Mercury ions, Hg(1) and Hg(II), are poisonous due to their ability to displace other metal ions inenzymes and disrupt the biological function.a) Are these ions hard or soft?b) Common ligands for metal ions in biological environments are amino acids (buildingblocks of proteins). Of the amino acids depicted below (focus on the highlighted atoms),which would be the best ligand for Hg(1) and Hg(II), and why?HHHO H3NtCH2HHH3N* -cCH2H3Nt C-cCH2H3NtCH2H3N+-C-cCHCH2HO CH3OHSHонH2NH2NSerine (S)SerThreonine (T)ThrCysteineСysTyrosine (Y) Asparagine (N) Glutamine (Q)AsnТyrGlnc) Other metal ions that are toxic at certain concentrations include cadmium, chromium,iron, arsenic, and lead. For each of these metals, predict whether they would havesimilar chemistry to mercury using HSAB concepts.(Note that toxicity is dose-dependent; even water can be poisonous at too high aconcentration in the body)

This can be explained using the hard and soft acid-base concept.

Mercury ions, Hg(1) and Hg(II), are poisonous due to their ability to displace other metal ions in enzymes and disrupt the biological function. a) Are these ions hard or soft? b) Common ligands for metal ions in biological environments are amino acids (building blocks of proteins). Of the amino acids depicted below (focus on the highlighted atoms), which would be the best ligand for Hg(1) and Hg(II), and why? H H O H3Nt ÇH2 H3N--c CH2 H H3Nt H3N--c CH2 H3N*. H3Nt CH2 CH CH2 CH2 OH но CH3 SH он H2Ñ H2N Serine (S) Ser Threonine (T) Cysteine (C) Cys Tyrosine (Y) Asparagine (N) Glutamine (Q) Asn Thr Тyr Gln c) Other metal ions that are toxic at certain concentrations include cadmium, chromium, iron, arsenic, and lead. For each of these metals, predict whether they would have similar chemistry to mercury using HSAB concepts.- (Note that toxicity is dose-dependent; even water can be poisonous at too high a concentration in the body)

Mercury ions, Hg(1) and Hg(II), are poisonous due to their ability to displace other metal ions in enzymes and disrupt the biological function. a) Are these ions hard or soft? b) Common ligands for metal ions in biological environments are amino acids (building blocks of proteins). Of the amino acids depicted below (focus on the highlighted atoms), which would be the best ligand for Hg(1) and Hg(II), and why? H H O H3Nt ÇH2 H3N--c CH2 H H3Nt H3N--c CH2 H3N*. H3Nt CH2 CH CH2 CH2 OH но CH3 SH он H2Ñ H2N Serine (S) Ser Threonine (T) Cysteine (C) Cys Tyrosine (Y) Asparagine (N) Glutamine (Q) Asn Thr Тyr Gln c) Other metal ions that are toxic at certain concentrations include cadmium, chromium, iron, arsenic, and lead. For each of these metals, predict whether they would have similar chemistry to mercury using HSAB concepts.- (Note that toxicity is dose-dependent; even water can be poisonous at too high a concentration in the body)

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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Concept explainers

Coordination Chemistry

It is a part of chemistry, in which the study of compounds that have central atoms surrounded by molecules or ions, known as ligand, is known as coordination chemistry.

Question

Mercury ions, Hg(1) and Hg(II), are poisonous due to their ability to displace other metal ions in
enzymes and disrupt the biological function.
a) Are these ions hard or soft?
b) Common ligands for metal ions in biological environments are amino acids (building
blocks of proteins). Of the amino acids depicted below (focus on the highlighted atoms),
which would be the best ligand for Hg(1) and Hg(II), and why?
H
H
H
O H3Nt
CH2
H
H
H3N* -c
CH2
H3Nt C-c
CH2
H3Nt
CH2
H3N+-C-c
CH
CH2
HO CH3
OH
SH
он
H2N
H2N
Serine (S)
Ser
Threonine (T)
Thr
Cysteine
Сys
Tyrosine (Y) Asparagine (N) Glutamine (Q)
Asn
Тyr
Gln
c) Other metal ions that are toxic at certain concentrations include cadmium, chromium,
iron, arsenic, and lead. For each of these metals, predict whether they would have
similar chemistry to mercury using HSAB concepts.
(Note that toxicity is dose-dependent; even water can be poisonous at too high a
concentration in the body)

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