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Chapter 15: Problem 23

Draw all the structural formulas for the octahedral complexes of \(\mathrm{Co}^{3+}\) with only ox and/or \(\mathrm{NH}_{3}\) as ligands.

Short Answer

Expert verified
Answer: There are 7 possible octahedral complexes of Co3+ with ox and/or NH3 ligands. Their structural formulas are: [Co(ox)6]6-, [Co(NH3)6]3+, [Co(ox)5(NH3)]4-, [Co(ox)4(NH3)2]2-, [Co(ox)3(NH3)3], [Co(ox)2(NH3)4]1+, and [Co(ox)(NH3)5]2+.

Step by step solution

01

The pure ligand complexes (only ox or only NH3)

First, we draw the complexes that have only one type of ligand. There are two possible complexes in this case: one with 6 oxalate ligands and one with 6 ammonia ligands. Complex 1: \(\mathrm{[Co(ox)_{6}]^{6-}} \) Complex 2: \(\mathrm{[Co(NH_{3})_{6}]^{3+}}\)
02

Mixed ligand complexes (both ox and NH3)

Now, we need to consider the complexes that have a combination of ox and \(\mathrm{NH}_{3}\) ligands. As each complex will have a total of 6 ligands, we can have several possible combinations: Complex 3: \(\mathrm{[Co(ox)_{5}(NH_{3})]^{4-}}\) Complex 4: \(\mathrm{[Co(ox)_{4}(NH_{3})_{2}]^{2-}}\) Complex 5: \(\mathrm{[Co(ox)_{3}(NH_{3})_{3}]}\) Complex 6: \(\mathrm{[Co(ox)_{2}(NH_{3})_{4}]^{1+}}\) Complex 7: \(\mathrm{[Co(ox)(NH_{3})_{5}]^{2+}}\) In total, there are 7 possible octahedral complexes of \(\mathrm{Co}^{3+}\) with ox and/or \(\mathrm{NH}_{3}\) ligands.

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Most popular questions from this chapter

Which of the following octahedral complexes show geometric isomerism? If geometric isomers are possible, draw their structures. (a) \(\left[\mathrm{Co}(e n) \mathrm{Cl}_{4}\right]^{-}\) (b) \(\left[\mathrm{Ni}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{2} \mathrm{ClBr}\right]^{4-}\) (c) \(\left[\mathrm{Cd}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}_{4}\right]^{2-}\)

Give the electronic configuration for (a) \(\mathrm{Fe}^{3+}\) (b) \(\mathrm{V}^{2+}\) (c) \(\mathrm{Zn}^{2+}\) (d) \(\mathrm{Cu}^{+}\) (e) \(\mathrm{Mn}^{4+}\)

What is the mass percent of chromium in the chloride salt of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}(\mathrm{OH})\right]^{2+} ?\)

The wavelength of maximum absorption of \(\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}^{2+}\) is \(580 \mathrm{~nm}\) (orange-yellow). What color is a solution of \(\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}^{2+} ?\)

. For complexes of \(\mathrm{V}^{3+}\), only one distribution of electrons is possible. Explain.
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