TABLE. Characteristics of styryl dyes 1 and 2 and their complexes with H+, Li+, Na+, Mg2+, and Ca2+ in MeCN.

Dye

Kabs,

M-1

Kfl,

M-1

labs,

nm

Dnabs,

cm-1

lfl,

nm

Dnfl,

cm-1

liso,

nm

e,

M-1cm-1

j

2

-

-

585

-

702

-

-

53690

0.013

2H+

16.2

-

406

7360

-

-

470

33880

<0.001

1

-

-

585

-

702

-

-

59250

0.049

1H+

151

-

408

7280

-

-

472

37380

<0.001

1Li+

91.7

73.5

543

1210

694

190

548

47850

0.095

1Na+

24.9

23.8

519

1970

699

30

535

41210

0.087

1Mg2+

89.5

50.0

435

5920

656

1010

492

43810

-

1Ca2+

188.5

123

450

5060

691

260

504

40770

0.079