Textbook Question
What is the systematic name for each of the following coordination compounds?
(a) Cs[FeCl4]
(b) [V(H2O)6](NO3)3
162
views
Ch.21 - Transition Elements and Coordination Chemistry
McMurry8th EditionChemistryISBN: 9781292336145
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch.1 - Chemical Tools: Experimentation & Measurement170
- Ch.2 - Atoms, Molecules & Ions160
- Ch.3 - Mass Relationships in Chemical Reactions169
- Ch.4 - Reactions in Aqueous Solution199
- Ch.5 - Periodicity & Electronic Structure of Atoms102
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory92
- Ch.7 - Covalent Bonding and Electron-Dot Structures61
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure59
- Ch.9 - Thermochemistry: Chemical Energy122
- Ch.10 - Gases: Their Properties & Behavior155
- Ch.11 - Liquids & Phase Changes54
- Ch.12 - Solids and Solid-State Materials73
- Ch.13 - Solutions & Their Properties120
- Ch.14 - Chemical Kinetics98
- Ch.15 - Chemical Equilibrium125
- Ch.16 - Aqueous Equilibria: Acids & Bases110
- Ch.17 - Applications of Aqueous Equilibria147
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium86
- Ch.19 - Electrochemistry154
- Ch.20 - Nuclear Chemistry96
- Ch.21 - Transition Elements and Coordination Chemistry156
- Ch.22 - The Main Group Elements187
- Ch.23 - Organic and Biological Chemistry51
Chapter 21, Problem 21.6
What is the name of the compound [Fe(H2O)5(SCN)]Cl2?
(a) pentaaquathiocyanatoiron(III) chloride
(b) pentaaquachlorothiocyanato iron(III)
(c) pentaaquathiocyanatoiron(III) dichloride
(d) pentaaquathiocyanatoiron(II) chloride
Verified step by step guidance1
Identify the central metal ion in the complex, which is iron (Fe).
Determine the oxidation state of the iron. The complex has a charge of +2 from the two chloride ions (Cl^-), and the thiocyanate (SCN^-) has a charge of -1. The water molecules (H2O) are neutral. Therefore, the oxidation state of iron can be calculated by balancing the charges.
Recognize the ligands present in the complex: five water molecules (H2O) and one thiocyanate ion (SCN^-).
Name the ligands: 'aqua' for water and 'thiocyanato' for SCN^-. The prefix 'penta' indicates five water molecules.
Combine the information to name the compound: 'pentaaquathiocyanatoiron(III) chloride', considering the oxidation state of iron and the number of chloride ions.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?
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 or ion bonded to surrounding molecules or ions called ligands. In this case, iron (Fe) is the central metal, and the ligands include water (H2O) and thiocyanate (SCN). Understanding the structure and naming conventions of these compounds is essential for identifying them correctly.
Recommended video:
Guided course
01:32
Coordination Compound Naming
Nomenclature of Coordination Complexes
The nomenclature of coordination complexes follows specific rules set by the International Union of Pure and Applied Chemistry (IUPAC). Ligands are named first in alphabetical order, followed by the metal's name, which is modified based on its oxidation state. In this question, recognizing the correct order and naming conventions is crucial for determining the correct name of the compound.
Recommended video:
Guided course
00:43Coordination Complexes Example
Oxidation States
The oxidation state of a metal in a coordination compound indicates its charge and is vital for proper naming. In the compound [Fe(H2O)5(SCN)]Cl2, the iron can be in either the +2 or +3 oxidation state. Identifying the correct oxidation state is necessary to accurately name the compound and distinguish between options that may differ based on this aspect.
Recommended video:
Guided course
02:42Oxidation Numbers
Related Practice
Textbook Question
Predict the crystal field energy-level diagram for a linear ML2 complex that has two ligands along the :
108
views
Textbook Question
Constitutional isomers of a ruthenium(II) coordination compound are shown below.
(a) Give the formula and name for structures 1-3.
(b) Which structures are linkage isomers?
(c) Which structures are ionization isomers?
93
views
Textbook Question
Draw the structure of all isomers of the octahedral complex [NbX2Cl4]- (X- = NCS-), and identify those that are linkage isomers.
99
views
Textbook Question
There are two possible [M(OH)4]- complexes of first-series transition metals that have three unpaired electrons.
(a) What are the oxidation state and the identity of M in these complexes?
(b) Using orbital diagrams, give a valence bond description of the bonding in each complex.
(c) Based on common oxidation states of first-series transition metals (Figure 21.6), which [M(OH)4]- complex is more likely to exist?
<QUESTION REFERENCES FIGURE 21.6>-
106
views
Textbook Question
Classify the following ligands as monodentate, bidentate, tri-dentate, or tetradentate. Which can form chelate rings?
(a)
(b)
(c)
(d)
108
views