2. Tanabe-Sugano diagrams The octahedral coordination complex [Cr(brap)6]3+ has a ΔO value of 18,000 cm-1 and...

2. Tanabe-Sugano diagrams

The octahedral coordination complex [Cr(brap)6]3+ has a ΔO value of 18,000 cm-1 and a B of 600 cm-1. The d3 Tanabe Sugano diagram is shown below.

a) Determine the energy of all allowed transitions and the lowest energy forbidden transition in cm-1. Show your work. (10 pts)

b) Draw the corresponding absorbance spectrum representing the transitions determined in a). The spectrum must have wavelength in nm as x axis units and e as the y axis units. Label each transition with correct term labels. Hint: Approximate values of e are sufficient based on selection rules. (10 pts)

514/bonus: Determine the color of the [Cr(brap)6]3+ complex based on the lowest energy, allowed transition (5 pts)

Solutions

Expert Solution

Amanda K answered 2 weeks ago

Next > < Previous

Related Solutions

Which has the greater octahedral field splitting energy? (Δo) [Cr(H2O)6]2+ or [Cr(H2O)6]3+ Blank 1. Fill in...

Which has the greater octahedral field splitting energy? (Δo) [Cr(H2O)6]2+ or [Cr(H2O)6]3+ Blank 1. Fill in the blank, read surrounding text. [Fe(NO2)6]3- or [FeCl6]3- Blank 2. Fill in the blank, read surrounding text. (Please Note: There was typo that was corrected in the formula. If you answered using either [Fe(NO2)6]2+ or [Fe(Cl6)6]2+ and were correct, you will still receive full credit). Na4[V(CN)4(OH)2] or Na4[Ta(CN)4(OH)2]

[Cr(H2O)6]2+ is violet. Another CrL6 complex is yellow-green. (Ignore the charge on the complex, Cr remains...

[Cr(H2O)6]2+ is violet. Another CrL6 complex is yellow-green. (Ignore the charge on the complex, Cr remains +2). Which of the following ligands can't be L? ammine carbonyl cyano hydroxo nitro

Classify each of the following coordination compounds according to the coordination number. [CuCl2]-, [AlCl4]-, [Cr(CO)6], [Ag(NH3)2]+,...

Classify each of the following coordination compounds according to the coordination number. [CuCl2]-, [AlCl4]-, [Cr(CO)6], [Ag(NH3)2]+, [HgI3]-, Ba[FaBr4]2, K3[CoF6], [Fe(CO)5] The oxidation state is for the central metal atom in [Ni(CN)5]3–.

1.) Predict the coordination mode (tetrahedral, octahedral, greater than 6 coordinate) for each inorganic solid a.)...

1.) Predict the coordination mode (tetrahedral, octahedral, greater than 6 coordinate) for each inorganic solid a.) CsI (cesium iodide) b.) GaAs (gallium arsenide) c.) Na2S (sodium sulfide) 2.) Calculate ∆H(f) for NaBr(s). ∆H(L)= 742kJ/mol, ∆H(Nasub)= 107kJ/mol, ∆HD(Br-Br)= 194kJ/mol, Br electron affinity= -325kJ/mol, Na ionization energy= 496kJ/mol

cA) [Mn(H2O)6]3+ (sp3d2 octahedral) B) [Mn(NO2)6]3- (d2sp3 octahedral) C) [Ni(CN)4]2- (square planar)

1. Describe back bonding by ligands and how it affects the t2g level in octahedral coordination...

1. Describe back bonding by ligands and how it affects the t2g level in octahedral coordination 2. Describe what a pi-donor ligand is and its effects on the t2g level 3. Discuss how the spectrochemical series relates to the pi-donor or acceptor role of the ligand. 4. Describe the 18-electron rule and the situations in which the 16 electron rule apply.

10 OH- + 2 Cr(OH)3 +3 Br2 --> 2 CrO4 2- +8 H2O + 6 Br-...

10 OH- + 2 Cr(OH)3 +3 Br2 --> 2 CrO4 2- +8 H2O + 6 Br- Identify element oxidized, reduced, and both the oxidixing and reducing agents.

The Racah parameter B is 460 cm-1 in [Co(CN)6]3– and 615 cm-1 in [Co(NH3)6]3+. Consider the...

The Racah parameter B is 460 cm-1 in [Co(CN)6]3– and 615 cm-1 in [Co(NH3)6]3+. Consider the nature of bonding with the two ligands and explain the difference in the B value.

For each of the transition metal complex ions (a) [Ti(NH3)6]2+ (b) [Cr(H2O)4(OH)2]1- (c) trans–[Pt(CN)2(en)2]2+ (i) Draw...

For each of the transition metal complex ions (a) [Ti(NH3)6]2+ (b) [Cr(H2O)4(OH)2]1- (c) trans–[Pt(CN)2(en)2]2+ (i) Draw the structure of the transition metal complex ion. Show the charge on the complex. (ii) Determine the number of d electrons. (iii) Draw the ground state arrangement of the d electrons in the ground state. (iv) Calculate the LFSE (in units of Δo or ΔT) for each complex.

1. The coordination number of a metal atom in a close-packed structure is? 2. The coordination...

1. The coordination number of a metal atom in a close-packed structure is? 2. The coordination number of a metal atom in a BCC structure is? 3. The coordination number of an atom in the diamond or zinc blende structure is? 4. Metallic hydrogen is a proposed high pressure state of hydrogen with exciting electrical properties. Calculations have been used to propose that this material will have a low coordination number. Of the three cubic structures we have discussed, body...

Subjects