12031-20-8Relevant academic research and scientific papers
Kinetic study of gas-phase Y(a 2D3/2) and La(a 2D3/2) with O2, N2O, CO2 and NO
Campbell, Mark L.
, p. 339 - 344 (1998)
The second-order rate constants of gas-phase Y(a 2D3/2) and La(a 2D3/2) with O2, N2O, CO2 and NO as a function of temperature are reported. In all cases, the reactions are relatively fast. For Y(a 2D3/2), the bimolecular rate constants (in cm3 s-1) are described in Arrhenius form by k(O2)=(2.2±0.1)×10-10 exp(-3.5±0.6 kJ mol-1/RT), k(N2O)=(1.9±0.2)×10-10 exp(-4.0±0.8 kJ mol-1/RT), k(CO2)=(1.0±0.1)×10-10 exp(-2.3±0.6 kJ mol-1/RT), where the uncertainties are ±2σ. The rate constants for Y reacting with NO are temperature insensitive with a value of 1.0×10-10 cm3 s-1. For La(a 2D3/2), the bimolecular rate constants for all the reactants are near the gas-kinetic collision rate.
A new hypermetallic molecule LaOMn generated by laser ablation
Wang, Xue-Feng,Dang, Hai-Jun,Gu, Zhen-Ning,Qin, Qi-Zong
, p. 739 - 744 (2008/10/08)
A new hypermetallic oxide LaOMn and its positive ion involving two heterometal atoms were observed and identified in the 532 nm 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.
