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metal complex's

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Total cards: 12•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (12)

#1
Front (Question)

general rule for metal complex shapes

Back (Answer)

for 4 ligands, if the metal is platinum of palladium then its square planar. otherwise its tetrahedral

#2
Front (Question)

copper complex colours/states

Back (Answer)

6 (H2O) ligands: pale blue solution 4 (H2O), 2(OH) ligands: blue precipitate 2 (H2O), 4(NH4) ligands: dark blue solution

#3
Front (Question)

iron 2+ complex colours/solutions

Back (Answer)

6 (H2O) ligands: pale green solution 4 (H2O), 2(OH) ligands: green precipitate (slowly turns brown due to oxidation to Fe3+)

#4
Front (Question)

iron 3+ complex colours/solutions

Back (Answer)

6 (H2O) ligands: yellow solution 3 (H2O), 3 (OH) ligands: orange precipitate

#5
Front (Question)

manganese complex colours/states

Back (Answer)

6 (H2O) ligands: pale pink solutions 4 (H2O), 2 (OH) ligands: pink precipitate

#6
Front (Question)

chromium complex colours/states

Back (Answer)

6 (H2O) ligands: green solution 3 (H2O), 3(OH) ligands: grey-green precipitate 6 (OH) ligands: dark green solution 6 (NH3) ligands: purple solution

#7
Front (Question)

which metal complexes have further reactions with excess OH- ions or NH3

Back (Answer)

Cu with NH3 to form [Cu(NH3)4 (H2O)2]^2+ Cr with OH- to form [Cr(OH)6]^3- Cr with NH3 to form [Cr(NH3)6]^3+

#8
Front (Question)

why are CN- or CO poisonous

Back (Answer)

they bond to haemoglobin in a ligand substitution reaction instead of oxygen, preventing oxygen transfer

#9
Front (Question)

how does cisplatin kill cancer cells

Back (Answer)

prevents DNA replication by a ligand substitution reaction. two coordinate bonds are formed between the platinum and nitrogen atoms on 2 adjacent bases. the nitrogen replaces the 2 chlorine ligands. it also targets healthy cells

#10
Front (Question)

what affects metal complex colours

Back (Answer)

identity of the metal, oxidation state, ligands type, coordination number.

#11
Front (Question)

why do metal complex’s have colours

Back (Answer)

the difference in energy of the split d orbitals corresponds to the energy of light absorbed. electrons are excited to higher energy levels. the colour of the complex corresponds to the frequencies of light not absorbed

#12
Front (Question)

what is meant by the d-orbitals in metal complex’s being ‘split’

Back (Answer)

the d-orbitals have different energies because each orbital interacts differently with the bonding ligands.