Isomerism
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What geometries are possible for a molecule with co-ordination number 4?
Square planar Tetrahedral
What angle is in square planar?
90 degrees
What angle is in tetrahedral?
109 degrees
What geometries are possible for a molecule with a co-ordination number 5?
Trigonal bipyramidal Square based pyramidal
What is the angle in SBP?
90 degrees
What are the angles in TBP?
120 and 90 degrees
What geometries are possible for a molecule with a co-ordination number 6?
Octahedral Prismatic
What is the angle in octahedral?
90 degrees
What are the angles in prismatic?
85 and 95 degrees
What are the two types of ligand?
Neutral Anionic
What are some examples of neutral ligands?
H2O NH3 PPh3
What is used for bonding in neutral ligands?
Lone pair
What are some examples of anionic ligands?
F- Cl- O 2- Me- H-
What is used for bonding in anionic ligands?
Negative charge
What is an ambidentate ligand?
Ligands that can bind using different atoms and can choose which one they want to bind to
What is an example of a ambidentante ligand?
Nitrite (-NO2) Can bind through either the nitrogen or the oxygen
What is a chelate ring?
A ring formed using a bidentante ligand
What is a bidentate ligand?
One ligand that has two binding sites and binds at the same time
Why is it better to use one bidentante ligand compared to 2 monodentate ligands?
The chelate rings formed are very stable
What are the two types of square planar?
Cis Trans
What is a cis square planar molecule?
The X groups are adjacent
What is a trans square planar molecule?
The X groups are opposite to each other
How many isomers of the tetrahedral geometries are there?
1
How many isomers for [MX2L4] can you form?
2 - one cis and one trans