Crystallographic visualization of C3-hydrocarbon-induced structural transformation and guest encapsulation within a flexible coordination network.

ABSTRACT: Flexible coordination polymers that can self-adjust, via closed (nonporous) to open (porous) switching, to match the size/shape of guest molecules are of particular interest. Herein, we report that C3 hydrocarbons can trigger a flexible SIFSIX network, [Cu(SiF₆)(L)₂] _n (L = 1,4-bis(1-imidazolyl)benzene), SIFSIX-23-Cu, to switch from nonporous to partially open phases at 298 K with different gate opening pressures (propyne < propylene < propane). The single-crystal X-ray diffraction (SCXRD) measurements have succeeded in the crystallographic visualization of the C3-induced closed-to-open switching and the binding sites of gas molecules confined in the open phases. The results unambiguously showed that the closed phase can undergo adaptive struc

SUBMITTER: Qin SJ 

PROVIDER: S-EPMC12908027 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature