Novel (N4) Macrocyclic Metal Complexes: Synthesis, Characterization, Spectral Studies and Anticancer Activity

Table 3: Electronic spectral data (nm) and magnetic moment (B.M.) of the macrocyclic metal complexes.

No	Compound	λ_max(nm)	(µ_eff B.M.)
1	[FeLCl₂].½EtOH.½H₂O	525^a,385^b,360^c,266^d	4.9
2	[CoLCl(OH)].H₂O	518^a,385^b,360^c,265^d	4.8
3	[CoLNO₃(OH)].1½H₂O	520^a,380^b,330^c,270^d	5.05
4	[CoL(OAc)OH].½EtOH	510^a,385^b,350^c,266^d	4.6
5	[[NiLCl H₂O]Cl.H₂O.½EtOH	520^a,385^b,345^c,268^d	2.6
6	[NiL(OAc)OH].½EtOH	510^a,345^c.260^d	2.86
7	[CuLCl₂].2H₂O	520^a,386^b,360^c,265^d	2.1
8	[CuLBr(OH)].½EtOH	528^a,335^c,260^d	2.12
9	[CuL( OH)]NO₃.H₂O	660^a,520^a,385^b,360^c,266^d	1.8
10	[CuL(OH)H₂O]ClO_4.½EtOH	525^a,385^b,360^c,270^d	2.07
11	[PdLCl H₂O]Cl.2½H₂O	500^a,388^b,362^c,266^d	Dia

^a: d–d transition.^b: LMCT. ^c: n→π^{* d}: π→π^*