The primary advantage of substituting lanthanides in place of calcium ions. That is why lanthanides are colored, but Ca2+ complexes are not. Coordination with lanthanides leads to a strong shift of all the seven quinine and carboxyl absorption bands and causes the appearance of a broad, poorly resolved feature between 1734 and 1521cm-1in IR spectra. Lanthanide ions or lanthanide complexes are colored because their f- orbitals are partially filled. This allows absorption of a certain wavelength from the visible region of the spectrum, thus causing f-f transition formation. Calcium ion complexes, on the other hand, are colorless because there is no visible light is absorbed. Their 3d level is completely full; thus, there are no gaps to promote an electron into it.
What is the primary advantage of substituting Lanthanides (or other transition metals in place of Ca2+ for experiments? Specifically, why are lanthanide complexes colored while Ca2+ complexes are not?
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Academic.Tips. (2022) 'What is the primary advantage of substituting Lanthanides (or other transition metals in place of Ca2+ for experiments? Specifically, why are lanthanide complexes colored while Ca2+ complexes are not'. 15 November.
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Academic.Tips. (2022, November 15). What is the primary advantage of substituting Lanthanides (or other transition metals in place of Ca2+ for experiments? Specifically, why are lanthanide complexes colored while Ca2+ complexes are not? https://academic.tips/question/what-is-the-primary-advantage-of-substituting-lanthanides-or-other-transition-metals-in-place-of-ca2-for-experiments-specifically-why-are-lanthanide-complexes-colored-while-ca2-complexes-are-not/
References
Academic.Tips. 2022. "What is the primary advantage of substituting Lanthanides (or other transition metals in place of Ca2+ for experiments? Specifically, why are lanthanide complexes colored while Ca2+ complexes are not?" November 15, 2022. https://academic.tips/question/what-is-the-primary-advantage-of-substituting-lanthanides-or-other-transition-metals-in-place-of-ca2-for-experiments-specifically-why-are-lanthanide-complexes-colored-while-ca2-complexes-are-not/.
1. Academic.Tips. "What is the primary advantage of substituting Lanthanides (or other transition metals in place of Ca2+ for experiments? Specifically, why are lanthanide complexes colored while Ca2+ complexes are not?" November 15, 2022. https://academic.tips/question/what-is-the-primary-advantage-of-substituting-lanthanides-or-other-transition-metals-in-place-of-ca2-for-experiments-specifically-why-are-lanthanide-complexes-colored-while-ca2-complexes-are-not/.
Bibliography
Academic.Tips. "What is the primary advantage of substituting Lanthanides (or other transition metals in place of Ca2+ for experiments? Specifically, why are lanthanide complexes colored while Ca2+ complexes are not?" November 15, 2022. https://academic.tips/question/what-is-the-primary-advantage-of-substituting-lanthanides-or-other-transition-metals-in-place-of-ca2-for-experiments-specifically-why-are-lanthanide-complexes-colored-while-ca2-complexes-are-not/.
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"What is the primary advantage of substituting Lanthanides (or other transition metals in place of Ca2+ for experiments? Specifically, why are lanthanide complexes colored while Ca2+ complexes are not?" Academic.Tips, 15 Nov. 2022, academic.tips/question/what-is-the-primary-advantage-of-substituting-lanthanides-or-other-transition-metals-in-place-of-ca2-for-experiments-specifically-why-are-lanthanide-complexes-colored-while-ca2-complexes-are-not/.