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Chapter 24: Problem 26

Write names for the following coordination compounds: (a) \(\left[\mathrm{Cd}(\mathrm{en}) \mathrm{Cl}_{2}\right]\) (b) \(\mathrm{K}_{4}\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]\) (c) \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{CO}_{3}\right] \mathrm{Cl}\) (d) \(\left[\operatorname{Ir}\left(\mathrm{NH}_{3}\right)_{4}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]\left(\mathrm{NO}_{3}\right)_{3}\)

Short Answer

Expert verified
(a) Ethylenediamine dichloride cadmium (b) Potassium hexacyanomanganese(II) (c) Pentaamminecarbonatochromium(III) chloride (d) Tetraamminediaquadirconium(III) nitrate

Step by step solution

01

Identify Ligands and Metal Ion

In this compound, we have \(\text{Cd}\) as the metal ion, \(\text{en}\) (ethylenediamine) as one ligand, and \(\text{Cl}\) (chloride) as the other ligand.
02

Write the Names in Alphabetical Order

Next, we write the ligand names in alphabetical order followed by the name of the metal ion: ethylenediamine dichloride cadmium.
03

Final Name

The name for this coordination compound is Ethylenediamine dichloride cadmium. (b) \(\text{K}_{4}\left[\text{Mn}(\text{CN})_{6}\right]\)
04

Identify Ligands and Metal Ion

In this compound, we have \(\text{Mn}\) as the metal ion and \(\text{CN}\) (cyanide) as the ligand. Potassium (\(\text{K}\)) is the counter-ion.
05

Write the Names in Alphabetical Order

Next, we write the ligand names in alphabetical order followed by the name of the metal ion: hexacyanomanganese(II).
06

Write the Name of Counter-ion

We also need to write the name of the counter-ion: potassium.
07

Final Name

The name for this coordination compound is Potassium hexacyanomanganese(II). (c) \(\left[\text{Cr}\left(\text{NH}_{3}\right)_{5} \text{CO}_{3}\right]\text{Cl}\)
08

Identify Ligands and Metal Ion

In this compound, we have \(\text{Cr}\) as the metal ion, \(\text{NH}_{3}\) (ammine, not ammonia as a ligand) as one ligand, and \(\text{CO}_{3}\) (carbonato) as the other ligand. Chloride (\(\text{Cl}\)) is the counter-ion.
09

Write the Names in Alphabetical Order

Next, we write the ligand names in alphabetical order followed by the name of the metal ion: pentaamminecarbonatochromium(III).
10

Write the Name of Counter-ion

We also need to write the name of the counter-ion: chloride.
11

Final Name

The name for this coordination compound is Pentaamminecarbonatochromium(III) chloride. (d) \(\left[\operatorname{Ir}\left(\text{NH}_{3}\right)_{4}\left(\text{H}_{2}\text{O}\right)_{2}\right]\left(\text{NO}_{3}\right)_{3}\)
12

Identify Ligands and Metal Ion

In this compound, we have \(\text{Ir}\) as the metal ion, \(\text{NH}_{3}\) (%Amine%) as one ligand, and \(\text{H}_{2}\text{O}\) (aqua) as the other ligand. Nitrate ( \(\text{NO}_{3}\)) is the counter-ion.
13

Write the Names in Alphabetical Order

Next, we write the ligand names in alphabetical order, followed by the name of the metal ion: tetraamminediaquadirconium(III).
14

Write the Name of Counter-ion

We also need to write the name of the counter-ion: nitrate.
15

Final Name

The name for this coordination compound is: Tetraamminediaquadirconium(III) nitrate.

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Most popular questions from this chapter

For each of the following metals, write the electronic configuration of the atom and its \(2+\) ion: (a) \(\mathrm{Mn},(\mathrm{b}) \mathrm{Ru}\), (c) Rh. Draw the crystal-field energy-level diagram for the \(d\) orbitals of an octahedral complex, and show the placement of the \(d\) electrons for each \(2+\) ion, assuming a strong-field complex. How many unpaired electrons are there in each case?

Two different compounds have the formulation \(\mathrm{CoBr}\left(\mathrm{SO}_{4}\right) \cdot 5 \mathrm{NH}_{3}\). Compound \(\mathrm{A}\) is dark violet, and compound \(\mathrm{B}\) is red-violet. When compound \(\mathrm{A}\) is treated with \(\mathrm{AgNO}_{3}(a q)\), no reaction occurs, whereas compound \(\mathrm{B}\) reacts with \(\mathrm{AgNO}_{3}(a q)\) to form a white precipitate. When compound \(\mathrm{A}\) is treated with \(\mathrm{BaCl}_{2}(a q)\), a white precipitate is formed, whereas compound \(\mathrm{B}\) has no reaction with \(\mathrm{BaCl}_{2}(a q)\). (a) Is Co in the same oxidation state in these complexes? (b) Explain the reactivity of compounds \(\mathrm{A}\) and \(\mathrm{B}\) with \(\mathrm{AgNO}_{3}(a q)\) and \(\mathrm{BaCl}_{2}(a q)\). (c) Are compounds \(A\) and \(B\) isomers of one another? If so, which category from Figure \(24.17\) best describes the isomerism observed for these complexes? (d) Would compounds \(\mathrm{A}\) and \(\mathrm{B}\) be expected to be strong electrolytes, weak electrolytes, or nonelectrolytes?

Based on the molar conductance values listed here for the series of platinum(IV) complexes, write the formula for each complex so as to show which ligands are in the coordination sphere of the metal. By way of example, the molar conductances of \(0.050 \mathrm{M} \mathrm{NaCl}\) and \(\mathrm{BaCl}_{2}\) are \(107 \mathrm{ohm}^{-1}\) and 197 ohm \(^{-1}\), respectively. $$ \begin{array}{ll} \hline \text { Complex } & \begin{array}{l} \text { Molar Conductance (ohm }^{-1} \text { ) }^{*} \\ \text { of } \mathbf{0 . 0 5 0 M \text { Solution }} \end{array} \\ \hline \mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{6} \mathrm{Cl}_{4} & 523 \\ \mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{4} & 228 \\ \mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{4} & 97 \\ \mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}_{4} & 0 \\ \mathrm{KPt}\left(\mathrm{NH}_{3}\right) \mathrm{Cl}_{5} & 108 \\ \hline \end{array} $$

A four-coordinate complex \(\mathrm{MA}_{2} \mathrm{~B}_{2}\) is prepared and found to have two different isomers. Is it possible to determine from this information whether the complex is square planar or tetrahedral? If so, which is it?

Give the number of \(d\) electrons associated with the central metal ion in each of the following complexes: (a) \(\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\), (b) \(\left[\mathrm{Mn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]\left(\mathrm{NO}_{3}\right)_{2}\) (c) \(\mathrm{Na}\left[\mathrm{Ag}(\mathrm{CN})_{2}\right]\) (d) \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Br}_{2}\right] \mathrm{ClO}_{4},(\mathrm{e})[\mathrm{Sr}(\mathrm{EDTA})]^{2-}\)
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