| Literature DB >> 26351703 |
Gregor Kieslich1, Shohei Kumagai, Keith T Butler, Takuro Okamura, Christopher H Hendon, Shijing Sun, Masahiro Yamashita, Aron Walsh, Anthony K Cheetham.
Abstract
Polymorphism in formate-based dense metal-organic frameworks with the general formula ABX3 is predicted by quantum chemical calculations and confirmed experimentally. In particular [NH3NH2]Zn(HCOO)3 crystallizes in two different polymorphs, a perovskite-like framework and a chiral structure with hexagonal channels. A detailed thermodynamic analysis reveals that both structures are very close in free energy and that entropy driven effects are responsible for stabilizing the channel structure.Entities:
Year: 2015 PMID: 26351703 DOI: 10.1039/c5cc06190c
Source DB: PubMed Journal: Chem Commun (Camb) ISSN: 1359-7345 Impact factor: 6.222