Knowledge Bank

Gas phase magnesium hydroxide was produced by the reaction of Mg atoms and $H2O2$ and the A-X system has been studied using a tunable dye laser in the 358-395 nm region. The excitation spectra are complicated. The vibrational analysis and the rotational analysis indicate that MgOH is quasi-linear in both th A and X states. The geometry of MgOH has been determined, and the molecule is well described as a near prolate asymmetric rotor with a Ray asymmetry parameter less than -0.997. The results will be discussed and compared to those obtained previously for CaOH, SrOH and BaOH.