Leila M. Foroughi, , , Andrew J. Bennett, , , Josephine L. Yeh, , and , Adam J. Matzger*,
{"title":"Hydroxylammonium Chloride Cocrystals: Structural and Hygroscopicity Trends","authors":"Leila M. Foroughi, , , Andrew J. Bennett, , , Josephine L. Yeh, , and , Adam J. Matzger*, ","doi":"10.1021/acs.cgd.5c00523","DOIUrl":null,"url":null,"abstract":"<p >Extreme hygroscopicity presents challenges in solids handling. For example, hydroxylammonium nitrate, which is used in energetics applications, is typically deployed in solution due to the deliquescence of the compound under ambient conditions. Hydroxylammonium is also used as a counterion in a variety of salts. To elucidate the supramolecular chemistry of the hydroxylammonium cation, its chloride salt was experimentally tested for cocrystallization using 20 potential coformers; 6 of these yielded a total of 11 ionic cocrystals that were characterized using single crystal X-ray diffraction and Raman spectroscopy. Hydroxylammonium donates four hydrogen bonds and sp<sup>2</sup> nitrogen or <i>N</i>-oxide functionalities are common acceptors from the cation. Analysis of the hydrogen bonding revealed the hydroxylammonium OH typically serves as the stronger hydrogen bond donor compared to NH<sub>3</sub><sup>+</sup>. The impact of cocrystallization on hygroscopicity was studied relative to hydroxylammonium chloride with 9 of the 11 cocrystals exhibiting a decrease in hygroscopicity.</p>","PeriodicalId":34,"journal":{"name":"Crystal Growth & Design","volume":"25 19","pages":"7903–7910"},"PeriodicalIF":3.4000,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystal Growth & Design","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.cgd.5c00523","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Extreme hygroscopicity presents challenges in solids handling. For example, hydroxylammonium nitrate, which is used in energetics applications, is typically deployed in solution due to the deliquescence of the compound under ambient conditions. Hydroxylammonium is also used as a counterion in a variety of salts. To elucidate the supramolecular chemistry of the hydroxylammonium cation, its chloride salt was experimentally tested for cocrystallization using 20 potential coformers; 6 of these yielded a total of 11 ionic cocrystals that were characterized using single crystal X-ray diffraction and Raman spectroscopy. Hydroxylammonium donates four hydrogen bonds and sp2 nitrogen or N-oxide functionalities are common acceptors from the cation. Analysis of the hydrogen bonding revealed the hydroxylammonium OH typically serves as the stronger hydrogen bond donor compared to NH3+. The impact of cocrystallization on hygroscopicity was studied relative to hydroxylammonium chloride with 9 of the 11 cocrystals exhibiting a decrease in hygroscopicity.
期刊介绍：
The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials.
Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.
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