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X-ray structure analysis of 5N-ethyl-8-carboxy-9-oxo-11-methyl-pyrido[2,1-b]quinazoline (2000)

Rajnikant ; Gupta, V. R. ; Singh, Attar

Springer

Crystallography reports 45 (2000), S. 611-614

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ISSN: 1063-7745

Source: Springer Online Journal Archives 1860-2000

Topics: Geosciences , Physics

Notes: Abstract The crystal structure of 5N-ethyl-8-carboxy-9-oxo-11-methyl-pyrido[2,1-b]quinazoline (C16H16N2O3) has been determined by X-ray diffraction analysis. The compound crystallizes in the monoclinic crystal system (space group P21/c) with the unit cell parameters a = 9.775(1) Å, b = 15.868(1) Å, c = 9.799(1) Å, β = 113.50(1)°, Z = 4. The benzene ring is planar, the pyrimidine ring exists in 11β-sofa conformation, and the pyridone ring deviates slightly from planarity. The crystal packing exhibits intra-and intermolecular interactions of the O-H⋯O, C-H⋯O, and C-H⋯N types.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1134/1.1306571

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