Supplementary Material (ESI) for Chemical Communications
This journal is © The Royal Society of Chemistry 2007
Electronic Supplementary Information
A 3D chiral Zn(II) coordination polymer with triple
Zn-oba-Zn helical chains (oba = 4,4’-oxybis(benzoate))
Yi Ma, a Zhengbo Han,*a Yongke He a and Liguo Yang b
School of Chemical Science and Engineering, Liaoning University. Shenyang 110036
P.R. China
b
College of Chemistry, Jilin University, Changchun 130012 P. R. China
a
Fig. S1 The polyhedron representation of the 3D chiral metal-organic framework of 1
viewed along the c-axis.
100
Weight loss (%)
90
80
70
60
50
40
30
200
400
600
800
o
Temperature ( C)
Fig. S2 TGA curve of 1.
Supplementary Material (ESI) for Chemical Communications
This journal is © The Royal Society of Chemistry 2007
Relative intensity (a.u.)
358 nm
300
350
400
450
500
550
600
Wavenumber (nm)
Fig. S3 The photoluminescent spectra of 1 in the solid state at room temperature.
i
ii
10
20
2θ/
30
40
o
Fig. S4 Simulated (i) and experimental (ii) X-ray powder diffraction patterns of 1.
Supplementary Material (ESI) for Chemical Communications
This journal is © The Royal Society of Chemistry 2007
VCD
ΔA
A
0.8
0.6
0.4
0.2
1800
IR
1700
1600
1500
1400
1300
1200
-1
Wavenumber(cm )
Fig. S5. Experment IR (lower frame) and VCD (upper frame) spectra of 1 from
different experiments, Infrared absorption spectra of KBr powder-pressed pellets were recorded
on a Bruker Vector 22 FTIR spectrometer (resolution: 4 cm-1). VCD spectra of KBr
powder-pressed pellets samples were recorded on a Bruker Vector 22 FTIR spectrometer equipped
with the VCD/IRRAS module PMA 37 with a reasonable S/N ratio (resolution: 4 cm-1; zero
filling factor: 2; scan time: 3 h) to which the following elements were added (in order): (1) linear
polarizer; (2) ZnSe photoelastic modulator set at a modulation frequency of 50 kHz; (3) sample
holder; (4) lens to focus the parallel beam on the detector element; (5) optical filter to prevent
detector saturation; (6) D313/Q MCT detector especially selected for low noise; (7) pre-amplifier.
The signal from the detector could be switched from one path that passed the electronic signal
directly to the A/D converter (the ‘‘DC’’ signal containing the absorption interferogram) to a
second path that passed through high-pass and low-pass filters and a SR830 lock-in amplifier (the
‘‘AC’’ signal containing the VCD interferogram).