Self-assembled Transition Metal Coordination Frameworks of ...

Chapter 4
g e
The powder and frozen DMF solution EPR spectra recorded in a Varien E 112
EPR spectrometer e X-band in th (Figs. ' 4.55 and 4.56) of compound 13a sug est th
presence of a Cu(H) 3 d 9 species with typical axial nature.
l
\
l
R ‘ .
y /I
I
/
I _
\‘.
I
‘I 1
I t 1 1 " r t Y
2500 3200 B.to| Q j 554' sa'oo
Fig. 4.55. EPR spectrum of
­,
the complex 13a at 298 K in polycrystalline state.
l1
‘I I I
.' \
,
I. \/I,‘
3 /‘ \_ \ __ /'
1/ L 4’ ' h’ \
1
3
>
r
.-/ er *
I II
li '1' '
I 1|
r | I: ;
’ :
v
. J
l
H
2400 5 V
A‘ ,
32am IBO I I 3
Fig. 4.56. The spectrum EPR of the complex DMF 13a inat
77 K.