Naslov
Microporosity of a Guanidinium Organodisulfonate Hydrogen‐Bonded Framework

Autori
Brekalo, Ivana ; Deliz, David E. ; Barbour, Leonard J. ; Ward, Michael D. ; Friščić, Tomislav ; Holman, K. Travis

Izvornik
Angewandte Chemie International Edition (1433-7851) 59 (2020), 5; 1997-2002

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
gas sorption ; guanidinium sulfonates ; porosity ; porous molecular solids ; hydrogen-bonded organic frameworks

Sažetak
Guanidinium organosulfonates (GSs) are a large and well‐explored archetypal family of hydrogen‐bonded organic host frameworks that have, over the past 25 years, been regarded as nonporous. Reported here is the only example to date of a conventionally microporous GS host phase, namely guanidinium 1, 4‐benzenedisulfonate (p‐G2BDS). p‐G2BDS is obtained from its acetone solvate, AcMe@G2BDS, by single‐crystal‐to‐single‐crystal (SC‐SC) desolvation, and exhibits a Type I low‐temperature/pressure N2 sorption isotherm (SABET=408.7(2) m2 g−1, 77 K). SC‐SC sorption of N2, CO2, Xe, and AcMe by p‐G2BDS is explored under various conditions and X‐ray diffraction provides a measurement of the high‐pressure, room temperature Xe and CO2 sorption isotherms. Though p‐G2BDS is formally metastable relative to the “collapsed”, nonporous polymorph, np‐G2BDS, a sample of p‐G2BDS survived for almost two decades under ambient conditions. np‐G2BDS reverts to zCO2@p‐G2BDS or yXe@p‐G2BDS (y, z=variable) when pressure of CO2 or Xe, respectively, is applied.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA