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Table 3 Crystal data and refinement parameters for complexes 1-5

From: Supramolecular architectures and structural diversity in a series of lead (II) Chelates involving 5-Chloro/Bromo thiophene-2-carboxylate and N,N’-donor ligands

 

Complex 1

Complex 2

Complex 3

Complex4

Complex5

Empirical formula

C20H12N2O4Cl2S2Pb

C22H16Cl2N2O4S2Pb

C44H24Cl4N4O8S4Pb2

C22H16Br2N2O4PbS2

C38H26Br2N4O8Pb2S2

Formula weight

686.56

714.61

1421.15

803.51

1304.97

Temp, K

296

296

296

296

296

λ (Å)

0.71073

0.71073

0.71073

0.71073

0.71073

Crystal system

Triclinic

Triclinic

Triclinic

Triclinic

Monoclinic

Space group

P-1

P-1

P-1

P-1

P21/c

a (Å)

9.0760(1)

10.6261(3)

10.2998(1)

10.710(5)

8.918(5)

b (Å)

12.0102(2)

10.9835(2)

11.3830(1)

10.973(5)

23.841(5)

c (Å)

12.0754(2)

11.4710(2)

11.4287(1)

11.623(5)

12.744(5)

α(º)

116.441(1)

115.441(1)

100.292(1)

115.592(5)

90

β (º)

93.682(1)

98.773(1)

103.011(1)

98.676(5)

133.39(2)

γ (º)

106.176(1)

96.052(1)

115.391(1)

96.238(5)

90

V (Å3)

1104.46(3)

1172.71(5)

1120.29(2)

1194.5(9)

1969.0(16)

Z

2

2

1

2

2

ρ calcd (g/cm3)

2.065

2.024

2.106

2.234

2.201

μ (mm-1)

8.099

7.632

7.989

10.615

10.732

F(000)

652

684

676

756

1224

Crystal size (mm)

0.04 × 0.05 × 0.05

0.05 x 0.05 × 0.06

0.04 × 0.05 × 0.06

0.08 × 0.09 × 0.06

0.09 × 0.05 × 0.06

No of reflections collected

7170

8554

7529

8114

6592

Number restraints

0

0

0

0

0

Goodness-of-fit on F2

1.026

1.03

1.00

1.02

0.98

Final R1 index [I > 2σ(I)]

0.0239

0.0240

0.0303

0.0290

0.0309

wR2 (all data)

0.0541

0.0556

0.0635

0.0633

0.0690

Largest difference in peak and hole (e Å-3)

−0.61, 1.14

−0.63, 1.27

−0.45, 1.18

−1.08, 1.13

−1.05, 0.88

CCDC number

821366

821367

821365

920520

920521

  1. R1 = ∑(||Fo|-|Fc||)/∑| Fo |; wR2 = [∑w(|Fo|-|Fc|2)2]/∑w(|Fo|2)]1/2.