Transition metals complexes

Question 1

What is a ligand?

Answer 1

Ligands are electron donors which are usually negative ions or molecules that have one or more non-bonding (lone) pairs of electrons.

Question 2

monodentate meaning and example?

Answer 2

they donate one pair of electrons to the central transition metal ion i.e. form a dative bond
water

Question 3

Bidentate example?

Answer 3

oxalate ion

Question 4

hexadenate ligand example

Answer 4

EDTA (ethylenediaminetetraacetate)

Question 5

How is oxalate written in compound?

Answer 5

O2C2O2 is used in the formula, rather than C2O4.

Question 6

If the ligand is a negative ion ending in -ide then what?

Answer 6

name changes to end in ‘o’. Chloride become chlorido and cyanide becomes cyanido.

Question 7

If the complex is a negative ion overall the name of the complex ends in

Answer 7

-ate

Question 8

if the complex is a salt the name of the positive ion what?

Answer 8

before the name of the negative ion.

Question 9

Ammonia

Answer 9

NH3 (ammine)

Question 10

Bromide,

Answer 10

Br‑ (bromido)

Question 11

Chloride

Answer 11

Cl‑ (chlorido)

Question 12

Cyanide

Answer 12

CN‑ (cyanido)

Question 13

Hydroxide,

Answer 13

OH‑ (hydroxido)

Question 14

Oxalate,

Answer 14

C2O4^2‑ (oxalato)

Question 15

heterogeneous catalysts

Answer 15

they are in a different physical state to the reactants.