In the title compound, [Y(C(5)H(2)N(2)O(4))(C(5)H(3)N(2)O(4))(C(12)H(8)N(2))(2)]·2H(2)O, the Y(III) ion lies on a twofold rotation axis and exhibits a distorted square-anti-prismatic coordination geometry. It is chelated by two 1,10-phenanthroline ligands, a 2,4-dioxo-1,2,3,4-tetra-hydro-pyrimidine-5-carboxyl-ate mono-anion and a 4-oxido-2-oxo-1,2-dihydro-pyrimidine-5-carboxyl-ate dianion. The ...

In order to obtain and then test pharmocologically any possible conformers of the new feasible analgesic N-benzyl-4-hydroxy-1-methyl-2,2-dioxo-1H-2λ⁶,1-benzothiazine-3-carboxamide, its 4-O-sodium salt was synthesized using two methods. X-ray diffraction study made possible to determine that, depending on the chosen synthesis conditions, the above-mentioned compound forms either monosolvate with...

In the enanti-omerically pure title compound, C(15)H(15)NO(6), the five-membered ring displays a twist conformation with the local axis through the N atom. The acetyl groups are perpendicular to the ring [dihedral angles 80.3 (1) and 89.3 (1)°] and project to opposite sides. The packing is governed by two weak C-H⋯O inter-actions, forming layers of mol-ecules parallel to the ab plane.

Veiws expressed in materials are those of the authors and do not necessarily reflect bank policy. This is the first book of a new series of publications of the Bulgar-ian National Bank entitled " Discussion Papers ". The series continues an old tradition of the Bulgarian National Bank to provide a forum for the discussion of different views and opinions on theoretical and practical aspects of t...