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Introduction to Organometallic & 18 Electron Rule - Organometallic Chemistry Video Lecture | Chemistry for GRE Paper II

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FAQs on Introduction to Organometallic & 18 Electron Rule - Organometallic Chemistry Video Lecture - Chemistry for GRE Paper II

1. What is organometallic chemistry?
Ans. Organometallic chemistry is a branch of chemistry that studies compounds containing bonds between carbon and a metal. These compounds, known as organometallic compounds, play a crucial role in various chemical reactions and have applications in catalysis, synthesis, and materials science.
2. What is the 18-electron rule in organometallic chemistry?
Ans. The 18-electron rule is a guideline used in organometallic chemistry to predict the stability and reactivity of transition metal complexes. According to this rule, stable transition metal complexes tend to have a total of 18 valence electrons in their outermost shell. This rule helps in understanding the electronic structure and behavior of organometallic compounds.
3. How is the 18-electron count determined in organometallic complexes?
Ans. To determine the 18-electron count in an organometallic complex, count the total number of valence electrons contributed by the metal and the ligands attached to it. For example, if a complex has a metal with 10 valence electrons and three ligands each contributing 2 electrons, the total count would be 16. Additional electrons can be added by considering the charge on the complex or presence of additional ligands or ancillary ligands.
4. What are the implications of violating the 18-electron rule in organometallic chemistry?
Ans. Violating the 18-electron rule in organometallic chemistry can lead to increased reactivity and instability of the complex. Such complexes may undergo reactions more readily, including oxidative addition, reductive elimination, and ligand substitution. Understanding the consequences of violating this rule is essential for designing and studying new organometallic compounds with desired properties.
5. Can the 18-electron rule be applied to all transition metal complexes in organometallic chemistry?
Ans. While the 18-electron rule is a useful guideline, it may not apply to all transition metal complexes in organometallic chemistry. Some complexes, especially those involving highly electron-deficient metals or unusual ligands, may deviate from the 18-electron count. However, the rule still serves as a valuable starting point for understanding the stability and reactivity of most organometallic complexes.
131 videos|248 docs|77 tests

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