Microwave spectroscopy of platinum monofluoride and platinum monochloride in the X 2Π3/2 states

Abstract

Platinum monofluoride (PtF) and platinum monochloride (PtCl) were detected in the gas phase using a source-modulated microwave spectrometer. The PtF and PtCl radicals were generated in a free space cell using the sputtering reaction from a platinum sheet placed on the inner surface of a stainless steel cathode through a dc glow discharge plasma of CF(4) and Cl(2), respectively, diluted with Ar. Rotational transitions were measured in the region between 150 and 313 GHz. Rotational, centrifugal distortion, and several fine- and hyperfine-structure constants were determined by a least-squares analysis. The observed fine-structure spectral patterns indicate that both PtF and PtCl radicals have the (2)Π(3/2) electronic ground states, while the related cyanide PtCN and hydride PtH radicals have the (2)Δ(5/2) electronic ground states.

The pure rotational spectra of the open-shell diatomic molecules PbI and SnI

“…[40][41][42] For PbI, the harmonic frequency is in good agreement with the result from the electronic study of Rodriguez et al in 1996 (160.3 ± 0.6 cm…”

Hyperfine structure of the B3Π1 state and predictions of optical cycling behavior in the X→B transition of TlF

“…This contribution likely dominates in the B state, where levels with 3 ∆ and 3 Σ character are predicted to lie near in energy [16]. In such a situation, c I can be significantly larger than when the main contribution comes from the first mechanism; for example, in 195 PtF, c I (Pt) = 3.11 MHz [15].…”

“…This is equivalent to the analysis of Ref. [15], which used the substitution h 1 → h 1 ±h 1q and and c I → c I ±c Iq , with the upper (lower) sign used for the e-(f -) parity states.…”

Matrix Isolation Spectroscopic and Relativistic Quantum Chemical Study of Molecular Platinum Fluorides PtFn (n=1–6) Reveals Magnetic Bistability of PtF4

“…[1b] and references therein), but only very few spectroscopic investigations on molecular fluorides of platinum in lower oxidation states. Platinum monofluoride (PtF) has been studied by microwave, [8] laser absorption, [9] and laser‐induced fluorescence spectroscopy. [10] Very recently we have reported the infrared stretching frequencies of PtF and PtF 2 embedded in solid neon and argon matrices.…”