Textbook Question
What is the systematic name for each of the following coordination compounds?
(c) K3[Fe(C2O4)3]
(d) [Co(en)2(NH3)CN]Cl2
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Ch.21 - Transition Elements and Coordination Chemistry
McMurry8th EditionChemistryISBN: 9781292336145
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Table of contents
- Ch.1 - Chemical Tools: Experimentation & Measurement143
- Ch.2 - Atoms, Molecules & Ions134
- Ch.3 - Mass Relationships in Chemical Reactions149
- Ch.4 - Reactions in Aqueous Solution157
- Ch.5 - Periodicity & Electronic Structure of Atoms92
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory73
- Ch.7 - Covalent Bonding and Electron-Dot Structures47
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure51
- Ch.9 - Thermochemistry: Chemical Energy104
- Ch.10 - Gases: Their Properties & Behavior138
- Ch.11 - Liquids & Phase Changes43
- Ch.12 - Solids and Solid-State Materials56
- Ch.13 - Solutions & Their Properties98
- Ch.14 - Chemical Kinetics79
- Ch.15 - Chemical Equilibrium107
- Ch.16 - Aqueous Equilibria: Acids & Bases94
- Ch.17 - Applications of Aqueous Equilibria125
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium66
- Ch.19 - Electrochemistry130
- Ch.20 - Nuclear Chemistry73
- Ch.21 - Transition Elements and Coordination Chemistry122
- Ch.22 - The Main Group Elements155
- Ch.23 - Organic and Biological Chemistry43
Chapter 21, Problem 82a
Write the formula for each of the following compounds.
(a) Tetraammineplatinum(II) chloride
(b) Sodium hexacyanoferrate(III)
Verified step by step guidance1
Identify the components of the compound name: ligands, central metal, oxidation state, and counter ions.
For (a) Tetraammineplatinum(II) chloride: Recognize 'tetraammine' indicates four ammonia (NH_3) ligands, 'platinum(II)' indicates Pt with a +2 oxidation state, and 'chloride' indicates Cl^- as the counter ion.
Write the formula for (a) by combining the components: [Pt(NH_3)_4]Cl_2, where the complex ion [Pt(NH_3)_4]^{2+} is balanced by two Cl^- ions.
For (b) Sodium hexacyanoferrate(III): Recognize 'hexacyano' indicates six cyanide (CN^-) ligands, 'ferrate(III)' indicates Fe with a +3 oxidation state, and 'sodium' indicates Na^+ as the counter ion.
Write the formula for (b) by combining the components: Na_3[Fe(CN)_6], where the complex ion [Fe(CN)_6]^{3-} is balanced by three Na^+ ions.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Coordination Compounds
Coordination compounds consist of a central metal atom bonded to surrounding molecules or ions called ligands. The ligands can be neutral or charged and can vary in number and type. Understanding how to identify the central metal and the ligands is crucial for writing the correct chemical formula.
Oxidation States
The oxidation state of an element in a compound indicates its degree of oxidation or reduction. In coordination compounds, the oxidation state of the central metal is often specified in the name, such as in 'platinum(II)' for tetraammineplatinum(II) chloride. Knowing how to determine and apply oxidation states is essential for accurately representing the compound's formula.
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Oxidation Numbers
Nomenclature of Coordination Complexes
The nomenclature of coordination complexes follows specific rules set by IUPAC. The name typically includes the ligands listed in alphabetical order, followed by the metal and its oxidation state in parentheses. Familiarity with these naming conventions is necessary to translate the names of compounds into their correct chemical formulas.
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Related Practice
Textbook Question
Write the formula for each of the following compounds.
(c) Hexacarbonylmolybdenum(0)
(d) Diamminebis(ethylenediamine)chromium(III) chloride
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Textbook Question
Tris(2-aminoethyl)amine, abbreviated tren, is the tetradentate ligand N(CH2CH2NH2)3. Using to represent each of the three NCH2CH2NH2 segments of the ligand, sketch all possible isomers of the octahedral complex [Co(tren)BrCl]+.
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Textbook Question
Which of the following complexes are chiral?
(a) Pt(en)Cl2
(b) cis-[Co(NH3)4Br2]+
(c) cis-[Cr(en)2(H2O)2]3+
(d) [Cr(C2O4)3]3-
Textbook Question
What is the systematic name for each of the following coordination compounds?
(a) [Cu(NH3)4]SO4
(b) Cr(CO)6
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