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9 Cards in this Set
- Front
- Back
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A complex ion is:
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A central metal ion surrounded by co-ordinately bonded ligands.
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A co-ordinate bond is:
– A co-ordination number is? |
A co-ordinate bond is a covalent bond where both of the shared electrons come from the same species.
– The co-ordination number is the number of co-ordinate bonds in a complex. |
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A ligand is:
– This characteristic is shared by... |
A species which donates a lone pair to a central metal ion.
– The characteristic of sharing lone pairs makes Ligands, Nucleophiles & Lewis bases all equivalent. |
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There are main ligand classifications:
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1) Unidentate ligands.
2) Bidentate ligands. 3) Multidentate ligands. (Technically speaking a bidentate ligand is also multidenate) |
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Unidentate ligands:
1) Co-ordinations formed per ligand? 2) There are 2 types? |
1) 1.
2) Small uncharged ones and large, charged ones. |
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Small uncharged unidentate ligands:
1) Co-ordinations number around metal ion? 2) Examples? |
1) 6.
2) H2O & NH3. |
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Large charged unidentate ligands:
1) Co-ordination number around metal ion? 2) Examples? |
1) 4.
2) Cl-, CN-, OH- |
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Bidentate Ligands:
1) Co-ordinations formed per ligand? 2) Co-ordination number around metal ion? 3) Examples? |
1) 2.
2) 6. 3) Ethanedioc acid & Ethane-1,4,diamine. |
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Multidentate ligands:
1) We need to know of one? 2) It forms how many co-ordinations per ligand? – So... |
1) EDTA.
2) 6 per ligand. – So it'll completely surround the central metal ion. |
