"The Crystal Packing of 4,7-Dichloro- and 4,7-Dibromobenzo[C]Furazan 1-" by D. Britton, Frank B. Mallory et al.
 

Document Type

Article

Version

Publisher's PDF

Publication Title

Acta Crystallographica Section C

Volume

58

Publication Date

2002

Abstract

The molecular structures of 4,7-dichlorobenzo[c]furazan 1-oxide, C6H2Cl2N2O2, (I), and 4,7-dibromobenzo[c]furazan 1-oxide, C6H2Br2N2O2, (II), are normal. Compound (I) occurs in two polymorphic forms. One polymorph contains one molecule in the asymmetric unit, organized into two-dimensional sheets involving intermolecular N...Cl and O...Cl interactions. The second polymorph has three molecules in the asymmetric unit, organized into two crystallographically different two-dimensional sheets with similar interactions. Compound (II) is isomorphous with the second polymorph of (I). The three two-dimensional sheets in the two polymorphs comprise a set of three two-dimensional polymorphic arrangements.

DOI

10.1107/S0108270102003591

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