Dear all,
There is an inconsistency in the truncated octahedron entry in table 3.1
of the reference manual (version 2018 and all previous ones I checked).
The value indicated for the bc and ab angles is 71.53 degrees, but the
vectors a, b and c indicated in the table give the value 70.53 degrees =
acos(1/3). The indicated vectors correspond indeed to one of the possible
sets of primitive vectors in the body-centered cubic lattice of which the
truncated octahedron is the Wigner-Seitz primitive cell (namely the set
with origin at a cube corner and pointing to three cube centers), so I
belive that the typo is in the angles, not the vectors. Or am I missing
something?
Best,
Antonio
--
António M. Baptista
Instituto de Tecnologia Quimica e Biologica, Universidade Nova de Lisboa
Av. da Republica - EAN, 2780-157 Oeiras, Portugal
phone: +351-214469619 email: bapti...@itqb.unl.pt
fax: +351-214411277 WWW: http://www.itqb.unl.pt/~baptista
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