Effect of Counterion on the Solvatochromic Properties of Heteroleptic Chelate Copper(II) Complexes

Table 1

Color, yields, and analytical data of the complexes obtained.

Complex number	Complex (color/yield)	Analysis; found (calcd)
		C%	H%	N%	Cu%
1	[Cu(L)(acac)]ClO4	46.71	4.88	5.14	11.68
	(bluish violet/74%)	(46.84)	(4.68)	(5.20)	(11.80)
2	[Cu(L)(acac)]B(Ph)4	71.10	6.23	3.68	8.36
	(Purple/65%)	(71.28)	(5.98)	(3.69)	(8.38)
3	[Cu(L)(acac)]PF6	43.33	4.20	4.58	10.82
	(Purple/43%)	(43.19)	(4.32)	(4.80)	(10.88)
4	[Cu(L)(acac)]BF4	48.19	4.47	5.01	11.99
	(Deep blue/57%)	(47.97)	(4.79)	(5.33)	(12.09)