The CO ligands in the molecule Ni(CO)4 could have two possible geometries - a tetrahedral arrangement...

The CO ligands in the molecule Ni(CO)₄ could have two possible geometries - a tetrahedral arrangement of carbon monoxides around the central nickel atom, or a square planar geometry in which all the atoms are in the same plane and all of the C-Ni-C angles are 90 degrees.

For each geometry, determine the following:

(a) What is the point group?

(b) Write the reducible representation for the C-O stretching vibrational modes.

(d) Which of the C-O streching vibrational modes are in the infrared spectrum? Which modes are allowed in the Raman spectrum? And how many emissions could possibly be observed for both infrared and Raman?

Solutions

Expert Solution

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

The CO ligands in the molecule Ni(CO)4 could have two possible geometries – a tetrahedral arrangement...

The CO ligands in the molecule Ni(CO)4 could have two possible geometries – a tetrahedral arrangement of carbon monoxides around the central nickel atom, or a square planar geometry in which all of the atoms are in the same plane and all of the C-Ni-C angles are 90º. For each geometry, determine the following: (a) What is its point group? (b) Write the reducible representation for the C-O stretching vibrational modes. (Hint: For the square planar form, C2' and sv...

Much like the CO ligands, cyanide (CN-) ligands have IR stretching frequencies that are distinctive and...

Much like the CO ligands, cyanide (CN-) ligands have IR stretching frequencies that are distinctive and therefore often particularly useful. Consult an appropriate character table, and give a reducible representation for the cyanide stretching vibrations in the square-planar tetracyanoplatinate(II) ion, Pt(CN)42-.

Suppose a particular mechanism has the following equilibria: Ni(CO)4(g) ⇌ Ni(s) + 4 CO(g) K1 =...

Suppose a particular mechanism has the following equilibria: Ni(CO)4(g) ⇌ Ni(s) + 4 CO(g) K1 = 8.77 ΔH1 = 190 kJ MnO(s) + CO(g) ⇌ Mn(s) + CO2(g) K2 = 490 ΔH2 = 349 kJ Mn(s) + H2O(g) ⇌ MnO(s) + H2(g) K3 = 0.0149 ΔH3 = -346 kJ Determine the values of the equilibrium constant and enthalpy change for the net equation: Ni(CO)4(g) + 4 H2O(g) ⇌ Ni(s) + 4 CO2(g) + 4H2(g) Kc = ? ΔH = ?...

: carbonyl(CO) is strong field ligand so [Ni(CO)4] should have square planar shape but by the...

: carbonyl(CO) is strong field ligand so [Ni(CO)4] should have square planar shape but by the experiment [Ni(CO)4] is tetrahedral.Explain this statement.

Some possible trasitions of the hydrogen atom are listed below: A: ni = 4, nf =...

Some possible trasitions of the hydrogen atom are listed below: A: ni = 4, nf = 7 B: ni = 3, nf = 5 C: ni = 3, nf = 6 D: ni = 2, nf = 5 E: ni = 6, nf = 3 F: ni = 5, nf = 3 G: ni = 5, nf = 2 H: ni = 7, nf = 4 where ni and nf are the initial and the final principal quantum numbers respectively....

For inorganic chemistry What is the correct name of the following : 1- [Ni(Co)4] 2- [Co(NH3)6]...

For inorganic chemistry What is the correct name of the following : 1- [Ni(Co)4] 2- [Co(NH3)6] ^2+ 3- [ Co(NH3)3 (H2O)2 Cl] Br2 4- Na3 [ Co(NO2)6 ]

A two-carbon molecule, acetyl is combined with co-A as a result of pyruvate processing (with the...

A two-carbon molecule, acetyl is combined with co-A as a result of pyruvate processing (with the pyruvate dehydrogenase complex). What happened to the 3rd carbon which was present in pyruvate? How many glucose molecules are needed to make 24 acetyls in pyruvate processing? Where and how many NADHs are generated (during glycolysis, pyruvate processing, and CAC) ? What will happen to the NADHs after they are generated? What is the net gain of ATP per glucose molecule which was metabolized...

Is it possible that a security with a positive standard deviation of returns could have a...

Is it possible that a security with a positive standard deviation of returns could have a beta of zero (excluding T-bills)? Explain. From the CAPM, what is the expected return on such an asset? Is it possible that a security with a positive standard deviation could have an expected return from the CAPM that is less than the risk-free rate? If so, what would its beta be? Would anyone be willing to purchase such a stock? Discuss.

If using a cotransporter for movement of two molecules, what would happen if one molecule could...

If using a cotransporter for movement of two molecules, what would happen if one molecule could no longer bind to the transporter?

Question 4. Draw a simple molecular orbital diagram for the carbon monoxide (CO) molecule and explain,...

Question 4. Draw a simple molecular orbital diagram for the carbon monoxide (CO) molecule and explain, using an accurate bonding description, how this molecule can act as a ligand within metal carbonyl compounds. Explain why CO possesses one infrared (IR) active vibrational mode u(CO), whereas, the di-nitrogen molecule, N2, does not? Using your bonding description from part (i.), together with the knowledge that CO ligands contain an IR active vibrational mode, explain the variations in u(CO) cm-1 values which arise...

Subjects