Domanda del libro di testo
The [Cr(H2O)6]3+ ion is violet, and [Cr(CN)6]3- is yellow. Explain this difference using crystal field theory. Use the colors to order H2O and CN- in the spectrochemical series.
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Ch.21 - Transition Elements and Coordination Chemistry
McMurry8th EditionChemistryISBN: 9781292336145
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TOC.tableOfContents
- 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
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McMurry 8th EditionCh.21 - Transition Elements and Coordination ChemistryProblema 21.96
McMurry 8th EditionCh.21 - Transition Elements and Coordination ChemistryProblema 21.96Capitolo 21, Problema 21.96
Draw the structures of all possible diastereoisomers of an octahedral complex with the formula MA2B2C2. Which of the diastereoisomers, if any, can exist as enantiomers?
Guida verificata passo dopo passo1
Identify the ligands: A, B, and C are different ligands in the octahedral complex MA_2B_2C_2.
Consider the arrangement of ligands around the central metal ion in an octahedral geometry.
Recognize that diastereoisomers are non-mirror image stereoisomers, so explore different spatial arrangements of the ligands.
Draw the possible arrangements: 1) A cis arrangement where two identical ligands are adjacent, and 2) A trans arrangement where two identical ligands are opposite each other.
Determine which of these arrangements can have non-superimposable mirror images, indicating the presence of enantiomers.
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Octahedral Complexes
Octahedral complexes are coordination compounds where a central metal atom is surrounded by six ligands at the corners of an octahedron. The arrangement of ligands can lead to different geometric isomers, such as facial (fac) and meridional (mer) isomers, which are crucial for understanding the stereochemistry of the complex.
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Percorso guidato
01:28
For octahedral complexes, Weak-Field Ligands create High-spin complexes and Strong-Field Ligands create Low-spin complexes.
Diastereoisomers
Diastereoisomers are stereoisomers that are not mirror images of each other. In octahedral complexes, the presence of multiple types of ligands can lead to different spatial arrangements, resulting in diastereoisomers. These isomers can have different physical properties and reactivities, making their identification important in coordination chemistry.
Enantiomers
Enantiomers are a specific type of stereoisomer that are non-superimposable mirror images of each other. For a diastereoisomer to exist as an enantiomer, it must have a chiral center, which in octahedral complexes can occur depending on the arrangement of the ligands. Understanding chirality is essential for determining which diastereoisomers can exist as enantiomers.
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02:33Drawing Enantiomers
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Domanda del libro di testo
Although Cl- is a weak-field ligand and CN- is a strong field ligand, [CrCl6]3- and [Cr(CN)6]3- exhibit approximately the same amount of paramagnetism. Explain.
115
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Domanda del libro di testo
The Ni2+(aq) cation is green, but Zn2+(aq) is colorless. Explain.
96
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Domanda del libro di testo
Which of the following complexes are diamagnetic?
(a) [Ni(H2O)6]2+
(b) [Co(CN)6]3-
(c) [HgI4]2- (tetrahedral)
(d) [Cu(NH3)4]2+ (square planar)
122
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Domanda del libro di testo
Predict the crystal field energy-level diagram for a square pyramidal ML5 complex that has two ligands along the axes but only one ligand along the z axis. Your diagram should be intermediate between those for an octahedral ML6 complex and a square planar ML4 complex.
109
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Domanda del libro di testo
For each of the following complexes, draw a crystal field energy-level diagram, assign the electrons to orbitals, and predict the number of unpaired electrons.
(d) [Cu(en)2]2+ (square planar)
118
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