Search Results - "Ilyushin, Vadim V."

Isotopic dependence of the hydrogen-transfer-triggered methyl-group rotation in deuterated 5-methyltropolone by Ilyushin, Vadim V., Johnson, Alyssa M., Hohl, Jenna, Cloessner, Emily A., Lovas, Frank J., Lavrich, Richard J.

“…[Display omitted] •The microwave spectrum of deuterated 5-methyltroplone was studied.•Dependence of the tunneling parameters of 5-MT upon deuteration was…”
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Intertorsional Interactions Revealing Absolute Configurations: The V6 Internal Rotation Heavy-Top Case of Benzotrifluoride by Ilyushin, Vadim V., Favero, Laura B., Caminati, Walther, Grabow, Jens-Uwe

“…The microwave spectroscopic signatures of multiple torsional states of the CF3 internal rotation in benzotrifluoride (α,α,α‐trifluorotoluene) are reported…”
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A microwave study of hydrogen-transfer-triggered methyl-group rotation in 5-methyltropolone by Ilyushin, Vadim V, Cloessner, Emily A, Chou, Yung-Ching, Picraux, Laura B, Hougen, Jon T, Lavrich, Richard

“…We present here the first experimental and theoretical study of the microwave spectrum of 5-methyltropolone, which can be visualized as a seven-membered…”
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The microwave spectrum of a two-top peptide mimetic: the N-acetyl alanine methyl ester molecule by Plusquellic, David F, Kleiner, Isabelle, Demaison, Jean, Suenram, Richard D, Lavrich, Richard J, Lovas, Frank J, Fraser, Gerald T, Ilyushin, Vadim V

“…The rotational spectrum of N-acetyl alanine methyl ester, a derivative of the biomimetic, N-acetyl alanine N'-methyl amide or alanine dipeptide, has been…”
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Sensitivity to a possible variation of the proton-to-electron mass ratio of torsion–rotation transitions in acetone (CH3)2CO by Ilyushin, Vadim V.

“…[Display omitted] •Sensitivity to the proton-to-electron mass ratio variation is explored for acetone.•Interplay between torsion and rotation motions in…”
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High-J rotational spectrum of toluene in |m|⩽3 torsional states by Ilyushin, Vadim V., Alekseev, Eugene A., Kisiel, Zbigniew, Pszczółkowski, Lech

“…[Display omitted] •Analysis of a high-J spectrum of a molecule with a low sixfold barrier.•The rho-axis method and RAM36 program were used for the…”
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A new torsion–rotation fitting program for molecules with a sixfold barrier: Application to the microwave spectrum of toluene by Ilyushin, Vadim V., Kisiel, Zbigniew, Pszczó lkowski, Lech, Mäder, Heinrich, Hougen, Jon T.

“…A new program is described for fitting rotation–torsion energy levels in molecules like toluene, in which the frame (C 6H 5) has C 2v symmetry and the methyl…”
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Submillimeter wave spectrum of acetic acid by Ilyushin, Vadim V., Endres, Christian P., Lewen, Frank, Schlemmer, Stephan, Drouin, Brian J.

“…[Display omitted] •A new study of the submillimeter wave spectrum of CH3COOH has been carried out.•The torsion–rotation transitions with J up to 79 and Ka up…”
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A fitting program for molecules with two equivalent methyl tops and C2v point-group symmetry at equilibrium: Application to existing microwave, millimeter, and sub-millimeter wave measurements of acetone by Ilyushin, Vadim V., Hougen, Jon. T.

“…[Display omitted] •A new program for fitting the spectra of acetone-like molecules is developed.•The program allows a joint fit of rotational transitions of…”
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Intertorsional Interactions Revealing Absolute Configurations: The V 6 Internal Rotation Heavy‐Top Case of Benzotrifluoride by Ilyushin, Vadim V., Favero, Laura B., Caminati, Walther, Grabow, Jens‐Uwe

“…Abstract The microwave spectroscopic signatures of multiple torsional states of the CF 3 internal rotation in benzotrifluoride (α,α,α‐trifluorotoluene) are…”
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Investigation of the rotational spectrum of CH$_3$$^{17}$OH and its tentative detection toward Sagittarius B2(N) by Müller, Holger S. P, Ilyushin, Vadim V, Belloche, Arnaud, Lewen, Frank, Schlemmer, Stephan

