Publication Details (including relevant citation information):
- Mueller, Peter; Fronczek, Frank R.; Smith, Stacey J.; Mako, Teresa; Levine, Mindy
- From Acta Crystallographica, Section C: Crystal Structure Communications (2013), C69(2), 199-203.
A second, monoclinic, polymorph of the title compd., C14H8Cl2, has been found. In addn. to the structure of this monoclinic form, the structure of the previously described orthorhombic form has been redetd. at low temp. and using modern methods. The low-temp. structure of the orthorhombic form is of significantly higher quality than the previously published structure and addnl. details can be derived. A comparison of the crystal packing of the two forms with a focus on weak intermol. C-H···Cl interactions shows the monoclinic structure to have one such interaction linking the mols. into infinite ribbons, while two crystallog. independent C-H···Cl interactions give rise to an interesting infinite three-dimensional network in the orthorhombic crystal form.
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