Molekül-und Kristallstrukturen des Dibrom- und Dijodmaleinsäurethioanhydrids Zum Verständnis der Korrelation zwischen / Crystal Structures of Dibrom- and Diiod Maleic Acid Thioanhydride
1980 ◽
Vol 35
(1)
◽
pp. 14-17
◽
Keyword(s):
X Ray
◽
Abstract The molecular and crystal structures of dibrom maleic acid thioanhydride and diiod maleic acid thioanhydride have been determined by means of single-crystal X-ray intensities. The crystal structures are isomorphous and have the space group P41212 (enantiomorphous with P43212). The lattice constants are a = 7.543 Å, c = 12.155 Å (DBMTA) and a = 7.816 Å, c = 12.348 Å (DIMTA). The five-membered rings of the molecules are planar with maximum deviations of 0.003 Å (DBMTA) and 0.005 Å (DIMTA). Adjacent molecules are held together by van-der-Waals-forces.
2004 ◽
Vol 219
(2)
◽