The distortion moment spectrum of GeH4: the microwave Q branch

摘要: Ten pure rotational Q-branch transitions of the distortion moment spectrum GeH4 have been measured between 9 and 23 GHz. They were observed in a conventional Stark modulated spectrometer modified to sensitivity 1 × 10−11 cm−1. No Ge isotope splitting was spectrum. The analysed terms single set six tensor centrifugal constants DT, H4T, H6T, L4T, L6T, L8T. results found predict accurately previously reported from infrared–microwave double resonance spectroscopy, complete analysis using both sets data carried out. are (in hertz): DT = 67 775.54 ± 0.86; H4T = −5.3827 ± 0.0055; H6T = 2.9693 ± 0.0019; L4T = (3.996 ± 0.088) × 10−4; L6T = −(4.122 ± 0.050) × 10−4; L8T = −(8.01 ± 0.14) × 10−4. errors here standard deviations obtained least-squares analysis; estimates absolute also given. For possible application other high resolution studies, ha...