Table 10.

Electronic spectral data of few Ln(III) complexes of BIA.

Complex	Assignments	λ max of Ln+3	λ max of complex	β	Other parameters
		ion(cm−1)	(cm−1)
(1) [Pr3(BIA)2(NO3)7(H2O)4] 3H2O	3H4- - -3P2	22 512	22 502	0.999 55
	- - -3P0	20 716	20 678	0.998 16	δ = 0.105 11
	- - -1D2	16 854	16 840	0.999 16	b1/2 = 0.022 91
					η = 0.032 42
				0.998 95
(2) [Nd3(BIA)2(NO3)7(H2O)4] 3H2O	4I9/2- - -2G9/2	19 747	19 565	0.990 78
	- - -4G5/2	17 253	17 182	0.995 88	δ = 0.707 97
	- - -4F9/2	14 594	14 450	0.990 13	b1/2 = 0.0592
	- - -4F5/2	12 853	12 790	0.995 09	η = 0.084 14
				0.992 97