Crystal structures of four co-crystals of (E)-1,2-di(pyridin-4-yl)ethene with 4-alk­oxy­benzoic acids: 4-meth­oxy­benzoic acid–(E)-1,2-di(pyridin-4-yl)ethene (2/1), 4-eth­oxy­benzoic acid–(E)-1,2-di(pyridin-4-yl)ethene (2/1), 4-n-propoxybenzoic acid–(E)-1,2-di(pyridin-4-yl)ethene (2/1) and 4-n-but­oxy­benzoic acid–(E)-1,2-di(pyridin-4-yl)ethene (2/1)

Tabuchi, Y.; Gotoh, K.; Ishida, H.

doi:10.1107/S2056989016017138

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 2
A partial packing diagram of compound (I)

, showing the tape structure formed by C—H⋯O and O—H⋯N hydrogen bonds (dashed lines). H atoms not involved in the hydrogen bonds have been omitted. [Symmetry code: (ii) −x, −y + 1, −z.]

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 72| Part 11| November 2016| Pages 1666-1671

https://doi.org/10.1107/S2056989016017138

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