Ferguson, George, Gallagher, John F.ORCID: 0000-0002-7112-7450, Fullwood, Russell and Parker, David
(1992)
(1R,2R)-1,2-Diphenyl-1,2-ethanediamine monohydrobromide.
Acta Crystallographica Section C, 48
(12).
pp. 2273-2275.
ISSN 0108-2701
The cation in (1R,2R)- 1,2-diphenyl- 1,2-ethanediamine
monohydrobromide has approximate twofold symmetry
and is involved in a three-dimensional hydrogen-bond
network with the bromide anion [H...Br 2.51 (4)-2.82(3),
N...Br 3.279(2)-3.560(3) A]. Principal bond lengths
include Csp3--Csp 3 1.535(4), Csp3--NH~ 1.489(3),
Csp3--NH2 1.469(4), and Csp3--Car 1.517(3) and
1.528(3) A. The main torsion angles defining the conformation
are NH~--Csp3--Csp3--NH2 -44.3(2) and
Car--Csp3--Csp3--Car 64.3(2) °. The absolute stereochemistry
(known on chemical grounds) was confirmed
by the analysis.