai、T. Manabe

  DOI：10.1016/j.physc.2011.05.098

  日期：2011.11
• Chung, Yong S.; Hill, D. Norman; Carter, W. Brent, Journal of the American Ceramic Society, 1996, vol. 79, # 3, p. 673 - 680
  作者：Chung, Yong S.、Hill, D. Norman、Carter, W. Brent、Lackey, W. Jack

  DOI：——

  日期：——