Chemical engineers work across a number of sectors, processes differ within each of these areas, but chemistry and chemical engineering roles are found throughout, and are directly involved in the process of chemical products and materials. 110351-94-5, Name is (S)-4-Ethyl-4-hydroxy-7,8-dihydro-1H-pyrano[3,4-f]indolizine-3,6,10(4H)-trione, molecular formula is , belongs to pyrrolines compound. In a document, author is Rybalova, TV, Product Details of 110351-94-5.
Investigation of conjugated dinitrones – Derivatives of pyrroline oxide
The molecular structure of three derivatives of bis(2-R-5,5-dimethyl-3-oxo-1-oxide pyrrolin-1-ylidene-3), where R = CH3 (5a), C6H5 (5b), C(CH3)(3) (5c), and of the complex of 5b with copper(II) hexafluoroacetylacetonate [Cu(hfac)(2) (5b)] was investigated by X-ray diffraction analysis in the framework of our studies of the possible tautomeric equilibrium conjugated dinitrone nitroxide biradical. The pyrroline rings of the molecules under analysis are planar (rms deviations of atoms are no more than 0.041 Angstrom), and the interplanar angles are 32.01(5), 42.84(9), and 51.45(7)degrees for 5a, 5b, and 5c, respectively. It is established that the bond lengths of the C(2)-C(3)=C(3a)-C(2a) fragment are equalized to C(2)-C(3) 1.42 and C(3)-C(3a) 1.40 Angstrom. The N–>O bond lengths of the nitrone group are within 1.250(4)-1.282(4) Angstrom [in Cu(hfac)2 (5b)]. The geometrical data obtained do not permit us to make an unambiguous choice between the tautomeric structures. The magnetic susceptibility measurements of the Cu(hfac)2 solid complex (5b) and the absence of paramagnetism in solid compounds 5 indicate that they are diamagnetic.
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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem