X‐Ray Structure Analysis of a Stable Dipole

Schaumann, Ernst; Röhr, Armin; Sieveking, Stefan; Walter, Wolfgang

doi:10.1002/anie.197504931

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Financial support by the Science Project of the Hebei Education Department (grant No. 2005350) (Heren et al, 2006;Hannan & Talukdar, 1992) and in zwitterionic forms (Amendola et al, 2005.;Lindley et al, 1977;Schaumann et al, 1975).…”

Section: Data Collectionmentioning

confidence: 99%

A zwitterionic form ofN-(4-pyridyl)benzenesulfonamide

Yu¹,

Chen²,

Li³

et al. 2007

Acta Cryst E

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Key indicators: single-crystal X-ray study; T = 294 K; mean (C-C) = 0.003 Å; disorder in main residue; R factor = 0.044; wR factor = 0.124; data-to-parameter ratio = 11.9.The title compound, C 11 H 10 N 2 O 2 S, crystallizes as a zwitterionic tautomer, N-(4-pyridinio)benzenesulfonamidate, with the pyridine N atom protonated and the amide N atom deprotonated. There is evidence for conjugation between the anionic N atom and the pyridinium ring. In the crystal structure, intermolecular N-HÁ Á ÁN hydrogen bonds link the molecules into chains along the c axis. Weak C-HÁ Á ÁO and C-HÁ Á Á interactions further stabilize the structure. organic compounds o3720 # 2007 International Union of Crystallography

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Section: Data Collectionmentioning

confidence: 99%

A zwitterionic form ofN-(4-pyridyl)benzenesulfonamide

Yu¹,

Chen²,

Li³

et al. 2007

Acta Cryst E

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“…For zwitterionic forms of N-arylbenzenesulfonamides, see: Yu et al (2007); Amendola et al(2005); Lindley et al (1977); Schaumann et al (1975). = 88.741 (6) V = 1266.3 (8) Å 3 Z = 4 Mo K radiation = 0.27 mm À1 T = 294 (2) K 0.30 Â 0.24 Â 0.20 mm…”

Section: Related Literaturementioning

confidence: 99%

2-Nitro-N-(4-pyridinio)benzenesulfonamidate

Yang

Liu

2007

Acta Cryst E

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Key indicators: single-crystal X-ray study; T = 294 K; mean (C-C) = 0.007 Å; R factor = 0.058; wR factor = 0.174; data-to-parameter ratio = 12.5.The title compound, C 11 H 9 N 3 O 4 S, crystallizes with two molecules in the asymmetric unit; each molecule exists as a zwitterion in the solid state. Intermolecular N-HÁ Á ÁN hydrogen bonds link the molecules into chains. Weak C-HÁ Á ÁO interactions further stabilize the crystal structure. Related literature ExperimentalCrystal data Data collectionBruker SMART 1K CCD areadetector diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 1996) T min = 0.924, T max = 0.948 6351 measured reflections 4357 independent reflections 2918 reflections with I > 2(I) R int = 0.026

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X‐Ray Structure Analysis of a Dialkylthioketene

Schaumann

Harto

Adiwidjaja

1976

Angew. Chem. Int. Ed. Engl.

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cubane-like molecules with distorted octahedral coordination around Te and Se, the lone pair being largely delocalized.Our investigations on Te'" iodide showed this compound to have a molecular structure in the solid which has not yet been observed in binary inorganic substances.Single crystals for X-ray structure analysis were obtained by repeated sublimation at 100°C in evacuated glass tubes of 5 cm length; the starting material was purified TeI,, prepared by reaction of concentrated aqueous solutions of telluric acid and hydrogen iodide"].TeI, crystallizes in the orthorhombic space group Pnma with the cell constants a = 13.635, b= 16.798, c = 14.624A, Z = 16 TeI,, d,=5.04, d,,,=~5.02 g/cm3 (literature values a= 13.54, b= 16.73, c = 14.48A[*]). The structure was solved from 3800 diffractometer data using Patterson methods and was refined to a conventional R factor of 5.3 %. Fig. 1. Molecular structure of telluriiim tetraiodide (Tel,), in the crystal.[3] D. J. H. Smith and S. Tripperr, J. Chem. SOC. Perkin Trans. I 1Y75, 963.A n g m . Chem. lnt. Ed. Engl. 1 Vo/. 15 (1976) No. I

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X‐Ray Structure Analysis of a Stable Dipole

Cited by 5 publications

References 8 publications

A zwitterionic form ofN-(4-pyridyl)benzenesulfonamide

A zwitterionic form ofN-(4-pyridyl)benzenesulfonamide

2-Nitro-N-(4-pyridinio)benzenesulfonamidate

X‐Ray Structure Analysis of a Dialkylthioketene

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