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In the polymeric title compound, [Pb(C6H4NO2)2-C6H6N4S2)]n, the PbII ion is located on a twofold axis and coordinated by one N,N'-bidentate diaminobithiazole (DABT) ligand and four O-monodentate isonicotinate anions in a very distorted cis-PbN2O4 octahedral geometry. The carboxylate group of the isonicotinate anion bridges two PbII ions, forming a polymeric chain. The complete DABT molecule is generated by twofold symmetry; its two thiazole rings are twisted with a dihedral angle of 9.5 (2)°. There are no π-π stacking interactions in the title compound, but N—H…O and N—H…N hydrogen bonds help to stabilize the structure. [ABSTRACT FROM AUTHOR]

In the title compound, [Sr(C7H5O3)2(C12H8N2)2(H2O)2], the SrII ion is located on a twofold rotation axis and assumes a distorted square-antiprism SrN4O4 coordination geometry, formed by two phenanthroline (phen) ligands, two 2-hydroxybenzoate anions and two water molecules. Within the mononuclear complex molecule, intramolecular π–π stacking is observed between nearly parallel coordinated phen ligands, while normal intermolecular π–π stacking occurs between parallel phen ligands of adjacent complex molecules. Classic O—H...O and weak C—H...O hydrogen bonding helps to stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

The title compound, [Sr(C7H5O4)2(C12H8N2)2(H2O)2]·2C12H8N2·4H2O, consists of an SrII complex, uncoordinated phenanthroline (phen) molecules and solvent water molecules. The SrII ion is located on a twofold axis and is coordinated by two phen ligands, two dihydroxybenzoate anions and two water molecules in a distorted tetragonal antiprismatic geometry. Partially overlapped arrangements exist between parallel coordinated and parallel uncoordinated phen rings; the face-to-face separations between the former (coordinated) and the latter (uncoordinated) rings are 3.436 (13) and 3.550 (14) Å, respectively. This difference suggests the effect of metal coordination on π–π stacking between phen rings. [ABSTRACT FROM AUTHOR]

The eplerenone molecule of the title compound, C24H30O6·C4H8O, contains three six-membered rings, two five-membered rings and one three-membered ring. In the crystal structure, the eplerenone molecules are linked via C—H...O hydrogen bonds, forming a 303 Å3 cavity, which is occupied by two disordered solvent THF molecules. [ABSTRACT FROM AUTHOR]