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Chapter 24: Problem 39

From each of the following names, you should be able to deduce the formula of the complex ion or coordination compound intended. Yet, these are not the best systematic names that can be written. Replace each name with one that is more acceptable: (a) cupric tetraammine ion; (b) dichlorotetraammine cobaltic chloride; (c) platinic(IV) hexachloride ion; (d) disodium copper tetrachloride; (e) dipotassium antimony(III) pentachloride.

Short Answer

Expert verified
Correct names according to the IUPAC rules are: (a) \([Cu(II)(NH_3)_4]^{2+}\) ion; (b) \([Co(III)(NH_3)_4 Cl_2]Cl\); (c) \([Pt(IV)Cl_6]^{2-}\) ion; (d) \(Na_2[Cu(II)Cl_4]\); (e) \(K_2[Sb(III)Cl_5]\).

Step by step solution

01

Understand the Nomenclature Rules

The first step requires an understanding of nomenclature rules. The name of a transition metal ion is written in roman numerals in parentheses to indicate the oxidation number of the metal, followed by the name of the ligand. The ligand name ends with 'o'.
02

Naming cupric tetraammine ion

This complex ion can be expressed as \([Cu(NH_3)_4]^{2+}\). The correct name, following the IUPAC rules, is \([Cu(II)(NH_3)_4]^{2+}\) ion.
03

Naming dichlorotetraammine cobaltic chloride

The molecular formula of this compound is \([Co(NH_3)_4 Cl_2]Cl\). According to IUPAC rules, this would be correctly named as \([Co(III)(NH_3)_4 Cl_2]Cl\).
04

Naming Platinic(IV) hexachloride ion

The formula for this can be given as \([PtCl_6]^{2-}\). According to the rules, the correct name should be \([Pt(IV)Cl_6]^{2-}\) ion.
05

Naming disodium copper tetrachloride

The formula for this compound is \(Na_2[CuCl_4]\). Therefore, the correct IUPAC name is \(Na_2[Cu(II)Cl_4]\).
06

Naming dipotassium antimony(III) pentachloride

The formula for this compound is \(K_2[SbCl_5]\). Therefore, according to the naming rules, the correct name would be \(K_2[Sb(III)Cl_5]\).

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Most popular questions from this chapter

Name the following coordination compounds. Which one(s) exhibit(s) isomerism? Explain. (a) \(\left[\operatorname{CoBr}\left(\mathrm{NH}_{3}\right)_{5}\right] \mathrm{SO}_{4}\) (b) \(\left[\operatorname{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]\left[\mathrm{Co}(\mathrm{CN})_{6}\right]\) (c) \(\mathrm{Na}_{3}\left[\mathrm{Co}\left(\mathrm{NO}_{2}\right)_{6}\right]\) (d) \(\left[\mathrm{Co}(\mathrm{en})_{3}\right] \mathrm{Cl}_{3}\)

Draw a plausible structure to represent: (a) \(\left[\mathrm{PtCl}_{4}\right]^{2-}\) (b) \(\operatorname{fac}-\left[\operatorname{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]^{2+}\) (c) \(\left[\mathrm{CrCl}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5}\right]^{2+}\)

Which of these general structures for a complex ion would you expect to exhibit cis and trans isomerism? Explain. (a) tetrahedral (b) square-planar (c) linear

Write appropriate formulas for the following. (a) potassium hexacyanoferrate(III) (b) bis(ethylenediamine)copper(II) ion (c) pentaaquahydroxoaluminum(III) chloride (d) amminechlorobis(ethylenediamine) chromium(III) sulfate (e) tris(ethylenediamine)iron(III) hexacyanoferrate(II)

Acetyl acetone undergoes an isomerization to form a type of alcohol called an enol. The enol, abbreviated acacH, can act as a bidentate ligand as the anion acac^-. Which of the following compounds are optically active: \(\operatorname{Co}(\mathrm{acac})_{3} ;\) trans\(\left[\mathrm{Co}(\mathrm{acac})_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right] \mathrm{Cl}_{2} ; \operatorname{cis}-\left[\mathrm{Co}(\mathrm{acac})_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right] \mathrm{Cl}_{2} ?\)
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