Compound

ν_O-H

ν_C-H

ν_NH

ν_O-H of acid

ν (C=O)

ν (COO) asym

ν_M-O

ν_M-N

ν_S-O

Orotic acid

3517

3115

3015

2990

2835

1705

1665

-

-

-

-

[Fe₂ (H₂L)₂Cl₂(OH)₂(H₂O)₂]·2H₂O

3530

3100

3022

2837

-

1700

1660

-

444

549

-

[Co (H₂L)₂(H₃L)]·3H₂O

3448

3205

3125

3000

2809

1715

1644

1486

484

550

-

[Ni₂(H₂L)₂ (SO₄)]·5H₂O

3435

3292

2880

-

1700

1643

1476

519

556

627

[Cu₂ (H₂L)₂(SO₄)(H₂O)₂]

3408

3300

3100

-

1700

1628

-

550

560

612

[Zn (H₂L)₂ (H₂O)₂]·4H₂O

3477

3412

3221

3000

2822

-

1701

1672

1479

550

563

-

[Cd (H₂L)₂(H₂O)₂]·H₂O

3500

3156

3092

2825

-

1688

1618

1491

560

566

-

[Hg (H₃L)₂Cl₂(H₂O)₂]

3524

3168

3000

2990

2850

1702

1669

-

567

-

-

[Co₂Ni (HL)₂ (OH)₂(H₂O)₄]·H₂O

3414

3028

2835

-

1716

1651

1473

443

505

551

-

[Ni₂Cu (HL)₂ (OH)₂(H₂O)₄]·H₂O

3452

3120

2827

-

1712

1651

1477

455

555

559

-