Synthesis of Novel VO(II)-Perimidine Complexes: Spectral, Computational, and Antitumor Studies

Table 3

Electronic transitions of perimidine compounds and their VO(II) complexes.

Compounds	μeff (BM)	d-d transition bands (cm^−1)	Intraligand and charge transfer (cm^−1)
(1) (C25H18N4O) (L^1)	—	—	31,746; 26,316; 23,923; 18,868
(2) [(VO)2 (SO4)2 (L^1)]H2O	1.66	15,290; 12800	35,714; 29,412; 25,641; 24,272; 17,857
(3) (C26H20N4O2) (L^2)	—	—	38,168; 28,249; 23,810; 19,048
(4) [(VO)2 (SO4)2 (L^2)]2H2O	1.68	15,393; 12750	37,037; 30,769; 26,316; 23,256; 17,544
(5) (C25H17N5O3) (L^3)	—	—	36,364; 30,303; 26,316; 23,810; 19,157
(6) [(VO)2 (SO4)2 (L^3)]H2O	1.66	15,873; 12830	37,037; 28,571; 26,667; 18,182
(7) (C25H17N4OCl) (L^4)	—	—	31,746; 25,974; 18,587
(8) [(VO)2 (SO4)2 (L^4)]H2O	1.67	15,385; 12,800	35,714; 30,303; 25,974; 24,390; 17,857
(9) (C25H17N4OCl) (L^5)	—	—	31,250; 26,316; 24,390; 18,182
(10) [(VO)2 (SO4)2 (L^5)]3H2O	1.65	15,873; 12780	35,714; 30,769; 25,000; 23,256; 18,868