Author:
Passmore Jack,Taylor Peter,Whidden Tom,White Peter S.
Abstract
Crystalline pentaiodinium hexafluoroantimonate was prepared by the reaction of I2 and SbF5 in AsF3. The crystals were triclinic, a = 8.295(4) Å, b = 15.61(1) Å, c = 8.390(4) Å, α = 81.49(4)°, β = 110.02(4)°, γ = 85.06(4)°, Z = 3, space group [Formula: see text]. The structure was solved by multiple-solution direct methods and Fourier syntheses and refined by full-matrix and blocked-matrix least-squares procedures to a final R of 0.062 and Rw of 0.090 for 2229 reflections with I ≥ 3σ(I). The two crystallographically independent planar, bent I5+ chains (one centrosymmetric, the other essentially centrosymmetric), each have two collinear central bonds of 2.899(2) Å (× 2); 2.896(2), and 2.920(2) Å, bond angles 180° and 178.7(6)°, respectively, and two shorter terminal bonds of 2.680(3) Å (× 2); 2.666(3) and 2.698(2) Å, with bond angles between central and terminal bonds of 94.53(6)° (× 2); 93.86(7) and 93.17(7)°, respectively. Three I5+ units are joined by a weak (3.416(3) Å) interaction to form what may be regarded as an I153+ unit. The SbF6− anions are approximately octahedral.
Publisher
Canadian Science Publishing
Subject
Organic Chemistry,General Chemistry,Catalysis
Cited by
45 articles.
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