The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 3-Methyl-1H-pyrrole, is researched, Molecular C5H7N, CAS is 616-43-3, about 14N nuclear quadrupole coupling and methyl internal rotation in 3-methylpyrrole investigated by microwave spectroscopy, the main research direction is methylpyrrole nuclear quadrupole coupling.Recommanded Product: 616-43-3.
The mol. structure of 3-methylpyrrole in the gas phase has been determined using a combination of high-resolution spectroscopy and quantum chem. calculations The rotational spectrum was recorded using a mol. jet Fourier transform microwave spectrometer covering the frequency range from 2.0 to 26.5 GHz. The exptl. data were analyzed using the programs XIAM and BELGI-Cs-hyperfine. Because the internal rotor axis accidentally lies along the principal a-axis of inertia, the rho axis system and the principal axis system coincide, enabling a direct comparison of the fits. With the program XIAM, the rotational constants A = 8631.1629(12), B = 3342.19750(43), and C = 2445.73846(42) MHz were obtained. Torsional splittings due to internal rotation of the Me group were observed, leading to the determination of the V3 potential of 245.92445(31) cm-1. Hyperfine splittings arising from the nuclear quadrupole coupling of the 14N nucleus could be resolved, and the quadrupole coupling constants χaa = 1.4159(49) and χbb – χcc = 4.1622(86) MHz were found.
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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate