2012
DOI: 10.1039/c2cc36455g
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Abstract: The VCD spectra of lanthanide chelates with two chiral ligands display conserved sequences of bands throughout the Ln series. Some compounds (Tm, Yb) feature increased bands and strongly improved signal-to-noise ratios, an effect we dub Lanthanide Induced VCD Enhancement (LIVE).

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Cited by 16 publications
(21 citation statements)
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References 20 publications
(22 reference statements)
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“…S2 and S3). 22 and is similar to that observed in induced ECD intensity of probe 1a-1g with 6c. 40 Since their ionic radii increased on the order Yb 3+ (0.99 Å) < Er 3+ (1.00 Å) < Ho 3+ (1.02 Å) < Dy 3+ (1.03 Å) < Gd 3+ (1.05 Å) < Eu 3+ (1.07 Å) < Pr 3+ (1.13 Å) for octadentate coordination, 34 it is likely that steric proximity between the coordinating β-diketonates and the chiral center of the amino alcohol 6c regulates the chirality transfer in the lanthanide coordination sphere.…”
Section: Chirality Probing Of Amino Alcohols Detected By Vcd Measuremsupporting
confidence: 87%
See 2 more Smart Citations
“…S2 and S3). 22 and is similar to that observed in induced ECD intensity of probe 1a-1g with 6c. 40 Since their ionic radii increased on the order Yb 3+ (0.99 Å) < Er 3+ (1.00 Å) < Ho 3+ (1.02 Å) < Dy 3+ (1.03 Å) < Gd 3+ (1.05 Å) < Eu 3+ (1.07 Å) < Pr 3+ (1.13 Å) for octadentate coordination, 34 it is likely that steric proximity between the coordinating β-diketonates and the chiral center of the amino alcohol 6c regulates the chirality transfer in the lanthanide coordination sphere.…”
Section: Chirality Probing Of Amino Alcohols Detected By Vcd Measuremsupporting
confidence: 87%
“…The order of influence of various ligands was 1 > 3 > > 2 , 4 . Interestingly, the order for various lanthanide centers was Yb(III) ~ Er(III) ~ Ho(III) > Dy(III) ~ Gd(III) ~ Eu(III) >> Pr(III), which has no correlation with the order of the lanthanide‐induced VCD enhancement reported by the group of Di Bari (Tm 3+ >> Yb 3+ ~ Tb 3+ > Nd 3+ ~ Pr 3+ for chiral cyclen and Tm 3+ > Tb 3+ > Yb 3+ > Dy 3+ > Ho 3+ ~ Er 3+ for lasalocid) and is similar to that observed in induced ECD intensity of probe 1a , 1b , 1c , 1d , 1e , 1f , 1g with 6c . Since their ionic radii increased on the order Yb 3+ (0.99 Å) < Er 3+ (1.00 Å) < Ho 3+ (1.02 Å) < Dy 3+ (1.03 Å) < Gd 3+ (1.05 Å) < Eu 3+ (1.07 Å) < Pr 3+ (1.13 Å) for octadentate coordination, it is likely that steric proximity between the coordinating β‐diketonates and the chiral center of the amino alcohol 6c regulates the chirality transfer in the lanthanide coordination sphere.…”
Section: Resultsmentioning
confidence: 86%
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“…A study on Cs I ion‐containing Ln III complexes linked the VCD intensities with the parity of the total orbital angular momentum ( L ) 23. Lanthanide ions also sometimes cause an enhancement of the VCD intensities, whereas the positions and relative magnitudes of the bands are conserved 24. In the case of the bipyridine complex described in the present study, however, we observe both VCD enhancement and intensity distortion.…”
Section: Introductionmentioning
confidence: 43%
“…Unusually large VCD is also often observed for transition metal complexes, containing Co 2+ , Co 3+ , Ni 2+ , and other coordinating ions . Clearly, this effect must be different than for the condensation‐induced enhancement observed for the nucleic acids, fibrils and crystals.…”
Section: Vibrational Circular Dichroismmentioning
confidence: 99%