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Triphenylphosphine as a free ligand shows a 3¹P NMR signal at -4 ppm. Cis-Pt(PPh3)2Cl2 shows a single resonance at +12 ppm. Cis-Pd(PPh3)2Cl2 shows a single resonance at +24 ppm. Give a plausible explanation as to why the 31P resonance in the Pd complex is shifted to a more deshielded position than in the Pt complex. (Hint: check the periodic table)

Triphenylphosphine as a free ligand shows a 3¹P NMR signal at -4 ppm. Cis-Pt(PPh3)2Cl2 shows a single resonance at +12 ppm. Cis-Pd(PPh3)2Cl2 shows a single resonance at +24 ppm. Give a plausible explanation as to why the 31P resonance in the Pd complex is shifted to a more deshielded position than in the Pt complex. (Hint: check the periodic table)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Triphenylphosphine as a free ligand shows a 3¹P NMR signal at -4 ppm. Cis-Pt(PPh3)2Cl2 shows a single resonance at +12 ppm. Cis-Pd(PPh3)2Cl2 shows a single resonance at +24 ppm. Give a plausible explanation as to why the 31P resonance in the Pd complex is shifted to a more deshielded position than in the Pt complex. (Hint: check the periodic table)
Transcribed Image Text:Triphenylphosphine as a free ligand shows a 3¹P NMR signal at -4 ppm. Cis-Pt(PPh3)2Cl2 shows a single resonance at +12 ppm. Cis-Pd(PPh3)2Cl2 shows a single resonance at +24 ppm. Give a plausible explanation as to why the 31P resonance in the Pd complex is shifted to a more deshielded position than in the Pt complex. (Hint: check the periodic table)
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