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Summary Alevel Chemistry - Shapes of Ions and Complexed Ions - Haemoglobin Notes
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Alevel Chemistry - Shapes of Ions and Complexed Ions - Haemoglobin Notes
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Shapes of Ions and Complexed Ions -Haemoglobin
A ligand is an ion, atom or molecule that has at least one lone pair of electrons which it can
donate to form a coordinate bond.
The shape of a complexed ion is dependant on the size of the ligands and their coordination
number.
A complex is a central metal ion surrounded by coordinately bonded ligands.
Ligands that form one coordinate bond are called monodentate.
shape name bond number of coordinate
angles bonds
octahedral 90 6
tetrahedral 109.5 4
square 90 4
planar
linear 180 2
Monodentate Ligands (:NH3,:OH,:CN) Bidentate
Ligand (:NH2CH2CH2:NH2)
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