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The low-temperature phase of morpholinium tetra-fluoro-borate.

Owczarek M, Szklarz P, Jakubas R, Lis T - Acta Crystallogr Sect E Struct Rep Online (2008)

Bottom Line: Hydrogen-bonded morpholinium cations form chains along the [100] direction.The BF(4) (-) anions are connected to these chains by N-H⋯F hydrogen bonds.In the crystal structure, two different layers perpendicular to the [001] direction can be distinguished, which differ in the geometry of the hydrogen bonds between cationic and anionic species.

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Affiliation: Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland.

ABSTRACT
The crystal structure of the low-temperature form of the title compound, C(4)H(10)NO(+)·BF(4) (-), was determined at 80 K. Two reversible phase transitions, at 158/158 and 124/126 K (heating/cooling), were detected by differential scanning calorimetry for this compound, and the sequence of phase transitions was subsequently confirmed by single-crystal X-ray diffraction experiments. The asymmetric unit at 80 K consists of three BF(4) (-) tetra-hedral anions and three morpholinium cations (Z' = 3). Hydrogen-bonded morpholinium cations form chains along the [100] direction. The BF(4) (-) anions are connected to these chains by N-H⋯F hydrogen bonds. In the crystal structure, two different layers perpendicular to the [001] direction can be distinguished, which differ in the geometry of the hydrogen bonds between cationic and anionic species.

No MeSH data available.


Projection of the crystal packing along [100].
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Fap2: Projection of the crystal packing along [100].


The low-temperature phase of morpholinium tetra-fluoro-borate.

Owczarek M, Szklarz P, Jakubas R, Lis T - Acta Crystallogr Sect E Struct Rep Online (2008)

Projection of the crystal packing along [100].
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2961037&req=5

Fap2: Projection of the crystal packing along [100].
Bottom Line: Hydrogen-bonded morpholinium cations form chains along the [100] direction.The BF(4) (-) anions are connected to these chains by N-H⋯F hydrogen bonds.In the crystal structure, two different layers perpendicular to the [001] direction can be distinguished, which differ in the geometry of the hydrogen bonds between cationic and anionic species.

View Article: PubMed Central - HTML - PubMed

Affiliation: Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland.

ABSTRACT
The crystal structure of the low-temperature form of the title compound, C(4)H(10)NO(+)·BF(4) (-), was determined at 80 K. Two reversible phase transitions, at 158/158 and 124/126 K (heating/cooling), were detected by differential scanning calorimetry for this compound, and the sequence of phase transitions was subsequently confirmed by single-crystal X-ray diffraction experiments. The asymmetric unit at 80 K consists of three BF(4) (-) tetra-hedral anions and three morpholinium cations (Z' = 3). Hydrogen-bonded morpholinium cations form chains along the [100] direction. The BF(4) (-) anions are connected to these chains by N-H⋯F hydrogen bonds. In the crystal structure, two different layers perpendicular to the [001] direction can be distinguished, which differ in the geometry of the hydrogen bonds between cationic and anionic species.

No MeSH data available.