Self-assembled Transition Metal Coordination Frameworks of ...

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Ligands
1.51.0
Wavelength (nm)
Fig. 2.4. UV spectra of HZL1 (black) and HZL4 (blue) in approximately 104 M
methanol solutions.
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-I
2.5
5'.) 2.0
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0.(_) -'| 1 | | | | | \k | | 2 lb]
200 250 300 350 4()(_l 45()
Wavelength (nm)
Fig. 2.5. UV spectra of HQL2 (black) and HZLS (blue) in approximately 104 M
methanol solutions.
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200 250 300 350 400 450 500
Wavelength (nm)
Fig. 2.6. UV spectra of HZL3 (black) and HZL6 (blue) in 104 M methanol solutions.
These differences in wavelengths can be explained on the basis of the weaker
C=S Ir interaction in thiocarbonyl compounds compared to C=O It interaction in
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