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4. (a) Chemical shift (8) value of CH and CH3 proton in [Al(acac);] are 1.99 and 5.47 ppm, respectively whereas in [Fe(acac);] the 8 values of CH and CH, proton are shifted to more downfield region i.e, 2.18 and 5.52 ppm, respectively where 'acac' denotes acetylacetonate anion. Explain the observation. (b) The "F -NMR spectrum of SF4 consists of two triplets of equal peak area. Suggest the structure of the compound with justification.

4. (a) Chemical shift (8) value of CH and CH3 proton in [Al(acac);] are 1.99 and 5.47 ppm, respectively whereas in [Fe(acac);] the 8 values of CH and CH, proton are shifted to more downfield region i.e, 2.18 and 5.52 ppm, respectively where 'acac' denotes acetylacetonate anion. Explain the observation. (b) The "F -NMR spectrum of SF4 consists of two triplets of equal peak area. Suggest the structure of the compound with justification.

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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4. (a) Chemical shift (8) value of CH and CH3 proton in [Al(acac)3] are 1.99 and 5.47 ppm, respectively whereas in [Fe(acac);] the 8 values of CH and CH, proton are shifted to more downfield region i.e, 2.18 and 5.52 ppm, respectively where 'acac' denotes acetylacetonate anion. Explain the observation. (b) The "F -NMR spectrum of SF4 consists of two triplets of equal peak area. Suggest the structure of the compound with justification.
Transcribed Image Text:4. (a) Chemical shift (8) value of CH and CH3 proton in [Al(acac)3] are 1.99 and 5.47 ppm, respectively whereas in [Fe(acac);] the 8 values of CH and CH, proton are shifted to more downfield region i.e, 2.18 and 5.52 ppm, respectively where 'acac' denotes acetylacetonate anion. Explain the observation. (b) The "F -NMR spectrum of SF4 consists of two triplets of equal peak area. Suggest the structure of the compound with justification.
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