Domanda del libro di testo
Write the formula for each of the following compounds.
(c) Hexacarbonylmolybdenum(0)
(d) Diamminebis(ethylenediamine)chromium(III) chloride
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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 88
McMurry 8th EditionCh.21 - Transition Elements and Coordination ChemistryProblema 88Capitolo 21, Problema 88
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-
Guida verificata passo dopo passo1
Identify the geometry of each complex. For example, determine if the complex is octahedral, square planar, or tetrahedral.
Determine if the complex has a plane of symmetry or a center of symmetry. A chiral complex will lack these symmetries.
For each complex, consider the ligands and their arrangement around the central metal atom. Check if swapping any two ligands results in a non-superimposable mirror image.
Examine the specific ligands: 'en' (ethylenediamine) is a bidentate ligand that can create chiral centers, while 'C2O4' (oxalate) is also bidentate but can form symmetrical structures.
Analyze each complex: (a) Pt(en)Cl2 is square planar and typically not chiral; (b) cis-[Co(NH3)4Br2]+ is octahedral and can be chiral if it lacks symmetry; (c) cis-[Cr(en)2(H2O)2]3+ is octahedral and can be chiral due to the arrangement of bidentate ligands; (d) [Cr(C2O4)3]3- is octahedral and typically not chiral due to symmetrical arrangement of oxalate ligands.
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Chirality
Chirality refers to the geometric property of a molecule that makes it non-superimposable on its mirror image, much like left and right hands. A chiral molecule typically has an asymmetric carbon atom, but in coordination complexes, chirality can arise from the arrangement of ligands around a central metal atom. Identifying chirality is crucial for understanding the optical activity and potential biological interactions of the complexes.
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02:37
Chirality
Coordination Complexes
Coordination complexes consist of a central metal atom bonded to surrounding molecules or ions called ligands. The geometry of these complexes can vary, influencing their properties, including chirality. Understanding the coordination number and the spatial arrangement of ligands is essential for determining whether a complex is chiral or achiral.
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00:43Coordination Complexes Example
Geometric Isomerism
Geometric isomerism occurs when compounds have the same molecular formula but differ in the spatial arrangement of their atoms. In coordination chemistry, this can manifest as cis and trans isomers, which can have different properties, including chirality. Recognizing these isomers is vital for analyzing the chirality of the given complexes in the question.
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02:02Geometric Isomers
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Consider the octahedral complex [Co(en)(dien)Cl]2+, where dien = H2NCH2CH2NHCH2CH2NH2, which can be abbreivated
(a) The dien (diethylenetriamine) ligand is a tridentate ligand. Explain what is meant by 'tridentate' and why dien can act as a tridentate ligand.
(b) Draw all possible stereoisomers of [Co(en)(dien)Cl]2+ (dien is a flexible ligand). Which stereoisomers are chiral, and which are achiral?
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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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Write the formula for each of the following compounds.
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Write the formula for each of the following compounds.
(c) Tris(ethylenediamine)platinum(IV) sulfate
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