Crystal structures of three anhydrous salts of the Lewis base 1,8-di­aza­bicyclo­[5.4.0]undec-7-ene (DBU) with the ring-substituted benzoic acid analogues 4-amino­benzoic acid, 3,5-di­nitro­benzoic acid and 3,5-di­nitro­salicylic acid

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 5
The packing of the hydrogen-bonded cation-anion pairs in the unit cell of (II)

, viewed along a. The minor-component disordered atoms and the non-associative H atoms have been omitted.

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

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