Nuclear hyperfine coupling constants of indium monoiodide determined by Fourier-transform, microwave spectroscopy

Quantum Chemical Investigations on Molecular Clusters

“…In a supersonic jet expansion, the expansion of gas at a high pressure results into the separation of vibrational–rotational energy levels. , This is the ideal condition for studying MW spectra . The Fourier transform (FT) microwave spectroscopy has been widely employed for investigating rotational spectra of small-sized weakly bound complexes. , A brief summary of the broadband FT rotational spectroscopy from 1953 to 2013 is described in a very recent work from Pate and co-workers. , This technique has been extensively used by Legon and co-workers − for studying many weakly bound dimeric and trimeric molecular complexes. In the recent years, electron attachment and photoelectron spectroscopies have become popular and important tools for studying weakly bonded complexes. − These methods provide information about the electron affinity and ionization energy.…”

“…Since the current review mainly deals with the quantum chemical investigations on molecular clusters, only a brief summary of the experimental methods is given here. Further details of these methods can be found in the respective original refs − , − , and .…”

Solid-State115In and31P NMR Studies of Triarylphosphine Indium Trihalide Adducts

“…Until recently, solid-state 115 In NMR studies have been mainly confined to compounds such as the indium spinel CdIn 2 S 4 and the hexachloroindate anion, InCl 6 3− , for which symmetry ensures that the EFGs at indium are small, resulting in nuclear quadruploar coupling constant values, C Q ( 115 In), that are typically less than 50 MHz. Larger C Q ( 115 In) values have been reported, but these were determined using either nuclear quadrupolar resonance (NQR) or microwave spectroscopy. − However, indium CS and spin−spin coupling tensors cannot be characterized using NQR spectroscopy, and while high-resolution microwave spectroscopy can in principle provide such information, the technique can only be applied to small molecules in the gas state, and thus only a few indium compounds, such as diatomic indium−halides, ,, InOH, and In(C 5 H 5 ) have been studied by this technique. Recent work in our lab has demonstrated that obtaining 115 In NMR spectra of solid samples with C Q ( 115 In) values as large as 250−300 MHz is feasible .…”

Vibrational energies and full analytic potential energy functions of PbI and InI from pure microwave data

“…The most recent study of InI by microwave spectroscopy used a Balle-Flygare FTMW spectrometer [14] to yield accurate transition frequencies for the v = 0 state. The results of that earlier work provided a guide to the rotational transition frequencies and hyperfine splitting patterns that could be expected of the rotational spectra of excited vibrational states.…”

“…In the present work, the extensive results presented in [5] are combined with results obtained by other workers for different wavelength ranges [6][7][8][9][10][11] and used for the potential energy function fitting described in Section 3.2.2. The microwave spectrum of InI has been explored by several previous works [12,13] with the most recent study having been performed in 2006 [14]. Rotational transition frequencies are measured and parameters in a model Hamiltonian determined for vibrational levels from v = 4 to 11 for the first time herein.…”