Discrete Oligomers and Polymers of Chloride Monohydrate Can Form in Encapsulated Environments: Structures and Infrared Spectra of [Cl4(H2O)4] 4– and {[Cl(H2O)]–}∞

Type of content
Journal Article
Thesis discipline
Degree name
Publisher
Wiley
Journal Title
Journal ISSN
Volume Title
Language
eng
Date
2021
Authors
Senthooran, Rathiga
Curnow, Owen
Crittenden, Deborah
Abstract

A discrete tetrachloride tetrahydrate cluster, [Cl4(H2O)4]4−, was obtained with a partially-fluorinated triaminocyclopropenium cation, [C3(N(CH2CF3)2)(NEt2)(NPr2)]+. The cluster consists of a [Cl2(H2O)2]2− square with each Cl− coordinated by another H2O bridged to another Cl−. A 1D polymer of chloride monohydrate, {[Cl(H2O)]−}∞, was obtained with [C3(N(CH2CF3)2)2(NBuMe)]+. The tetrameric and polymeric structures were found to be computationally-unstable in the gas phase which indicates that an encapsulated environment is essential for their isolation. DFT and DFTB calculations were carried out on gas-phase [Cl4(H2O)4]4− to assist the infrared assignments. Anharmonically-corrected B3LYP transition frequencies were in close agreement with experiment, but DFTB models were only appropriate for qualitative interpretation. Solid-state DFTB calculations allowed the vibrational modes to be assigned. The results found are consistent with “discrete” chloride hydrates.

Description
Citation
Senthooran R, Curnow OJ, Crittenden DL (2021). Discrete Oligomers and Polymers of Chloride Monohydrate Can Form in Encapsulated Environments: Structures and Infrared Spectra of [Cl4(H2O)4] 4– and {[Cl(H2O)]–}∞. ChemPlusChem. 86(9). 1297-1306.
Keywords
X-ray diffraction, chloride, hydrate, infrared, solvate
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
03 Chemical Sciences
Fields of Research::34 - Chemical sciences::3402 - Inorganic chemistry::340202 - Crystallography
Fields of Research::34 - Chemical sciences::3401 - Analytical chemistry::340101 - Analytical spectrometry
Fields of Research::34 - Chemical sciences::3403 - Macromolecular and materials chemistry::340306 - Polymerisation mechanisms
Fields of Research::34 - Chemical sciences::3402 - Inorganic chemistry::340208 - Non-metal chemistry
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