Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074



Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Give the formula and name of a square-planar complex of Pt2+ with one nitrite ion (NO2, which binds to Pt2+ through N), one chloride ion, and two ammonia molecules as ligands. Are isomers possible? If so, draw the structure of each isomer, and tell what type of isomerism is observed.

Interpretation Introduction

Interpretation: The formula of the given coordination complex has to be predicted.

Concept introduction:

Formula of coordination compounds: Formula of a coordination complex is able to predict by using the metal ion and ligands, and to derive the oxidation number of the coordinated metal ion.

Isomerism: Isomers are compounds with same molecular formula with different arrangements of atoms.

  • Structural isomers:  have same molecular formula but different bonding arrangements of atoms. It is classified into coordination isomer (occurs by exchanging a coordinated ligand and the counter-ions) and linkage isomers (ligand attached through different atoms to the metal).
  • Stereoisomers: differ in their spatial arrangement of atoms.

Given:Metal ion : Pt2+Ligands:one nitrite ionrepresentedas(NO2)-onechlorideionrepresentedasCl-two ammoniamoleculerepresentedas(NH3)2Overallchargeofthecomplex:[Pt(NO2)(NH3)2Cl]

The oxidation number of metal ion is +2, the charge of the ammonia molecules are neutral (carries no charge) but the charge of chloride ion is -1

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