Table 3 Crystallographic parameters for {[K·18-C-6]ICl2}n
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Formula
IKCl2O6C12H24
501.23
P21/n
8.8860(9)
8.1987(8)
13.9274(13)
101.873(2)
992.96(16)
2
1.676
21.121
223
10037
2271
Formula wt
Space group
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Cheng, Tetrahedron, 2003, 59, 3635–3641.
˚
a/A
˚
b/A
˚
c/A
b (◦)
3
˚
10 M. E. Mowery and P. DeShong, J. Org. Chem., 1999, 64, 1684–
1688.
V/A
Z
rc/g cm-3
11 S. S. Pawar, M. S. Shingare and S. N. Thore, Lett. Org. Chem., 2007, 4,
m/cm-1
486–490.
12 N. E. Leadbeater and M. Marco, J. Org. Chem., 2003, 68, 888–
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2587–2590.
T/K
total no. data
no. unique data
obs dataa
no. parameters
R,%b
2271
104
0.0576
0.0600
0.32, -0.38
wR2,%c
˚
max/min peaks, e/A
a Observation criterion: I >2s(1). b R = R ꢀFo| - |Fcꢀ/R |Fo| c wR2 =
[R (w (Fo - Fc )2)/R w(Fo2)2]1/2
.
2
2
20 C. Gwizdala, D. P. Kennedy and S. C. Burdette, Chem. Commun., 2009,
summarized in Table 3 and the 50% thermal ellipsoid plot is shown
in Fig. 1.
6967–6969.
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Spectroscopic assay
All solutions were prepared with spectrophotometric grade
CH3CN. Spectra were acquired at 25 ◦C in 1 cm path length
quartz cuvettes with a total volume of 3.0 mL. Fluorescence
spectra were recorded on a Hitachi F-4500 spectrophotometer
under the control of a Pentium-IV PC running the FL solutions
2.0 software package. Excitation was provided by a 150 W Xe
lamp (Ushio Inc.) operating at a current of 5 A and using 5 nm
and 2.5 nm excitation and emission slit widths respectively and a
photomultiplier tube power of 700 V.
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Acknowledgements
This work was supported by the University of Connecticut and by
NSF grant CHE-0955361.
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