Find IUPAC name of the hydrate isomer of CrCl3.6H2O, which is having lowest electrical conductivity.
Find IUPAC name of the hydrate isomer of CrCl3.6H2O, which is having lowest electrical conductivity.
The correct option is A Hexaaquachromium(III)chloride
Rules for writing IUPAC name in Coordination Chemistry:-
Rule 1- While naming a coordination compound cation is always named before the anion irrespective of the fact that whether complexion is cation or anion.
Rule 2- If there are more than one type of ligands present in any coordination compound, the name of the ligands is to be done in alphabetic order followed by the name of central metal atom/ion.
Name of anionic ligands ends with O.
For neutral ligands, the common name are used.
Rule 3- If the name of ligand already contains a numerical prefix, then the terms, bis, tris, tetrakis are used and the ligand to which they refer being placed in parentheses.
Rule 4- After naming the ligand in alphabetical order name of the central metal atom/ion is written.
If the complex is an anion, the name of metal ends with the suffix -ate for Latin name.
Rule 5- The oxidation state of the metal in the complex is given as a Roman numeral in parentheses.
Rule 6- The neutral complex molecule is named similar to that of the complex cation.
Rule 7- These are some ligands that may be attached to the central metal atom/ion through different atoms. For eg- NO2,CN,etc.
Like,
M−NO⟶ nitro
M−ONO2⟶ nitrito
M−SCN⟶ thiocyanato
M−NCS⟶ isothiocyanate
In presence of water molecules in primary valency which are ionisable; conduction of electricity is possible. In absence of H2O in primary valency causes lowering of electrical conduction.
Hence answer is option A [Cr(H2O)6]Cl
Rules for writing IUPAC name in Coordination Chemistry:-
Rule 1- While naming a coordination compound cation is always named before the anion irrespective of the fact that whether complexion is cation or anion.
Rule 2- If there are more than one type of ligands present in any coordination compound, the name of the ligands is to be done in alphabetic order followed by the name of central metal atom/ion.
Name of anionic ligands ends with O.
For neutral ligands, the common name are used.
Rule 3- If the name of ligand already contains a numerical prefix, then the terms, bis, tris, tetrakis are used and the ligand to which they refer being placed in parentheses.
Rule 4- After naming the ligand in alphabetical order name of the central metal atom/ion is written.
If the complex is an anion, the name of metal ends with the suffix -ate for Latin name.
Rule 5- The oxidation state of the metal in the complex is given as a Roman numeral in parentheses.
Rule 6- The neutral complex molecule is named similar to that of the complex cation.
Rule 7- These are some ligands that may be attached to the central metal atom/ion through different atoms. For eg- NO2,CN,etc.
Like,
M−NO⟶ nitro
M−ONO2⟶ nitrito
M−SCN⟶ thiocyanato
M−NCS⟶ isothiocyanate
In presence of water molecules in primary valency which are ionisable; conduction of electricity is possible. In absence of H2O in primary valency causes lowering of electrical conduction.
Hence answer is option A [Cr(H2O)6]Cl
