1,4,7,10-tetraoxacyclododecane-acetone thiosemicarbazone (1/2)

In the centrosymmetric formula unit of the title complex, C8H16O4. 2C(4)H(9 )N(3)S, the 1,4,7,10-tetraoxacyclododecane molecule adopts the biangular [6 6] conformation and the thiosemicarbazone molecules are linked to the macro cycle via a long and appreciably bent N-N-H ... O hydrogen bond [N ... O 2. 992(2) Angstrom and N-H ... O 158(2)degrees]. These units are associated in to sheets by two additional hydrogen bonds, N-H ... O and N-H ... S, origin ating from the NH2 group and utilizing the thioureido S atom or the second crystallographically independent ether O atom as accepters.