Table 5.

Cyclic voltametry of gold triphenylphosphine complexes and the parent ligands.

Compound	(a) E pa(mV)	(b) E pa(mV)	(c) E 1/2(mV)	E pa-E pc(mV)
L2	181	113	147	70
[Au(L2)(PPh3)]NO3	252	162	207	90
L3	150	30	—	120
[Au(L3)(PPh3)]NO3	294	186	—	108
L4	198	115	158	83
[Au(L4)(PPh3)]NO3	219	141	180	78

^(a)anodic potential; ^(b)cathodic potential; ^(c)half wave potential (E _pa + E _pc)/2.