Bonding In Coordination Compounds
Chapter Name : Coordination Compounds |
Sub Topic Code : 102_12_09_05_04 |
Topic Name : Bonding In Coordination Compounds |
|
Sub Topic Name : Crystal Field Theory |
|
Introduction
Coordination complex or metal complex, consists of an atom or ion (usually metallic), and a surrounding array of bound molecules or anions, that are in turn known as ligands or complexing agents.
Pre-Requisites:
Coordination Compounds
Activity:
Nickel tetracarbonyl.
Real Life Question:
What is crystal field theory?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Crystal field theory | Crystal field theory (CFT) is a model that describes the breaking of degeneracies of electronic orbital states, usually d or f orbitals, due to a static electric field produced by a surrounding charge distribution (anion neighbors). |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Ligand field theory | Ligand field theory (LFT) describes the bonding, orbital arrangement, and other characteristics of coordination complexes. |
Real life uses :
Study of organometals.
Places to visit :
Pharmacy.
Practical examples around us
| Examples | Explainations |
|---|---|
| Nickel tetracarbonyl | It is an intermediate in the Mond process for the purification of nickel and a reagent in organometallic chemistry. |
What you learn in Theory:
Crystal field theory (CFT) is a model that describes the breaking of degeneracies of electronic orbital states, usually d or f orbitals, due to a static electric field produced by a surrounding charge distribution (anion neighbors).
What you learn in Practice:
CFT successfully accounts for some magnetic properties, colours, hydration enthalpies, and spinel structures of transition metal complexes, but it does not attempt to describe bonding.