
TY  - JOUR
A1  - Lynch, Daniel E. 
A1  - Hayer, Ravinder 
A1  - Bagga, Sanjeev 
A1  - Parsons, Simon 
T1  - Two Crystal Polymorphs of 3-(Dimethylamino)benzoic Anhydride
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 2000
VL  - 53
IS  - 7
SP  - 593
EP  - 596
KW  - Polymorph; crystal X-ray analysis; benzoic anhydride.
UR  - https://doi.org/10.1071/CH99145 
N2  - Two polymorphs of 3-(dimethylamino)benzoic anhydride have been determined by single crystal X-ray diffraction analysis. Polymorph (1) is triclinic (P1&#8211;, a 7.112(3), b 9.289(4), c 13.364(5) &#197;, a 96.39(2), b 104.04(2), g 107.59(2)&#x02DA;, V 800.0(6) &#197; 3 , Z 2) with the full molecule in the asymmetric unit, whereas polymorph (2) is monoclinic (C2/c, a 10.892(3), b 11.855(4), c 13.164 &#197;, b 112.14(3)&#x02DA;, V 1574.5(9) &#197; 3 , Z 4) with the central oxygen atom across a twofold axis. Differing conformations and C&#8211;H hydrogen-bonding associations give rise to markedly different solid-state packing arrangements. 
ER  -

