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RESEARCH PRODUCT
Phase transition in bis(ethyldimethylammonium) pentachloroantimonate(III)
M. BujakJ. Zaleskisubject
CrystallographyPhase transitionPolymorphism (materials science)StereochemistryChemistryHydrogen bondMoleculeOrthorhombic crystal systemGeneral MedicineCrystal structureTriclinic crystal systemGeneral Biochemistry Genetics and Molecular BiologyMonoclinic crystal systemdescription
The crystal structure of a new member of the alkylammonium chloroantimonate family, namely bis-(ethyldimethylammonium) pentachloroantimonate(III), [C 2 H 5 NH(CH 3 ) 2 ] 2 [SbCl 5 ], was determined at room temperature. The anionic sublattice consists of isolated distorted square-pyramidal [SbCl 5 ] 2- units and two crystallographically inequivalent disordered ethyldimethylammonium cations connected to anions by NH...Cl hydrogen bonds. The disorder is realised by the presence of two positions for all C, N and H atoms, and is explained as being a result of the overall reorientation of cations along the long axis of the molecule. One second-order phase transition was found at ca 160 K and results in a lowering of the symmetry from orthorhombic to monoclinic or triclinic.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-11-15 | Acta Crystallographica Section C-Crystal Structure Communications |