Structure of exo, endo, exo, exo-2,3,5,6-tetrabromonorbornane
Abstract
The compound, C7H8Br4, crystallizes in the triclinic space group P[unk] with a = 6.280(2) Å, b = 6.646(3) Å, c = 12.385(6) Å, α = 96.58(4)°, β = 90.50(3)°, γ = 101.10(2)°, (V = 503.6(3) Å3, Z = 2, Dx = 2.715 Mgm−3; Patterson method; 1542 hkl with I > 2σ(I); R = 0.048).
The dihedral angles between the planar fragments C1–C2–C3i–C4i (A), C4i–C7–C1 (B) and C4i–C5–C6–C1 (C)are 112.3(6)°, 124.5(8)° and 123.1(8)° for A–B, B–C and A–C, respectively. The deformations in the six-membered rings induced by the different substituents and by the methylene bridge show some difference with respect to the ideal values reported for a boat conformation. This difference reverberate on the internal torsion angles (C1 to C6: −0.7(9)°, −69.2(9)°, 65.8(9)°, 7.0(8)°, −76.6(8)° and 72.1(8)°).
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Articles in the same Issue
- Encapsulation effect and its influence on bond-valence parameters
- The bootstrap method as a test for non-centrosymmetricity – Application to tazheranite (Zr,Ca,Ti)O2
- Plesiotwinning: oriented crystal associations based on a large coincidence-site lattice
- Revising structure descriptions and space groups from simulated structure factors
- Calculation of the intensity distribution for one-dimensionally disordered LixV2O5 I. The disordered phase of ϵ′-Li0.620(3)V2O5 at 298 K1
- Calculation of the intensity distribution for one-dimensionally disordered LixV2O5 II. The disordered phase of ε′-Li0.620(3)V2O5 at 20 K1
- Deoxyephedrine – mandelic acid diastereomers1
- Structure of exo, endo, exo, exo-2,3,5,6-tetrabromonorbornane
- Crystal structure of tert-butyl-6-methyl 8,9-(1,2-[60]fullereno) tricyclo[3.2.2.02,4] non-6-ene-carboxylate with CHCl3 and hexane solvent at 120 K
- Crystal structure of (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexanol, (−)-menthol
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