Synthesis and Characterisation of New Arsonium Salts and Crystal Structures of Trimethylarsonium Undecafluorodiarsenate (CH3)3AsH+As2F11− and Trimethylarsonium Hexafluoroantimonate (CH3)3AsH+SbF6−

Minkwitz, R.; Hirsch, Claudia; Berends, Thorsten

doi:10.1002/(sici)1099-0682(199912)1999:12<2249::aid-ejic2249>3.0.co;2-1

Cited by 28 publications

(26 citation statements)

References 24 publications

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“…Compared to the values reported in the literature, they are typical for an [SbF 6 ] À anion, with it displaying a slightly distorted octahedral coordination. [15][16][17][18] The Sb1-F2 and Sb1i-F2i bonds, which are involved in hydrogen bonding, are slightly longer than the other Sb À F bonds.…”

Section: Crystal Structure Of [(Ho) 2 Cc(oh) 2 ][Sbf 6 ]mentioning

confidence: 99%

The Tetrahydroxydicarbenium Cation [(HO)₂CC(OH)₂]²⁺: Synthesis and Structure

et al. 2018

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Oxalic acid forms in superacidic solutions HF/MF5 (M = As, Sb) its corresponding mono‐ and diprotonated salts [HOOCC(OH)2][MF6] and [(HO)2CC(OH)2][MF6]2 (M = As, Sb). The number of protonations is strongly dependent on the stoichiometric ratio of the Lewis acid with regard to oxalic acid. Mono‐ and diprotonated salts were characterized by vibrational spectroscopy and in the case of [HOOCC(OH)2][AsF6] (1) and [(HO)2CC(OH)2][SbF6]2 (4) by a single‐crystal X‐ray structure analysis. The salts crystallize in the monoclinic space groups P21/c and P21/n with eight, respectively four, formula units per unit cell. The vibrational spectra were compared to quantum chemical calculations of the cations [HOOCC(OH)2]+ and [(OH)2CC(OH)2]2+⋅4HF. In addition to this, an MEP analysis together with the NPA charges of [(OH)2CC(OH)2]2+, [(OH)2CC(OH)2]2+⋅6HF and oxalic acid were calculated to locate the positive charge. The protonation of oxalic acid does not lead to a remarkable change of the C‐C bond length, which is discussed for the entire series of the oxalic skeleton, starting with the dianion and ending with the tetrahydroxy dication.

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Section: Crystal Structure Of [(Ho) 2 Cc(oh) 2 ][Sbf 6 ]mentioning

confidence: 99%

The Tetrahydroxydicarbenium Cation [(HO)₂CC(OH)₂]²⁺: Synthesis and Structure

et al. 2018

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“…[The anion (As 2 F 11 ) – is much less frequently observed than (Sb 2 F 11 ) – , here it appears to have a slightly asymmetric and bent bridge with r As–F = 188.5(3), 193.0(3), and δ As–F–As = 155.7(2)° bridge]. Possibly its first observation occurred in the ion pair [(CH 3 ) 3 AsH] + [As 2 F 11 ] – 18…”

Section: Resultsmentioning

confidence: 85%

¹³C‐Detected Through‐Bond Correlation Experiments for Protein Resonance Assignment by Ultra‐Fast MAS Solid‐State NMR

et al. 2013

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We present two sequences which combine ((1)H,(15)N) and ((15)N,(13)C) selective cross-polarization steps with an efficient variant of the J-based homonuclear transfer scheme, in which a spin-state-selective (S(3)E) block is incorporated to improve both resolution and sensitivity in the direct (13)C dimension. We propose these two sequences as a part of a suite of four N-C correlation experiments allowing for the assignment of protein backbone resonances in the solid state. We illustrate these experiments under ultra-fast magic angle spinning conditions on two samples of microcrystalline dimeric human superoxide dismutase (SOD, 153×2 amino acids), in its diamagnetic ("empty", Zn(II)) and paramagnetic (Cu(II), Zn(II)) states.

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“…In contrast, the trimethylarsonium cation has been characterized only twice. In both [(CH 3 ) 3 AsH][As 2 F 11 ] and [(CH 3 ) 3 AsH][SbF 6 ] (Minkwitz et al, 1999), relatively large counteranions are needed to stabilize the [(CH 3 ) 3 AsH] + cations in the solid state.…”

Section: Commentmentioning

confidence: 99%

Trimethylarsonium iodide

Almsick

2005

Acta Cryst E

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Synthesis and Characterisation of New Arsonium Salts and Crystal Structures of Trimethylarsonium Undecafluorodiarsenate (CH3)3AsH+As2F11− and Trimethylarsonium Hexafluoroantimonate (CH3)3AsH+SbF6−

Cited by 28 publications

References 24 publications

The Tetrahydroxydicarbenium Cation [(HO)₂CC(OH)₂]²⁺: Synthesis and Structure

The Tetrahydroxydicarbenium Cation [(HO)₂CC(OH)₂]²⁺: Synthesis and Structure

¹³C‐Detected Through‐Bond Correlation Experiments for Protein Resonance Assignment by Ultra‐Fast MAS Solid‐State NMR

Trimethylarsonium iodide

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Synthesis and Characterisation of New Arsonium Salts and Crystal Structures of Trimethylarsonium Undecafluorodiarsenate (CH3)3AsH+As2F11− and Trimethylarsonium Hexafluoroantimonate (CH3)3AsH+SbF6−

Cited by 28 publications

References 24 publications

The Tetrahydroxydicarbenium Cation [(HO)2CC(OH)2]2+: Synthesis and Structure

The Tetrahydroxydicarbenium Cation [(HO)2CC(OH)2]2+: Synthesis and Structure

13C‐Detected Through‐Bond Correlation Experiments for Protein Resonance Assignment by Ultra‐Fast MAS Solid‐State NMR

Trimethylarsonium iodide

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Product

Resources

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The Tetrahydroxydicarbenium Cation [(HO)₂CC(OH)₂]²⁺: Synthesis and Structure

The Tetrahydroxydicarbenium Cation [(HO)₂CC(OH)₂]²⁺: Synthesis and Structure

¹³C‐Detected Through‐Bond Correlation Experiments for Protein Resonance Assignment by Ultra‐Fast MAS Solid‐State NMR