Which of the following is not the correct systematic name of...

Which of the following is not the correct systematic name of corresponding compound? (a) $\mathrm{N} \mathrm{i}(\mathrm{CO})_{2},\left(\mathrm{PPh}_{3}\right)_{2}:$ Dicarbonylbis (rriphenyl phosphinc anickel(0) (b) $\mathrm{Na}_{2}\left[\mathrm{Ec}(\mathrm{CN})_{3} \mathrm{NO}\right]:$ Sodium pcaracyanoni- trosyl ferrare(IJ) (c) $\mathrm{NaMn}(\mathrm{CO})_{5}:$ Sorlium pcnracarbony $\mathrm{man}-$ ganare (I) (d) $\mathrm{SuCl}_{i}\left(\mathrm{Er}_{2} \mathrm{NH}\right)_{2}:$ Tetrachlorobis (diethylamine) tin(TV)

Which of the following is not the correct systematic name of corresponding compound?
(a) $\mathrm{N} \mathrm{i}(\mathrm{CO})_{2},\left(\mathrm{PPh}_{3}\right)_{2}:$ Dicarbonylbis (rriphenyl
phosphinc anickel(0)
(b) $\mathrm{Na}_{2}\left[\mathrm{Ec}(\mathrm{CN})_{3} \mathrm{NO}\right]:$ Sodium pcaracyanoni-
trosyl ferrare(IJ)
(c) $\mathrm{NaMn}(\mathrm{CO})_{5}:$ Sorlium pcnracarbony $\mathrm{man}-$ ganare (I)
(d) $\mathrm{SuCl}_{i}\left(\mathrm{Er}_{2} \mathrm{NH}\right)_{2}:$ Tetrachlorobis (diethylamine) tin(TV)

Key Concepts

Coordination Compound Nomenclature

This concept deals with the systematic way of naming coordination complexes following IUPAC rules. It involves identifying the central metal atom, the ligands attached to it, and the oxidation state of the metal. The nomenclature also requires the proper ordering of ligand names (often in alphabetical order), the use of prefixes to indicate the number of identical ligands, and the inclusion of the oxidation state in Roman numerals, ensuring that the name conveys all pertinent details about the compound's coordination sphere.

Ligand Naming Conventions

Ligand naming conventions are an integral part of inorganic nomenclature where each type of ligand is assigned a specific name depending on its mode of attachment and charge. For instance, neutral ligands are typically named as the ligand itself (such as water 'aqua' or carbon monoxide 'carbonyl'), while anionic ligands end in -o. Correct ligand names help avoid ambiguity, especially when the ligand can bind through different atoms or has isomeric forms, thus ensuring clear communication of the complex's structure.

Oxidation State Determination

Determining the oxidation state of the central metal is crucial for correctly naming coordination complexes. The oxidation state, usually indicated in parentheses in Roman numerals after the metal’s name, reflects the electron count attributed to the metal center after accounting for ligand charges. Correct oxidation state assignment is essential not only for formulating the compound’s name but also for understanding its chemical behavior and reactivity.

Use of Numerical Prefixes

The use of numerical prefixes in the naming of coordination compounds specifies the number of times a particular ligand appears in the complex. Prefixes such as mono-, di-, tri-, tetra-, and so on, are attached to the ligand name to indicate its quantity. This concept is important because it ensures that the structure of the complex is unambiguously communicated, particularly when multiple identical ligands are coordinated to the metal.

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