Question

The IUPAC name for the coordination compound $\left[CuC{l}_2{\left(C{H}_{3}N{H}_2\right)}_2\right]$ is
A. Dimethylamine copper (II) chloride
B. Bis (Dimethylamine) copper (II) chloride
C. Dichlorobis (methylamine) copper (II)
D. Dichlorobis (dimethylamine) copper (II)

Answer 1

Hint: We know that coordination compounds are substance aggravates that comprise a variety of anions or nonpartisan particles that are bound to a focal iota through arrange covalent bonds. Coordination mixes are additionally alluded to as coordination complexes.

Complete step by step answer:
Let us first understand how a coordination compound is written at the molecular level. The basic formula for writing a coordination compound is ${[M(Ligand{)}_x]}^{+}{ion}^{-}$.
The most important here is the significance of the square bracket. The complex compound is written inside the square bracket and the cation or anion is written outside. The formula of a coordination complex is written in a different order than its name.
The chemical symbol of the metal center is written first. The ligands are written next, with anion ligands coming before neutral ligands. If there is more than one anion or neutral ligand, they are written in alphabetical order according to the first letter in their chemical formula.Ligands are Lewis bases since they can donate electrons to the central metal atom.
The metal ions (M) are Lewis bases as they accept the electrons. The overall charge (ion) can be either positive, negative or neutral being cationic, anionic or neutral respectively.
The number of ligands that attach to a metal depends on whether the ligand is monodentate or polydentate.
In adding Some rules for naming coordination numbers are:
1. Ligands that act as anions which end in "-ide" are replaced with an ending "-o" (e.g., Chloride → Chloro). Anions ending with "-ite" and "-ate" are replaced with endings "-ito" and "-ato" respectively (e.g., Nitrite → Nitrito, Nitrate → Nitrato).
2. Most neutral molecules that are ligands carry their normal name. The few exceptions are the first four on the chart: ammine, aqua, carbonyl, and nitrosyl.
3. The number of ligands present in the complex is indicated with the prefixes di, tri, etc. The exceptions are polydentates that have a prefix already in their name. When indicating how many of these are present in a coordination complex, put the ligand's name in parentheses and use bis (for two ligands), tris (for three ligands), and tetrakis (for four ligands).
the first rules to follow are:
1. Ligands are named first in alphabetical order.
2.The name of the metal comes next.
3. The oxidation state of the metal follows, noted by a Roman numeral (II, IV).
For the coordination compound $\left[CuC{l}_2{\left(C{H}_{3}N{H}_2\right)}_2\right]$, the ligands are Chlorine and methylamine. Therefore, we will use the polydentate ligand names of "chloro" and "bis". Since two atoms of chlorine are present, we use the prefix –dichloro. The oxidation state of the central metal atom Cu is calculated to be +2. Thus, going alphabetically, the name of the coordination compound is Dichlorobis (methylamine) copper (II).

So, the correct answer is Option c.

Note: In order to name any coordination compound, the concept of ligands must be clear. Identifying the ligands, naming them and placing them alphabetically is important before proceeding further. In addition to the mentioned rules, identifying the metal atom and calculating its oxidation state must also be known.
The coordination intensifies framed by the progress components are shaded because of the presence of unpaired electrons that retain light in their electronic changes. For instance, the complex containing Iron (II) can show green and light green tones, yet the coordination mixes containing iron (III) have an earthy colored or yellowish-earthy colored tone.