Dichlorido(4′-phenyl-2,2′:6′,2′′-ter­pyridyl)zinc

The title compound, [ZnCl₂(C₂₁H₁₅N₃)], was obtained from the reaction of ZnCl₂·4H₂O with 4′-phenyl­terpyridine (L) and disodium 2,6-dipicolinate. The Zn²⁺ cation is ligated by the N atoms of the tridentate L ligand and two chloride anions, forming a ZnN₃Cl₂ polyhedron with a distorted trigonal–bipyramidal coordination geometry. In the crystal, nonclassical C—H...Cl hydrogen bonds are observed.

Poly[[μ₁₀-4,4′-(ethane-1,2-diyldi­oxy)dibenzoato]dipotassium]

The title salt, [K₂(C₁₆H₁₂O₆)]_n, was obtained by the reaction of 1,2-bis­[4-(ethyl-carbox­yl)-phenox­yl]ethane with KOH in water. The anion lies on a crystallographic inversion center, which is located at the mid-point of the central C—C bond. The K⁺ cation is coordinated by six O atoms, two from the chelating carboxyl­ate group of the anion and four from four neighboring and monodentately binding anions, giving rise to an irregular [KO₆] coordination polyhedron. The coordination mode of the cation leads to the formation of K/O layers parallel to (100). These layers are linked by the nearly coplanar anions (r.m.s. deviation of 0.064 Å of the carboxyl, aryl and O—CH₂ groups from the least-squares plane) into a three-dimentional network.