Synthesis and crystal structure of K2Ni(IO3)4(H2O)2
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Updated: Oct 30, 2026
Effect of Microwave Synthesis Conditions on the Structure of Nickel Hydroxide Nanosheets
Published on: August 18, 2023
Robin Turnbull1, Pablo Salcedo-Abraira2, E Lora da Silva3,4
1Departamento de Física Aplicada-ICMUV, MALTA Consolider Team, Universidad de Valencia, 46100 Burjassot, Valencia, Spain.
Abstract:
K2Ni(IO3)4(H2O)2, a new nickel-containing iodate with a previously unreported composition, has been synthesised using a single-diffusion gel technique and structurally characterised by single-crystal X-ray diffraction. The compound adopts a known structure type within this family, containing trigonal pyramidal IO3- units with stereochemically active lone electron pairs, together with secondary I⋯O interactions and hydrogen bonding involving water molecules. The structural model and estimated band gap are supported by density functional theory calculations. Thermogravimetric analysis confirms the presence and amount of water, Raman spectroscopy identifies the characteristic vibrational modes of the iodate and hydroxyl groups, and optical absorption measurements provide an estimate of the band gap.
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