CRYSTAL STRUCTURE OF bis[Ba(Aet)(OH2)5]bis(Aet)×4H2O
È. B. Miminoshvili1, K. È. Miminoshvili1, L. A. Beridze2, S. R. Zazashvili2
1Georgian Technical University, Tbilisi, Georgia
2Tbilisi State Medical University, Tbilisi
Keywords: complex compounds, X-ray crystallography, Ba(II), Sr(II), ethazole, sulfanilamides
Abstract
An X-ray crystallographic study is conducted of single crystals with the composition [Ba2(Aet–)2×10(H2O)]2+×2(Aet–)×4H2O, where Aet– = (C10H11N4O2S2)– is the ethazole (2-( para-aminobenzenesulfamido)-5-ethyl-1,3,4-tiadiazole) anion. The crystals are monoclinic; the space group is P21/c, Z = 2; а = 9.793(2) Å, b = 15.408(4) Å, and c = 22.553(6) Å; β = 94.98(2)°; and R = 0.047. The independent part of the compound’s structural formula, [Ba(Aet)(OH2)5](Aet)×2H2O, is isostructural with the analogous compound with the Sr atom. The ethazole anion is coordinated to the complexing metal atom by oxygen and nitrogen atoms to form a four-membered ring.
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