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

Table 4

The solvent parameter values.

Solvent	DN	AN	𝐸𝑇 (30)	𝛽	𝛼	π *
DCM	0.0	20.4	40.7	0.10	0.13	0.82
NM	2.7	20.5	46.3	0.06	0.22	0.85
AN	14.1	18.9	45.6	0.40	0.19	0.75
Ac	17.0	12.5	42.2	0.43	0.08	0.71
THF	20.0	8.0	37.4	0.55	0.00	0.58
MeOH	19.0	41.3	55.4	0.66	0.98	0.60
DMF	26.6	16.0	43.8	0.69	0.00	0.88
DMSO	29.8	19.3	45.1	0.76	0.00	1.00
Py	33.1	14.2	40.5	0.64	0.00	0.87