“…A&A 688, A201 (2024) Methanol is an abundant molecule in space. The column density of CH$_3^{18}$OH is in some star-forming regions so high that the search for…”
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Reinvestigation of the microwave spectrum of 2-methylmalonaldehyde by Ilyushin, Vadim V., Alekseev, Eugene A., Chou, Yung-Ching, Hsu, Yen-Chu, Hougen, Jon T., Lovas, Frank J., Picraux, Laura B.

“…The molecule 2-methylmalonaldehyde (2-MMA) exists in the gas phase as a six-membered hydrogen-bonded ring [HO CH C(CH 3) CH O] and exhibits two large-amplitude…”
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Deuterated methyl mercaptan (CH$_3$SD): Laboratory rotational spectroscopy and search toward IRAS 16293-2422 B by Zakharenko, Olena, Lewen, Frank, Ilyushin, Vadim V, Drozdovskaya, Maria N, Jørgensen, Jes K, Schlemmer, Stephan, Müller, Holger S. P

“…A&A 621, A114 (2019) Methyl mercaptan (also known as methanethiol), CH3SH, has been found in the warm and dense parts of high -- as well as low -- mass…”
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Interstellar Detection of Methyl Isocyanate CH$_3$NCO in Sgr B2(N): A Link from Molecular Clouds to Comets by Halfen, DeWayne T, Ilyushin, Vadim V, Ziurys, Lucy M

“…A new interstellar molecule, CH$_3$NCO (methyl isocyanate), has been detected using the 12 m telescope of the Arizona Radio Observatory (ARO). CH$_3$NCO was…”
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Sensitivity to a possible variation of the proton-to-electron mass ratio of torsion-wagging-rotation transitions in methylamine CH 3 NH 2 by Ilyushin, Vadim V., Jansen, Paul, Kozlov, Mikhail G., Levshakov, Sergei A., Kleiner, Isabelle, Ubachs, Wim, Bethlem, Hendrick L.

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Rotational spectroscopy of isotopic species of methyl mercaptan at millimeter and submillimeter wavelengths: CH$_3$$^{34}$SH by Zakharenko, Olena, Lewen, Frank, Ilyushin, Vadim V, Müller, Holger S. P, Schlemmer, Stephan, Alekseev, Eugene A, Krapivin, Igor, Xu, Li-Hong, Lees, Ronald M, Garrod, Robin, Belloche, Arnaud, Menten, Karl M

“…A&A 627, A41 (2019) Methyl mercaptan (CH$_3$SH) is an important sulfur-bearing species in the interstellar medium, terrestrial environment, and potentially in…”
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Sensitivity to a possible variation of the Proton-to-Electron Mass Ratio of Torsion-Wagging-Rotation Transitions in Methylamine (CH3NH2) by Ilyushin, Vadim V, Jansen, Paul, Kozlov, Mikhail G, Levshakov, Sergei A, Kleiner, Isabelle, Ubachs, Wim, Bethlem, Hendrick L

“…Phys. Rev. A, 85, 032505 (2012) We determine the sensitivity to a possible variation of the proton-to-electron mass ratio \mu for torsion-wagging-rotation…”
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Microwave Spectrum of Glycerol by Ilyushin, V.V., Motiyenko, R.A., Lovas, F.J., Plusquellic, D.F.

“…Glycerol molecule presents information about the energies involved in intramolecular hydrogen bonding of vicinal hydroxyl groups. These properties were the…”
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Microwave Spectrum of 2-Methylmalonaldehyde: Analysis of the Hydrogen-Transfer and Internal-Rotation Motions by Ilyushin, V.V., Alekseev, E.A., Yung-Ching Chou, Hougen, J.T., Lovas, F.J., Picraux, L.B.

“…The paper presents a new experimental study of the microwave spectra of 2-MMA-dO [HO-CH=C(CH3)- CH=0] and 2-MMA-dl [DO-CH=C(CH3)-CH=0] isotopologues of the…”
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