Patterns of hydrogen bonding in mono- and di-substituted N-arylpyrazinecarboxamides

Wardell, S.M.S.V.; de Souza, M.V.N.; Vasconcelos, T.R.A.; Ferreira, M.L.; Wardell, J.L.; Low, J.N.; Glidewell, C.

doi:10.1107/S0108768107051804

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 7
Stereoviews of the hydrogen-bonded sheets in (XVII) and (XXIV): (a) the sheet, parallel to (101), of R₂²(14) and R₆⁶(34) rings in the 2-nitrophenyl compound (XVII); (b) the sheet, parallel to ( $[10\bar 1]$ ), of R₄⁴(30) rings in the 2-methyl-5-nitrophenyl compound (XXIV). For the sake of clarity, the H atoms not involved in the motifs shown have been omitted.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 64| Part 1| January 2008| Pages 84-100

doi:10.1107/S0108768107051804

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