Azoles and azines

The dipole moments of 2-aryl-4-chloro-6-oxo-1,3-thiazines and 2-aryl-4-chloro-5-formyl-6-oxo-1,3-thiazines (Ar=C₆H₅, C₆H₅Cl-p, C₆H₅CH₃-p) were determined experimentally in benzene and calculated by the additive scheme with the vector method, as well as by the PPDP/2 method. Comparison of the data obtained with the calculated data showed that the formyl group is taken out of the plane of the thiazine ring.For Communication 64, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 272–275, February, 1988.