Reversible Temperature-Stimulated Single-Crystal-to-Single-Crystal Conformational Polymorph Transformation in Cadmium(II) Coordination Trimer with a Water Vapor Sorption/Desorption Potential
| Autor: | Mateja Pisačić, Boris-Marko Kukovec, Clive L. Oliver, Nabanita Chatterjee, Marijana Đaković, Ivan Kodrin, Nives Matijaković |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Cadmium
Materials science Adsorption desorption 010405 organic chemistry chemistry.chemical_element Trimer General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences Crystal Crystallography Transformation (genetics) chemistry General Materials Science single-crystal-to-single-crystal transformation conformational polymorph cadmium(II) trimer pyridine-4-propanamide water sorption/desorption Single crystal Water vapor |
| Zdroj: | Crystal Growth & Design. 20:401-413 |
| ISSN: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.9b01322 |
| Popis: | A crystalline cadmium(II) coordination trimer with pyridine-4-propanamide (4-propy), [Cd3Cl4(H2O)4(4-propy)6](CH3CH2COO)2, readily responds to external stimuli while preserving crystal integrity. Two polymorphic forms, Polymorph-I (triclinic form) and Polymorph-II (monoclinic form), undergo a reversible single- crystal-to-single-crystal conformational polymorph transformation upon temperature change, while the triclinic form (Polymorph-I) additionally shows substantial reversible sorption/desorption potential via two pathways, in response to stimulation by (i) elevated temperature, and (ii) reduced pressure. The elucidation of the conformational transformation via a variety of ex situ and in situ methods (SCXRD, VT-PXRD, TG/DSC and VT- IR), complemented by in-depth theoretical studies, suggested that the conformational transformation might be a process that occurs slowly and continuously over a wider temperature range, with different processes (distinctive conformational changes) taking place over different temperature intervals. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|