Isomerism In Coordination Compounds

The geometry of a coordination compound is determined by the number of bonds or electron pairs around the central atom. - CCl (Carbon tetrachloride) has a tetrahedral geometry, not square planar. - CS (Carbon disulfide) has a linear geometry due to the arrangement of bonding pairs around carbon. - XeF (Xenon tetrafluoride) is a square planar compound. Xenon, in the +4 oxidation state, has four fluorine atoms arranged in a square planar geometry around the central xenon atom. This geometry is typical for d s p d -electronic configurations, where the central atom has two lone pairs. Thus, XeF is the correct square planar compound.

Acidity in alkenes is influenced by the electron-donating or electron-withdrawing effects of substituents attached to the double-bonded carbons. - CH=CH (ethene) has no substituents, making it the most acidic because there are no electron-donating groups to stabilize the conjugate base. - CH₃-C=CH (propene) has a methyl group attached to one of the carbons, which donates electron density and reduces acidity slightly compared to ethene. - CH₃-C=C-CH₃ (butene) has two methyl groups, further donating electron density, which makes it the least acidic. Thus, the order of acidity is CH=CH > CH₃-C=CH > CH₃-C=C-CH₃.

Concept: Ionization isomerism occurs when counter ions and ligands interchange between coordination sphere and ionization sphere.

Step 1: Analyze complexes.

• inside, outside
• inside, outside

Step 2: Identify type of isomerism.
Exchange between ligand and counter ion Ionization isomerism

Step 1: Understanding the Concept:
Linkage isomerism arises when an ambidentate ligand can coordinate to the metal center through two different donor atoms.

Step 2: Detailed Explanation:
The two complexes differ in the point of attachment of the NO group. In the first complex, [Fe(H O) (ONO)]Cl, the ligand is coordinated through the oxygen atom (nitrito-O). In the second complex, [Fe(H O) (NO )]Cl, the same ligand is coordinated through the nitrogen atom (nitro-N). This is a classic example of linkage isomerism.

Step 3: Final Answer:
These are examples of linkage isomerism.