2-Bromo-N-(p-toluenesulfonyl)pyrrole

Abstract

Key indicatorsSingle-crystal X-ray study T = 293 K Mean '(C±C) = 0.006 A Ê Disorder in main residue R factor = 0.046 wR factor = 0.089 Data-to-parameter ratio = 16.8For details of how these key indicators were automatically derived from the article, seeThe title compound, C 11 H 10 BrNO 2 S, crystallizes in a columnar structure consisting of interdigitated CÐHÁ Á ÁO doubly bonded chains. The columns pack in a herring-bone fashion and are linked through additional weak hydrogen bonding. The structure is very nearly isomorphous to one in which the bromo substituent on the pyrrole ring is replaced by a chloromethyl group, in spite of the difference in size, shape and interactions involving these two groups.

N-(p-Nitrophenylsulfonyl)-1H-pyrrole

“…In the pyrrole ring, there is a pseudo-twofold axis passing through atom C2 and the mid-point of the N1ÐC4 bond, as is evident from the torsion angles (Table 1). The geometrical features of (I) are similar to those of 1-phenylsulfonylpyrrole (Beddoes et al, 1986), 3-benzoyl-1-tosylpyrrole (Erickson et al, 1992), N-(1-benzenesulfonyl-4-acetylpyrrol-3-yl)acetamide (Grossie et al, 2001) and 2-bromo-N-(p-toluenesulfonyl)pyrrole (Knight et al, 2003).…”

Bis(1-tosyl-2-pyrrolyl)ethyne

“…The pyrrole rings are experimentally planar, but offset 0.318 1 The structures of related tosylpyrroles, i.e. 2-bromo-N-(p-toluenesulfonyl)pyrrole (Abell et al, 1998) and 2-chloromethyl-1-(4-methylphenylsulfonyl)pyrrole (Knight et al, 2003) have been reported. A similar compound containing the bis(2-pyrrolyl)ethyne core (Tanui et al, 2008) lies on a twofold axis rather than an inversion center, and has its pyrrole groups twisted by 40.49 (4)° from co-planarity.…”

“…For related structures, see Abell et al (1998); Knight et al (2003); Tanui et al (2008). For related literature, see: Vogel (1996); Chinchilla & Najera (2007); Desiraju & Steiner (1999).…”

Decoherence in a one-dimensional quantum walk

“…The effect of entanglement of the coin subspace on the QW [14,19,24], entanglement between the coin and position subspaces [18,25,26] and the QW as the entanglement generators [27,28] are examples of these studies. Beside of all theoretical studies, experimental implementation and realization of the QW is another interesting subject for researchers [29,30,31,32,33,34].…”