Question

Which is not correctly matched?
Complex compounds & IUPAC name

• A. $K\left[Cr{F}_{4}O\right]$ - Potassium tetrafluorooxo chromate (v)
• B. $Na\left[BH\right(OC{H}_3{)}_3]$ - Sodium hydido trimethoxy borate (III)
• C. $\left[Be\right(C{H}_3-CO-CH-CO-C_6{H}_5{)}_2{]}^0$ - Bis (Benzoylacetonato beryllium (III)
• D. $H\left(AuC{l}_4\right]$ - Hydrogen tetrachloro aurate (III)

Answer 1

Answer: (B), (C), (D)

The correct options are
B $Na\left[BH\right(OC{H}_3{)}_3]$ - Sodium hydido trimethoxy borate (III)
C $H\left(AuC{l}_4\right]$ - Hydrogen tetrachloro aurate (III)
D $\left[Be\right(C{H}_3-CO-CH-CO-C_6{H}_5{)}_2{]}^0$ - Bis (Benzoylacetonato beryllium (III)

The IUPAC name of the complex $K\left[Cr{F}_{4}O\right]$ is Potassium tetrafluorooxo chromate (v). The cation is potassium and is named first.
Chromium metal in the complex anion is named as chromate(V). The roman numerals in the parenthesis indicates the oxidation state of chromium.
The ligands are named in the alphabetical manner.
Hence, option A is correctly matched.

The IUPAC name of the complex $Na\left[BH\right(OC{H}_3{)}_3]$ is sodium hydridotrimethoxoborate(III) and not Sodium hydido trimethoxy borate (III).
The ligand $OC{H}_3$ is named as methoxo and not as methoxy.
Hence, option B is incorrectly matched.

The IUPAC name of the complex $\left[Be\right(C{H}_3-CO-CH-CO-C_6{H}_5{)}_2{]}^0$ is Bis (benzoyl acetaonate) beryllium(II) and not Bis (Benzoylacetonato beryllium (III)
The ligand is named as benzoyl acetaonate and not as benzoyl acetaonato. The oxidation state of beryllium is +2.
Hence, option C is incorrectly matched.

The IUPAC name of the complex $H\left(AuC{l}_4\right]$ is Tetrachloroauric(III)acid and not Hydrogen tetrachloro aurate (III)
It is an acid and not a salt.
Hence, option D is incorrectly matched.