Electrophilic and nucleophilic Parr functions, local electrophilicity, ω_k, and nucleophilicity, N_k, values (in eV).

	Number of atom	P k +	P k −	ω k	N k
Methylazide	N1	−0.01	0.65	−0.01	1.40
	N3	0.56	0.45	0.67	0.97
Dinuclear Cu(i)-acetylide	C4	−0.04	−0.06	−0.06	−0.37
	C5	−0.01	0.16	−0.01	0.96
	Cu6	0.43	0.16	0.75	0.94
	Cu7	0.41	0.16	0.71	0.93
Reactive complex	N1	0.05	0.09	0.10	0.36
	N3	0.42	0.07	0.91	0.26
	C4	−0.01	0.26	−0.02	1.06
	C5	0.01	0.12	0.02	0.49