6533b852fe1ef96bd12aaa6d

RESEARCH PRODUCT

Tris(1,10-phenanthroline)zinc(II) dichromate tetrahydrate

Marek WasielewskiJacek ZaleskiKrzysztof Ejsmont

subject

TetrahydrateHydrogen bondPhenanthrolinechemistry.chemical_elementGeneral ChemistryZincStaggered conformationCondensed Matter PhysicsIonchemistry.chemical_compoundCrystallographychemistryOctahedronGeneral Materials SciencePotassium chromate

description

The title compound, [Zn(C12H8N2)3][Cr2O7]·4H2O, was obtained by mixing 1,10-phenanthroline (phen), potassium chromate and zinc sulfate solutions. The asymmetric unit is composed of a [Zn(phen)3]2+ cation, a Cr2O72− anion and four water mol­ecules. The ZnII ion is in a distorted octahedral environment, coordinated by six N atoms from three phen mol­ecules. The cations are connected to anions by weak C—H⋯O hydrogen bonds, with shortest H⋯O distances of ca 2.27–2.33 A. The Cr2O72− anion is in a staggered conformation. Two of the four crystallographically independent water mol­ecules are ordered, and two others are disordered, each over two sites.

https://doi.org/10.1107/s1600536802006402