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Journal of Chemical Crystallography

, Volume 37, Issue 7, pp 473–477 | Cite as

Solvent-induced Polymorphism of 2-[(2-Amino-phenylimino)-phenyl-methyl]-phenol

  • Anita Blagus
  • Branko Kaitner
Original Paper

Abstract

The title compound C19H16N2O crystallize as either triclinic or monoclinic polymorph depending on the solvent used. Polymorph [1] crystallizes from methanol in the space group P \( \mathop 1\limits^ - \) with unit cell dimensions: a = 8.723(2), b = 9.344(2), c = 10.544(2) Å, α = 71.54(2), ß = 78.74(2), γ = 74.15(2)°, and Z = 2. Polymorph [2] crystallizes from benzene with space group P21/n with unit cell dimensions: a = 10.230(3), b = 20.536(7), c = 14.563(4) Å, ß = 97.14(3)°, and Z = 8. The only similarity between molecules of [1] and two independent molecules of [2] can be found in almost co-planar phenyl moiety with chelate ring. Both structures are characterized with strong intramolecular O-H···N hydrogen bond. Whereas the molecular interconnections in [2] are based on van der Waals attractions between discrete molecules, molecules of [1] associate in dimers via intermolecular N-H···O hydrogen bonding by the operation of crystallographic centre of inversion.

Keywords

Solvent-induced polymorphism Schiff bases X-ray analysis Hydrogen bond Dimmer 

Notes

Acknowledgement

The authors are grateful for funding from the Ministry of Science, Education and Sports, Republic of Croatia (Grant No. 119-1193079-3069).

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Department of ChemistryJ.J. Strossmayer UniversityOsijekCroatia
  2. 2.Department of Chemistry, Laboratory of General & Inorganic Chemistry, Faculty of ScienceUniversity of ZagrebZagrebCroatia

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