The alpha(2)-polymorph of salicylideneaniline

N-Salicylideneaniline (SA), C13H11NO, belongs to the large family of aromatic Schiff bases. It is of particular importance owing to its reversible photoreactivity. SA forms two photochromic polymorphs, both with two non-coplanar benzene rings. In addition, we have recently discovered a planar polymorph, named the β-polymorph, which will be discussed in a subsequent paper. We report here the structure of the α(2)-polymorph in the orthorhombic crystal system. This compound exhibits a strong intramolecular O-H••• N hydrogen bond and the dihedral angle between the two rings varies with temperature.


Published in:
Acta Crystallographica Section C-Crystal Structure Communications, 61, O317-O320
Year:
2005
ISSN:
0108-2701
Keywords:
Note:
Part 5 923NA Times Cited:0 Cited References Count:43
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 Record created 2006-03-07, last modified 2018-01-27

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