Structure of exo,endo,endo-9,9,10,11,12-pentabromotricyclo[6.2.2.02,7]dodeca-2(7),3,5-triene

Crystal structure of cis,cis,cis‐1,2‐epoxy‐3,5‐dibromo‐4‐hydroxy tetralin

“…The Br-C-C bond angles are 107.7(9)° and 122.6(8)°, with an average value of 112.8(8)°, compared with 112.6(7)° in 5,7,7,8,10-pentabromo-7,8-dihydro-benzocyclooctene [7], 112.4(3)° in 2,2-exo-3,5,5-exo-6-hexabromo-bicycloheptane [8], 112.7(6)° in exo,endo,exo,exo-2,3,5,6-tetrabromonorbornane [9], 1.960(14)Å and 111.2(4)° in exo,endo,endo-9,9,10,11,12-pentabromo-tricyclo[6.2.2.0 2,7 ]dodeca-2(7),3,5-triene [10]. For a six-membered ring with arene oxide, monobromo and monohydroxy atoms in cis,cis,cis configuration, the total puckering amplitude Q T is 0.49(1) Å [11].…”

Crystal Structure of 1,2,3-Tribromoindane, C9H7Br3

“…These values are 1.957(4)Å, 112.4(3)°in 2,2-exo-3,5,5-exo-6-hexabromobicycloheptane (AKKURT et al, 2000), 1.951(9)Å, 112.7(6)°in exo,endo,exo,exo-2,3,5,6-tetrabromonorbornane (ÇELIK et al, 1999), 1.960(14)Å and 111.2(4)°in exo,endo,endo-9,9,10,11,12-pentabromo-tricyclo [6.2.2.0 2,7 ]dodeca-2(7),3,5-triene (HÖKELEK, ÇAKMAK and BALCI, 1990), respectively. The least-squares plane formed by all the C atoms except C2 is planar.…”

A tetrabromo-1,4-ethanonaphthalene and related dibromo-1,4-ethenonaphthalene

“…There are two reported structures for pentabromide isomers, viz. (1SR,3RS,4RS,9SR,10RS)-2,2,3,9,10-pentabromo-1,2,3,4-tetrahydro-1,4-ethanonaphthalene, (VI) (refcode MOCWUW;Ü lkü et al, 2002) and (1SR,3SR,4RS,9SR,10RS)-2,2,3,9,10-pentabromo-1,2,3,4-tetrahydro-1,4-ethanonaphthalene, (VII) (refcode TAFXIH;Hö kelek et al, 1990). The latter two differ, respectively, in the endo versus exo orientation of the Br atom at position 3.…”