Dipotassium zinc tetra-iodate(V) dihydrate

Area of Science:

• Inorganic Chemistry
• Crystallography
• Solid-State Chemistry

Background:

• Potassium zinc iodate dihydrate (K(2)Zn(IO(3))(4)·2H(2)O) is a crystalline compound with potential applications in materials science.
• Understanding the precise atomic arrangement and bonding within such compounds is crucial for predicting and optimizing their properties.
• Previous structural data may be limited or require further refinement, necessitating detailed crystallographic analysis.

Purpose of the Study:

• To elucidate the detailed crystal structure of K(2)Zn(IO(3))(4)·2H(2)O.
• To identify the coordination environment of potassium (K), zinc (Zn), and iodine (I) atoms.
• To characterize the hydrogen bonding network and intermolecular interactions within the crystal lattice.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the crystal structure.
• Analysis of atomic positions, bond lengths, and coordination geometries.
• Identification and analysis of hydrogen bonds (O-H⋯O) and other interactions (O-H⋯I).

Main Results:

• The crystal structure of K(2)Zn(IO(3))(4)·2H(2)O was successfully determined, revealing two independent K and I atoms.
• Zinc atoms are coordinated by oxygen atoms and two water molecules in trans positions.
• Potassium, zinc, and water oxygen atoms occupy special positions on twofold symmetry axes, indicating specific symmetry elements.
• Strong O-H⋯O hydrogen bonds and O-H⋯I interactions were identified, contributing to the crystal's stability.
• The analyzed crystal sample was confirmed to be free of twinning, ensuring accurate structural determination.

Conclusions:

• The study provides a comprehensive structural description of K(2)Zn(IO(3))(4)·2H(2)O at the atomic level.
• The identified coordination and hydrogen bonding patterns offer insights into the compound's solid-state chemistry.
• This detailed structural information serves as a foundation for further research into the physical and chemical properties of potassium zinc iodate dihydrate.