3-Cyclohexylaminopropane-1-sulfonic acid hemihydrate

Butcher, Ray J.; Deschamps, Jeffrey R.

doi:10.1107/s1600536806030650

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2016

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“…Amino-benzenesulfonic acids are used extensively in the preparation of azo dyes and pigments (Christie, 2015). Their crystal structures tend to be zwitterionic with a negatively charged sulfonate and protonation of the amine to give NH 3 + (Smith et al, 2006;Butcher & Deschamps, 2006;Ś ledź et al, 2010).…”

Section: Structure Descriptionmentioning

confidence: 99%

4-Ammonio-5-methoxy-2-methylbenzenesulfonate

Kennedy

Moraes

2016

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The title compound, C8H11NO4S, crystallizes as a zwitterion, with the negatively charged benzenesulfonate group and the positively charged NH3+ group in mutually para positions. All the non-H atoms, except for one O atom of the sulfonate group, lie on a crystallographic mirror plane (Z0 = 1/2). In the crystal, the hydrogen-bonding structure is two-dimensional, propagating in the c-axis direction through a bifurcated hydrogen bond between the NH3+ and the SO3 groups, and in the b-axis direction through an R2 2(16) ring motif involving the same functional groups. This latter hydrogen bonding is supported by offset –interactions [intercentroid distance = 8114 (4) A ° ]

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Section: Structure Descriptionmentioning

confidence: 99%