ISSN:
1572-8854
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Both of the title compounds crystallize in the monoclinic system: C23H17NO2 (Ib),P21/c,a = 8.970(1),b = 22.629(5),c = 9.101(1) Å, β = 106.08(1) °,Z = 4,D x = 1.27 Mg m−3; C19H17NO2 (Ic),P21/a,a = 15.225(2),b = 6.429(1),c = 17.190(1) Å, β = 112.99(1) °,Z = 4,D x = 1.25 Mg m−3. The structures were solved and refined by standard methods, both toR ≈ 0.04. In compound Ib, a weak intramolecular interaction is observed between the nitrogen atom from the isoquinoline ring and the carbon atom from the carbonyl group, with the N(2) ⋯. C(18)distance being 2.98 Å. In compound Ic, the PhCO2 -fragment is twisted in the opposite direction to that in compound Ib, without hydrogen bonding. The pK′ a and IR data were considered in the light of the results of the X-ray investigation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01320838
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