(c) The authors determined the C-C bond lengths and the Si-C-C bond angles in the acetylene ligand from the x- ray crystal structures of these two compounds. They also used IR to determine the stretching frequency of the C- C bond for the acetylene ligands. Their data for these two compounds, along with the data for the free, unbound acetylene ligand, are given in the table below. C-C bond length (Ả) Si-C-C Bond angle (deg) 179.2 C-C stretching frequency (cm) 2107 Compound Free, unbound bis(trimethylsilyl)acetylene Complex 1 Complex 2 1.208 1.225 169.4 1926 1854 1.243 150.6 Which complex do you think has stronger n back bonding with the Cu(I)? Be sure to explain your reasoning and justify it with the experimental data.

(c) The authors determined the C-C bond lengths and the Si-C-C bond angles in the acetylene ligand from the x- ray crystal structures of these two compounds. They also used IR to determine the stretching frequency of the C- C bond for the acetylene ligands. Their data for these two compounds, along with the data for the free, unbound acetylene ligand, are given in the table below. C-C bond length (Ả) Si-C-C Bond angle (deg) 179.2 C-C stretching frequency (cm) 2107 Compound Free, unbound bis(trimethylsilyl)acetylene Complex 1 Complex 2 1.208 1.225 169.4 1926 1854 1.243 150.6 Which complex do you think has stronger n back bonding with the Cu(I)? Be sure to explain your reasoning and justify it with the experimental data.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter19: Transitition Metals, Coordination Chemistry And Metallurgy

Section: Chapter Questions

Problem 19.40QE: What structural feature is used to determine whether a compound can exist as optical isomers?

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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.

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(c) The authors determined the C-C bond lengths and the Si-C-C bond angles in the acetylene ligand from the x-
ray crystal structures of these two compounds. They also used IR to determine the stretching frequency of the C-
C bond for the acetylene ligands. Their data for these two compounds, along with the data for the free, unbound
acetylene ligand, are given in the table below.
C-C bond length (A)
Si-C-C Bond angle
(deg)
179.2
C-C stretching
frequency (cm)
2107
Compound
Free, unbound
bis(trimethylsilyl)acetylene
Complex I
Complex 2
1.208
1926
1854
1.225
169.4
1.243
150.6
Which complex do you think has stronger a back bonding with the Cu(I)? Be sure to explain your reasoning and
justify it with the experimental data.

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