Compound

CH alphatic

CH aromatic

C=O

C=N

C-N

C=C

OH

L1

3400

3068

-

1616

1598

1425

1558

Cu(L1)2

3275

3115

2922

1598

1543

1357

1467

Co(L1)2

3307

-

-

1597

1541

1300

1448

L2

3500

3055

2995

1622

1678

1365

1463

Cu(L2)2

3392

3066

2879

1614

1560

1305

1469

Co(L2)2

3396

3070

2881

1614

1598

1390

1477

L3

3450

3074

2879

1680

1570

1431

1570

Cu(L3)2

3400

3018

2885

1614

1589

1398

1442

Co(L3)2

3433

-

2881

1602

1556

1409

1436