Disordered structure of 2,3-dichloro-6,7-dimethylanthracene, C16H12Cl2, for sublimation-grown (I) and solution-grown (II) crystals
Abstract
<h2>Acta Crystallographica Section C</h2><h3>Crystal Structure Communications</h3><h3>0108-2701</h3> <h2>research papers (organic compounds)</h2> Volume 39 Part 8 Pages 1123-1127 August 1983 <h2>Disordered structure of 2,3-dichloro-6,7-dimethylanthracene, C 16 H 12 Cl 2 , for sublimation-grown (I) and solution-grown (II) crystals</h2> T. R. Welberry, R. D. G. Jones and M. Puza Acta Cryst. (1983). C39, 1123-1127 Disordered Structure of 2,3-Dichloro-6,7-dimethylanthracene, C 16H12C12, for Sublimation-Grown (I) and Solution-Grown (II) Crystals BY T. R. WELBERRY,* RAYMOND D. G. JONES AND M. PUZA Research School of Chemistry, ,4 ustralian National University, PO Box 4, Canberra, ,4 CT 2600, ,4 ustralia (Received 11 February 1983; accepted 22 April 1983) Abstract. Mr=275.18, monoclinic, P2x/c. (I) a= 6.174 (1), b = 7.607 (1), c = 26.835 (4) At, fl= 101.14(1)°, U= 1236.6,~3. (II) a=6-180(1), b= 7.600(1), c=26.810(3)A, fl=101.15(1)°, U= 1235.4 At3. Dm= 1.47 (1), Dx = 1.478 Mg m-3, Z = 4, F(000)=568, 2(MoKct)=0.71069 At, /~(MoKa)= 0.501 mm-l, room temperature. Refinement for (I) led to R and wR of 0.075 and 0.069 for 3633 reflections (0.044 and 0.062 for 2378 reflections with I > 2.3o~). For (II) R and wR were 0.061 and 0.069 for 2842 reflections (0.044 and 0.064 for 2201 reflections with I > 2-3e~). The 2,3,6,7