chapter  4
Polymers Physical Properties
Pages 100

At. No. Sym. Bond Length (Å) Bond Type

1 Hydrogen 1 H 1.056 ±1.115 2 Beryllium 4 Be 1.93

6 Chromium 24 Cr 1.92 ±0.04 Molybdenum 42 Mo 2.08 ±0.04 Tungsten 74 W 2.06 ±0.01

8 Iron 26 Fe 1.94 ±0.02 9 Cobalt 27 Co 1.93 ±0.02 10 Nickel 28 Ni 1.82 ±0.03

Palladium 46 Pd 2.27 ±0.04 12 Mercury 80 Hg 2.07 ±0.01

13 Aluminum 13 Al 2.24 ±0.04 Boron 5 B 1.56 ±0.01 Indium 49 In 2.16 ±0.04

14 Carbon 6 C 1.20 ±1.54 Alkyls (CH3XH3) Germanium 32 Ge 1.98 ±0.03 Alkyls (CH3XH3) Lead 82 Pb 2.29 ±0.05 Alkyls (CH3XH3) Silicon 14 Si 1.865 ±0.008 Alkyls (CH3XH3)

1.84 ±0.01 Aryls (C6H5XH3) 1.88 ±0.01 Neg. Subst. (CH3XCI3)

Tin 50 Sn 2.143 ±0.008 Alkyls (CH3XH3) 2.18 ±0.02 Neg. Subst. (CH3XCI3)

(Continued)

IA VIIA H 1.06 IIA IIIA IVA VA VIA VIIA

Be B C N O F 1.93 1.56 1.2 1.47 1.43 1.55

Al Si P S Cl IIIB IVB VB VIB VIIB ----- VIII ----- IB IIB 2.24 1.8 1.87 1.81 1.7

Cr Fe Co Ni Ge As Se Br 1.92 1.94 1.93 18.2 1.98 1.98 1.98 1.9 Mo Pd In Sn Sb Te I 2.08 2.27 2.16 2.15 2.16 2.05 2.1 W Hg Pb Bi 2.06 2.07 2.29 2.30

No. Element

No. Sym. Bond Length (Å) Bond Type

15 Arsenic 33 As 1.98 ±0.02 Paraffinic (CH3)3X Bismuth 83 Bi 2.30 Paraffinic (CH3)3X Nitrogen 7 N 1.47 ±1.1 Phosphorus 15 P 1.87 ±0.02 Paraffinic (CH3)3X Antimony 51 Sb 2.202 ±0.016 Paraffinic (CH3)3X

16 Oxygen 8 O 1.43 ±1.15 Sulfur 16 S 1.81 ±1.55 Selenium 34 Se 1.98 ±1.71 Tellurium 52 Te 2.05 ±0.14

17 Bromine 35 Br 1.937 ±0.003 Paraffinic (monosubstituted) (CH3X) Br 1.937 ±0.003 Paraffinic (disubstituted) (CH2X2) Br 1.89 ±0.01 Olefinic (CH2:CHX)

1.85 ±0.01 Aromatic (C6H3X) 1.79 ±0.01 Acetylenic (HC:CX)

Chlorine 17 Cl 1.767 ±0.002 Paraffinic (monosubstituted) (CH3X) Cl 1.767 ±0.002 Paraffinic (disubstituted) (CH2X2) Cl 1.72 ±0.01 Olefinic (CH2:CHX)

1.70 ±0.01 Aromatic (C6H3X) 1.79 ±0.01 Acetylenic (HC:CX)

Fluorine 9 F 1.831 ±0.005 Paraffinic (monosubstituted) (CH3X) F 1.334 ±0.004 Paraffinic (disubstituted) (CH2X2) F 1.325 ±0.1 Olefinic (CH2:CHX)

1.30 ±0.01 Aromatic (C6H3X) 1.635 ±0.004 Acetylenic (HC:CX)

Iodine 53 I 2.13 ±0.1 Paraffinic (monosubstituted) (CH3X) I 2.13 ±0.1 Paraffinic (disubstituted) (CH2X2) I 2.092 ±0.005 Olefinic (CH2:CHX)

2.05 ±0.01 Aromatic (C6H3X) 1.99 ±0.02 Acetylenic (HC:CX)

Source: Data from D. R. Lide (Ed.), CRC Handbook of Chemistry and Physics, CRC Press, Boca Raton, 1990; L. E. Sutton (Ed.), Tables of Interatomic Distances and Configuration in Molecules and Ions, Spec. Publ. No. 11, Chemical Society, London, 1958.