LeRoy Peterson

Tris(1,10-phenanthroline)cobalt(II) triiodide

The asymmetric unit of the title compound, [Co(C12H8N2)3](I3)2, contains one [Co(1,10-phenanthroline)3]2+ cation, half each of two centrosymmetric triiodide anions, and one complete triiodide anion. The title compound was synthesized solvothermally from Co(NO3)2, 1,10-phenanthroline, and SnI2, where the SnI2 reagent serves only as a source of I atoms.

Poly[[(μ-2,2'-bipyrimidine-κ 4 N 1 ,N 1 ':N 3 ,N 3 ')(μ-sulfato-κ 2 O:O')zinc(II)] monohydrate]

In the title compound, {[Zn(SO4)(C8H6N4)]·H2O}n, the ZnII atom is in a distorted octahedral environment. The ZnII atoms are bridged by both 2,2′-bipyrimidine and sulfate ligands, thus forming a three-dimensional polymeric metal–organic solid that contains uncoordinated water molecules in the interstitial space. O—H⋯O hydrogen bonding consolidates the crystal structure.

Tetra­aqua­bis(3-fluoro­pyridine-4-carboxyl­ato-κN)zinc(II) dihydrate

In the title compound, [Zn(C6H3FNO2)2(H2O)4]·2H2O, the ZnII atom is octahedrally coordinated in a ZnO4N2 environment by two 3-fluoropyridine-4-carboxylate (3-fpy4-cbx) ligands and four water molecules. The [Zn(3-fpy4-cbx)2(H2O)4] molecules form a three-dimensional network through strong O—H⋯O and weak O—H⋯F hydrogen bonds between 3-fpy4-cbx and water molecules. The crystal used for data collection was a twin, with the twin law corresponding to a 180° rotation about the real-space [001] axis. The major twin fraction refined to 0.795 (1).

Diaquabis(5-fluoro-2-hydroxybenzoato-κO 1 )zinc(II)

The title compound, [Zn(C7H4FO3)2(H2O)2], is a monomeric ZnII complex. The ZnII atom, which lies on a twofold rotation axis, is situated in a distorted tetrahedral environment composed of two monodentate carboxlyate O atoms and two water O atoms. O—H⋯O hydrogen bonds link these units, forming sheets that are stacked along the c axis.

Tetra­quabis(5-fluoro­saccharinato)nickel(II)

In the centrosymmetric title complex, [Ni(C7H3FNO3S)2(H2O)4], the NiII atom exhibits a slightly distorted trans-NiN2O4 octahedral coordination. The nitrogen donors are provided by two 5-fluorosaccharinate ligands and the oxygen donors are provided by four water molecules. The crystal structure features O—H⋯O and bifurcated O—H⋯(F,O) hydrogen bonds, the latter involving the F atom of the 5-fluorosaccharinate ligand.