Ferguson, George, Gallagher, John F.ORCID: 0000-0002-7112-7450, Glidewell, Christopher, Low, John N. and Scrimgeour, Sheelagh N.
(1992)
The structure of triphenylmethanol, Ph₃COH.
Acta Crystallographica Section C, 48
(7).
pp. 1272-1275.
ISSN 0108-2701
C19H160 , Mr = 260.3, trigonal, R3, a =
19.307 (3), c = 26.735 (4) A, V= 8631 (2) A 3, Z= 24,
Dx = 1.20 g cm -3, a(Mo Ka) = 0.71073/~, /.~ =
0.7 cm -1, F(000) = 3312, T = 294 K, R = 0.083, wR
= 0.068 for 1022 observed reflections. The structure
contains hydrogen-bonded pyramidal tetramers
(which have approximate 32 symmetry) with one
molecule lying on a crystallographic threefold axis
and another in a general position. The analysis was
complicated by disorder in the crystal lattice where
71% of the tetramers occupy one orientation and
29% another; these moieties have their phenyl rings
in the same volume elements in the lattice. The O...O
separations in the hydrogen-bond systems are
2.884 (10) and 2.896 (11)/~ in the major tetramer
and 2.80 (3) and 2.90 (3) A in the minor tetramer.