DM - bonding and structure Flashcards

1
Q

coordinations number?

A

the number of coordinate (dative) bonds the the ligand forms with the central metal ion

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2
Q

shapes and bond angles of complex ions - SIX

A

octahedral shape

all bond angles are 90degrees

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3
Q

shapes and bond angles of complex ions - FOUR

A

tetrahedral shape
- bond angles are 109.5degrees

but occasionally
square planar
- bonds angles are 90degrees
- happens in a few complexes eg. cisplatin (Pt , 2NH3, 2Cl-)

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