TY - JOUR
T1 - 2,11-Dibromo-5,8-dibut-yl[4]helicene
AU - Isobe, Hiroyuki
AU - Matsuno, Taisuke
AU - Hitosugi, Shunpei
AU - Nakanishi, Waka
PY - 2012/4
Y1 - 2012/4
N2 - A racemic mixture of the title compound, C26H 26Br2, a brominated [4]helicene, crystallizes, forming columns of stacked mol-ecules. There are two crystallographically unique mol-ecules in the asymmetric unit, both with the same helical handedness. As is typical with helicene congeners, the unique mol-ecules show short inter-atomic contacts between H atoms at the fjord region, with H⋯H distances of 1.87 and 1.94 Å. Mol-ecules with the same helical handedness segregate in the crystal packing, forming homochiral columns. The stacked mol-ecules are piled in a column with alternate orientations. The shortest C⋯C distance in the stacked mol-ecules is 3.306 (4) Å.
AB - A racemic mixture of the title compound, C26H 26Br2, a brominated [4]helicene, crystallizes, forming columns of stacked mol-ecules. There are two crystallographically unique mol-ecules in the asymmetric unit, both with the same helical handedness. As is typical with helicene congeners, the unique mol-ecules show short inter-atomic contacts between H atoms at the fjord region, with H⋯H distances of 1.87 and 1.94 Å. Mol-ecules with the same helical handedness segregate in the crystal packing, forming homochiral columns. The stacked mol-ecules are piled in a column with alternate orientations. The shortest C⋯C distance in the stacked mol-ecules is 3.306 (4) Å.
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U2 - 10.1107/S1600536812013141
DO - 10.1107/S1600536812013141
M3 - Article
C2 - 22606172
AN - SCOPUS:84860287438
SN - 1600-5368
VL - 68
SP - o1239
JO - Acta Crystallographica Section E: Structure Reports Online
JF - Acta Crystallographica Section E: Structure Reports Online
IS - 4
ER -