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In Situ Cryocrystallization of Diphenyl Ether:  C−H···π Mediated Polymorphic Forms

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posted on 06.10.2004, 00:00 by Angshuman R. Choudhury, Kabirul Islam, Michael T. Kirchner, Goverdhan Mehta, Tayur N. Guru Row
Polymorphism in diphenyl ether has been identified during in situ crystallization via single-crystal X-ray diffraction. Only weak inter- and intramolecular C−H···π interactions control the packing of the molecules in both crystal forms monoclinic centrosymmetric (P21/n) in form I and orthorhombic noncentrosymmetric (P212121) in form II.