Nd₂O₃, Cr₂O₃, and V₂O₃ Nanoparticles via Calcination: Synthesis, Characterization, Antimicrobial and Antioxidant Activities

Table 4

Absorption spectra and magnetic moment of metal complexes.

Compound	λ max. (nm)	λ max. (cm^−1)	Assignment	µeff (B.M.)
BDC	240	41,667		—
ADMPY	290	34,483	n⟶	—
Nd(III)	254	40,000		3.70
	295	33,898	n⟶
	569	17,575	^4I9/2⟶^4G5/2
Cr(III)	245	40,816		3.56
	299	33,445	n⟶
	377	26,525	^4A2g⟶^4T1g (P)
	489	20,450	^4A2g⟶^4T1g (F)
	548	18,248	^4A2g⟶^4T2g (F)
V(III)	249	40,161		2.54
	294	34,014	n⟶
	679	14,728	^3T1g⟶^3T2g (F)
	519	19,268	^3T1g⟶^3T1g (P)