Complex

UV bands

cm−1/nm

Band assignment

Ds

(cm−1)

Dt

(cm−1)

DqZ

(cm−1)

Dqxy

(cm−1)

10Dq

(cm−1)

K1

(cm−1)

µeff

(B.M)

D

(cm−1)

[Co2(TYS)2Cl2(H2O)4]

ν5

24,850

4A2g4Eg(c)

3458.6

177.14

782

1092

10920

1550

4.79

4.56

402.4

ν4

20,240

4A2g4B1g

494

ν3

10,870

4A2g4Eg(b)

920

ν2

9320

4A2g4B2g

1073

[Ni2(TYS)2Cl2(H2O)4]

ν4

24,000

3B1g4Eg(d)

13.28

116.57

858

1062

10620

1020

3.20

2.90

416.7

ν3

18,480

3B1g3A2g (c)

541.1

ν2

10,620

3B1g3B2g(b)

941.6

ν1

9600

3B1g3Eg(a)

1041.7

[Cr2(TYS)2Cl4(H2O)2]

ν4

28,110

4B1g4Egb

3243

386

1517

2193

21930

3380

3.74

5.94

356

ν3

24,570

4B1g4A2ga

407

ν2

21,930

4B1g4B2g

456

ν1

18,550

4B1g4Ega

539

[Cu2(TYS)2Cl2(H2O)4]

ν3

17,200

2B1g2Eg

1510

2232

1610

2296

16100

19530

2.17

23.00

581

ν2

16,100

2B1g2B2g

621

ν1

9770

2B1g2A1g

1024

[Fe2(TYS)2Cl4(H2O)2]

ν4

27,400

6A1g4T1g (4P)

-

-

-

-

-

-

5.60

-

364

ν3

26,100

6A1g4Eg (4D)

383

ν2

24,150

6A1g4T2g or 4A1g or 4Eg (4G)

414

ν1

17,520

6A1g4T1g (4G)

571

[Mn2(TYS)2Cl2(H2O)4]

ν4

27,610

6A1g4T1g (4P)

-

-

-

-

-

-

5.75

-

362

ν3

26,380

6A1g4Eg (4D)

379

ν2

24,410

6A1g4T2g or 4A1g or 4Eg (4G)

410

ν1

18,060

6A1g4T1g (4G)

554