Nuclear Quadrupole Interaction of 23Na and 11B and the Crystal Structure of NaBF4

Weiss, Al.; Zohner, K.

doi:10.1002/pssb.19670210125

Cited by 32 publications

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“…Klinkenberg further reports that NaBF, (and by inference, NaBF30H) crystallizes in the orthorhombic system, space group Cmcm and is isomorphous with NaCIO,. This result for NaBF, has since been verified (3)(4)(5)(6).…”

Section: Introductionmentioning

confidence: 57%

The crystal and molecular structure of NaBF₃OH

Clark¹,

Lynton²

1970

Can. J. Chem.

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The crystal and molecular structure of sodium hydroxytrifluoborate, NaBF30H, has been established by X-ray analysis. This compound crystallizes in the hexagonal system, space group P63 with cell parameters a = 8.0g4 A and c = 7.958 A. There are 6 molecules in the unit cell. Atomic parameters have been obtained from a block-diagonal least-squares refinement using anisotropic temperature parameters for boron and fluorine, and isotropic temperature parameters for sodium. The final agreement residual for 195 observed reflections is R = 0.090.The [BF30H]-anions are distorted tetrahedra. It was not possible to distinguish between the positions of the fluorine atoms and the isoelectronic hydroxyl group.

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Section: Introductionmentioning

confidence: 57%

The crystal and molecular structure of NaBF₃OH

Clark¹,

Lynton²

1970

Can. J. Chem.

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“…A structural phase transition in NaBF4 has been reported by Amirthalingam et al (1980) using differential scanning calorimetry, optical microscopy and X-ray techniques. They concluded that the low temperature orthorhombic phase transforms into a rhombohedral phase above 535 K, supporting the earlier ^^B and ^^Na NMR results (Weiss and Zohner, 1967). Pistorius et al (1969) have studied the phase diagram of NaBF4 at high pressures and temperatures employing DTA methods.…”

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confidence: 70%

Crystal growth and physical properties of orthorhombic sodium fluoroborate, NaBF₄

Gnanam¹,

Wang²,

Haussühl³

1986

Zeitschrift Für Kristallographie - Crystalline Materials

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Molecular Motion in Solid [Sb(CH₃)₄]X, X = Cl, Br, I, PF₆, and BF₄. ¹H, ¹⁹F NMR Second Moment and Crystal Structure

Burbach

Dou

Weiß

1989

Ber Bunsenges Phys Chem

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G. Burbach et al.: Molecular Motion in Solid [Sb(CH3)4]X, X = CI, Br, I, PFh, and BF4 etc. Solid [Sb(CH,),]X, X = Cl, Br, I, PF6, and BF4. _________~_ Molecular Motion inCoriiples Compounds j Crystal Structure ))) Molecular Dynamics 1 Pllasr Tronsirioiis / Spectroscopy. Nuclear Maglietic ResonanceThe tumbling motion of the tetramethylstibonium cation [Sb(CH,)J' has been studied in the ionic compounds [Sh(CHJ),]X X = CI.Br, 1, PF6, and BF,, by measurement of the second moment of the protons M,('H) in the temperature range 95 I 7;'K I 340.-At room temperature the iodide, hexafluorophosphate, and tetrafluoroborate crystallize with hexagonal unit cell. The crystal structure of [Sb(CH&]I was determined by singlc crystal X-ray diffraction: a = 728.4(3) prn, c = 1037.7(5) pm. space group Cg -P6? mc, 2 = 2.-Ml ( ' i f ) of [Sb(CHj)4]I shows cation tumbling at T > 320 K. The methyl groups are rotating about their threefold axes in the wholc temperature range studied. -In [Sb(CH3),]PF6 and [Sb(CH3)JBF4 both, cation and anion are tumbling at T 2 259 K and T 2 248 K, respectively. as seen by M?('H) and MZ("F). A jump in the second moments and differential thermal analysis (DTA) of [Sb(CH,),]BF, reveals a solid-solid phase transition with hysteresis (width 28 K). Activation energies for the tumbling motion of the tetramethylstibonium cation have been determined.

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Nuclear Quadrupole Interaction of ²³Na and ¹¹B and the Crystal Structure of NaBF₄

Abstract: The nuclear quadrupole interaction of *3Na and llB in NaBF, is investigated between 23 and 260 "C using single crystals and crystalline powder respectively. At 23 "C the folbwing results are found: e2 q Q/h (ZJNa) = 1008.4 kHz; e2 q Q/h ("B) = 59.9 kHz; r] (Na) = = 0.

Cited by 32 publications

References 32 publications

The crystal and molecular structure of NaBF₃OH

The crystal and molecular structure of NaBF₃OH

Crystal growth and physical properties of orthorhombic sodium fluoroborate, NaBF₄

Molecular Motion in Solid [Sb(CH₃)₄]X, X = Cl, Br, I, PF₆, and BF₄. ¹H, ¹⁹F NMR Second Moment and Crystal Structure

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Nuclear Quadrupole Interaction of 23Na and 11B and the Crystal Structure of NaBF4

Abstract: The nuclear quadrupole interaction of *3Na and llB in NaBF, is investigated between 23 and 260 "C using single crystals and crystalline powder respectively. At 23 "C the folbwing results are found: e2 q Q/h (ZJNa) = 1008.4 kHz; e2 q Q/h ("B) = 59.9 kHz; r] (Na) = = 0.

Cited by 32 publications

References 32 publications

The crystal and molecular structure of NaBF3OH

The crystal and molecular structure of NaBF3OH

Crystal growth and physical properties of orthorhombic sodium fluoroborate, NaBF4

Molecular Motion in Solid [Sb(CH3)4]X, X = Cl, Br, I, PF6, and BF4. 1H, 19F NMR Second Moment and Crystal Structure

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Nuclear Quadrupole Interaction of ²³Na and ¹¹B and the Crystal Structure of NaBF₄

The crystal and molecular structure of NaBF₃OH

The crystal and molecular structure of NaBF₃OH

Crystal growth and physical properties of orthorhombic sodium fluoroborate, NaBF₄

Molecular Motion in Solid [Sb(CH₃)₄]X, X = Cl, Br, I, PF₆, and BF₄. ¹H, ¹⁹F NMR Second Moment and Crystal Structure