一氧化镧 | 12031-20-8

• 中文名称: 一氧化镧
• 英文名称: lanthanum monoxide
• CAS: 12031-20-8
• 化学式: LaO
• 分子量: 154.905
• InChiKey: PLXQGEWNITUHNB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.12
• 重原子数：
  2.0
• 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：
  17.07
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为产物：
  描述：

  三氢化镧 、 氧气 以 gaseous matrix 为溶剂， 生成 一氧化镧
  参考文献：
  名称：

  Kinetic study of gas-phase Y(a 2D3/2) and La(a 2D3/2) with O2, N2O, CO2 and NO

  摘要：

  The second-order rate constants of gas-phase Y(a(2)D(3/2)) and La(a(2)D(3/2)) with O-2, N2O, CO2 and NO as a function of temperature are reported. In all cases, the reactions are relatively fast. For Y(a(2)D(3/2)), the bimolecular rate constants (in cm(3) s(-1)) are described in Arrhenius form by k(O-2) = (2.2 +/- 0.1) X 10(-10) exp(-3.5 +/- 0.6 kJ mol(-1)/RT), k(N2O) = (1.9 +/- 0.2) X 10(-10) exp( -4.0 +/- 0.8 kJ mol(-1)/RT), k(CO2) = (1.0 +/- 0.1) x 10(-10) exp(-2.3 +/- 0.6 kJ mol(-1)/RT), where the uncertainties are +/-2 sigma. The rate constants for Y reacting with NO are temperature insensitive with a value of 1.0 X 10(-10) cm(3) s(-1). For La(a(2)D(3/2)), the bimolecular rate constants for all the reactants are near the gas-kinetic collision rate. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s0009-2614(98)00905-1

文献信息

• The microwave rotational spectrum of X 2Σ LaO
  作者：T. Törring、K. Zimmermann、J. Hoeft

  DOI：10.1016/s0009-2614(88)85030-9

  日期：1988.10

  The microwave absorption spectrum of LaO has been observed in the frequency range between 84 and 275 GHz. A precise set of Dunham coefficients for the X 2Σ+ ground state has been determined. Fine and hyperfine constants were found to be in agreement with previous data. An upper limit for the electric dipole moment of μ < 2 D can be estimated from the saturation of the transitions.

  在84至275 GHz的频率范围内观察到LaO的微波吸收光谱。为X A精确的设定纳姆系数2 Σ +地面状态已被确定的。发现精细和超精细常数与以前的数据一致。电偶极矩的上限<2 D可以从跃迁的饱和度中估算出来。
• The energy balance and branching ratios associated with the chemiluminescent reaction Si(3P) + N2O(1Σ) → SiO*(a3Σ+, b3Π, A1Π) + N2(υ″ ⩾ 5) — possible formation of vibrationally excited N2
  作者：James L. Gole、Gary J. Green

  DOI：10.1016/0301-0104(85)87029-4

  日期：1985.11

  Silicon atoms react under single collision conditions with N2O to yield chemiluminescent emission corresponding to the SiO a3Σ+−X1Σ+ and b3Π−X1Σ+ intercombination systems and the A1Π−X1Σ+ band system. A most striking feature of the SiN2O reaction is the energy balance associated with the formation of SiO product molecules in the A1Π and b3Π states. A significant energy discrepancy ( = 10000 cm− =

  硅原子与N-单碰撞条件下反应2 ö以产生对应于一氧化硅化学发光发射3 Σ + -X 1 Σ +和b 3 Π-X 1个Σ +互组系统和A 1 Π-X 1 Σ +带系统。所述SiN的最显着的特征2 ö反应是在A的SiO产物分子的形成相关联的能量平衡1 Π和b 3个Π状态。甲显著能量差异（=万厘米-= 1.24 eV）被发现在可填充最高能量可访问的激发态量子能级的可利用能量与可观察到发射的最高量子能级之间。建议这种差异可能是由于在快速Si fastN 2 O反应性相遇中振动激发的N 2的形成而引起的。发射从一氧化硅3 Σ +（A 1 Π）和b 3 Π（A 1 Π，E 1 Σ 0 +）三重态歧结果主要来自强度借用涉及表示单线态。扰动计算表明在混合的B之间的幅值3 Π，A1米Π和E 1 Σ 0 +状态之间在0.5和2％的范围内。根据这些计算，发现分支比（激发三重态）/（激发单重态）远远超过500。
• A new hypermetallic molecule LaOMn generated by laser ablation
  作者：Xue-feng Wang、Hai-jun Dang、Zhen-ning Gu、Qi-zong Qin

  DOI：10.1016/s0009-2614(98)01383-9

  日期：1999.2

  A new hypermetallic oxide LaOMn and its positive ion involving two heterometal atoms were observed and identified in the 532 Mm laser ablation of a La0.67Ca0.33MnO3 target using both time-resolved quadrupole mass spectrometric and time-of-flight mass spectrometric techniques. The dependence of LaOMn+ yield on the laser fluence also confirmed the formation of the ionic hypermetallic species. Theoretical calculations were carried out to predict the stability and the geometric structures of these new molecules. The calculations suggest that the LaOMn and LaOMn+ molecules might be formed via secondary reactions of the neutral and ionic MnO with La or La+ in the laser ablated plasma. (C) 1999 Elsevier Science B.V. All rights reserved.