Chemistry Reference
In-Depth Information
µ
-(TMTTF)
2
ReO
4
along the
Figure 6.27. (a) View of the crystal structure of
94
◦
).
Crystallographic data from Perruchas
et al.
, 2005. (b) Crystal structure of
(TMTTF)
2
ReO
4
at 293 K. Crystallographic data from Kobayashi
et al.
, 1984.
C, Re, S and O atoms are represented by black, dark grey, medium grey and
light grey balls, respectively. H atoms are omitted for clarity. The two disordered
positions of the anions are represented.
[110] direction (
C
2
/
c
,
a
=
1
.
303 nm,
b
=
0
.
879 nm,
c
=
2
.
386 nm,
β
=
97
.
For comparison, the classical triclinic phase (TMTTF)
2
ReO
4
is metallic down to
230 K with
−
1
cm
−
1
(Coulon
et al.
, 1982).
Remarkably, when electrocrystallizing TMTTF in a TBA
σ
RT
33
IO
4
solution in a con-
fined environment, only rectangular-shaped thin crystals are obtained. The crys-
tal structure gives a 2:1 stoichiometry salt with the formula
·
µ
-(TMTTF)
2
IO
4
,
