Question

Iupac name of pt cl2 ( nh3)4 br2

Answer 1

pt platinum

cl2 chlorine

(Nh3)4br2 Ammonium bromide

Answer 2

IUPAC name of $[PtCl_2(NH_3)_4Br_2]$ is potassium tetraaminedichlorodibromo platinum (IV)

Explanation:

Rules for naming of the coordination compounds :

a) The ligands are named first then metal.

b) The charge of metal indicated with the Roman numerals and enclosed in the parenthesis after metal name.

c) The ligands are named in alphabetical order before the metal ion.

d) Ligands that include a numerical prefix in the name use the prefixes bis for 2, tris for 3, or tetrakis for 4 to indicate their number.

e) If the complex ion is an anion, we drop the ending of the metal name and add –ate.

In the given coordination compound, Pt is the platinum metal,  Cl , $NH_3$ and Br are the ligands named as  chloro, ammine and bromo.

Ammine is neutral , chloro is having an oxidation state of -1 and bromo is having an oxidation state of -1.

x+2(-1)+4(0)+2(-1)=0

x=+4

Hence, the IUPAC name of $[PtCl_2(NH_3)_4Br_2]$ is potassium tetraaminedichlorodibromo platinum (IV)

Rules for naming coordination compound

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