FS-SMP

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2018-03-15
16:30
OpenAccess [PUBDB-2018-01488] Journal Article
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Where's water? The many binding sites of hydantoin
Prebiotic hydantoin and its complexes with one and two water molecules are investigated using high-resolution broadband rotational spectroscopy in the 2–8 GHz frequency range. The hyperfine structure due to the nuclear quadrupole coupling of the two $^{14}$N atoms is analysed for the monomer and the complexes. [...]
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2018-03-15
16:18
OpenAccess [PUBDB-2018-01487] Journal Article
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Chirped-pulse Fourier transform millimeter-wave spectroscopy of ten vibrationally excited states of i-propyl cyanide: exploring the far-infrared region
We report here further spectroscopic investigation of the astrochemically relevant molecule i-propyl cyanide. We observed and analysed the rotational spectra of the ground state of the molecule and ten vibrationally excited states with energies between 180–500 cm$^{−1}$. [...]
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2018-01-11
16:41
OpenAccess [PUBDB-2018-00557] Journal Article
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Structural determination and population transfer of 4-nitroanisole by broadband microwave spectroscopy and tailored microwave pulses
The rotational spectrum of 4-nitroanisole was recorded via chirped-pulse Fourier transform microwave spectroscopy in the frequency range of 2-8 GHz. The spectra of the parent molecule and all of its $^{13}$C-, $^{15}$N-, and $^{18}$O-monosubstituted species in their natural abundance were assigned, and the molecular structure was determined using Kraitchman’s equations as well as a least-square fitting approach [...]
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2018-01-11
16:16
OpenAccess [PUBDB-2018-00548] Journal Article
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On the structural intricacies of a metabolic precursor: Direct spectroscopic detection of water-induced conformational reshaping of mevalonolactone
We use high-resolution rotational spectroscopy to investigate the structural intricacies of the lactone form of mevalonic acid, precursor of the mevalonate pathway. By combining microwave spectroscopy with supersonic expansions and quantum-chemical calculations, we determine the two most stable conformations of the precursor. [...]
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2018-01-11
11:08
Embargoed OpenAccess [PUBDB-2018-00456] Journal Article
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Capturing the Elusive Water Trimer from the Stepwise Growth of Water on the Surface of the Polycyclic Aromatic Hydrocarbon Acenaphthene
Polycyclic aromatic hydrocarbons (PAHs) are key players in reaction chemistry. While it is postulated that they serve as a basis for ice grains, there has been no direct detection of PAHs in astronomical environments. [...]
Published on 2017-11-07. Available in OpenAccess from 2018-11-07.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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2017-09-07
07:36
OpenAccess [PUBDB-2017-10447] Journal Article
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Cold Snapshot of a Molecular Rotary Motor Captured by High-Resolution Rotational Spectroscopy
We present the first high-resolution rotational spectrum of an artificial molecular rotary motor. By combining chirped-pulse Fourier transform microwave spectroscopy and supersonic expansions, we captured the vibronic ground-state conformation of a second-generation motor based on chiral, overcrowded alkenes. [...]
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2017-09-07
07:32
Embargoed OpenAccess [PUBDB-2017-10446] Journal Article
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Coherent Enantiomer-Selective Population Enrichment Using Tailored Microwave Fields
We report the experimental demonstration of coherent enantiomer-selective enrichment of chiral molecules by employing a novel microwave five-pulse scheme. Our results show that enantiomers can be selectively transferred to a rotational level of choice by applying sequences of resonant microwave pulses in a phase- and polarization-controlled manner. [...]
Published on 2017-09-27. Available in OpenAccess from 2018-09-27.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);
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