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Issue 6, 2009
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Probing atomic level structural transformation in O–H⋯N heterosynthon crystal

Mujeeb Khan,a  Volker Enkelmanna  and  Gunther Brunklaus*a 
Author affiliations

* Corresponding authors

a Max-Planck-Institut für Polymerforschung, Postfach 3148, Mainz, Germany
E-mail: brunklaus@mpip-mainz.mpg.de

Abstract

Structural changes of resorcinol (res) and trans-1,2-bis(4-pyridyl)ethylene (bpe) co-crystals during [2 + 2] photodimerization were monitored by means of single crystal X-ray analysis. The crystals lost their integrity with increasing conversion indicating an interesting case of a non-ideal single-crystal-to-single-crystal transformation. The 2(bpe) : 2(res) heterosynthon yielded two different polymorphs upon photodimerization, i.e. the dimer obtained via single-crystal-to-single-crystal transformation (as-dimerized dimer) consists of triclinic P-1 space group which upon re-crystallization adopted a stable conformation with monoclinic P21/n space group.

Graphical abstract: Probing atomic level structural transformation in O–H⋯N heterosynthon crystal

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Publication details

The article was received on 19 Nov 2008, accepted on 11 Feb 2009 and first published on 03 Mar 2009


Article type: Communication
DOI: 10.1039/B820732A
Citation: CrystEngComm, 2009,11, 1001-1005
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    Probing atomic level structural transformation in O–H⋯N heterosynthon crystal

    M. Khan, V. Enkelmann and G. Brunklaus, CrystEngComm, 2009, 11, 1001
    DOI: 10.1039/B820732A

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