TABLE 456.— ELECTRIC DIPOLE MOMENTS 



441 



The dipole moments are given in Debye units (1 Debye unit = 1 X 10~ 18 esu). The 

 moments listed were obtained from gaseous measurements. The data are taken from 

 Tables of Electric Dipole Moments, April 1947, compiled by L. G. Wesson, Laboratory for 

 Insulation Research, Massachusetts Inst. Techn., Cambridge, Mass. Where several sources 

 were given, a study was made to select the best value. Reference to original sources can be 

 made from the above tables. 



Part 1. — Inorganic substances 



Electric 



dipole 



moment 



1X10- 1 * 



Substance esu 



Ammonia 1 .46 



Argon 



Arsine 16 



Boron fluoride 



Deuterium chloride 1.089 



Helium 



Hydrogen 



Hydrogen fluoride 1.91 



Hydrogen iodide 38 



Krypton 



Neon 



Electric 



dipole 



moment 



1X10- 18 



Substance esu 



Nitric oxide 1 



Nitrogen 



Nitrogen dioxide 3 



Oxygen 



Phosphine 55 



Potassium chloride 6.3 



Silane, SiH 4 



Sodium iodide 4.9 



Sulfur dioxide 1.7 



Water 1.84 



Xenon 



Part 2. — Organic substances 



Electric 



dipole 



moment 



1X10-" 



Substance esu 



Phosgene CCUO 



(carbonyl chloride) 1.18 



Thiophosgene CCUS 28 



Carbon tetrachloride CCU 



Chloroform CHCU 1.02 



Hydrogen cyanide CHN 2.94 



Formaldehyde CH 2 2.27 



Formic acid CH2O2 1.51 



Methyl bromide CH 3 Br 1.79 



Methyl chloride CH 3 C1 1.86 



Methyl iodide CH 3 I 1.64 



Formamide CH 3 NO 3.22 



Nitromethane CH 3 N0 2 3.49 



Methane CH, 



Methyl alcohol CH«0 1.69 



Carbon monoxide CO 11 



Carbon dioxide CO2 



Carbon disulfide CS 2 



Acetylene GH 2 



Ethylene GH4 



Acetaldehyde GH,0 2.71 



Acetic acid GH«0 2 1.73 



Ethyl bromide GH 5 Br 1.96 



Electric 



dipole 



moment 



ixio-« 



Substance esu 



Ethyl chloride GH 5 C1 2.00 



Ethyl fluoride GH 6 F 1.92 



Ethyl iodide GHJ 1.87 



Nitroethane C2H,N0 2 3.70 



Ethane GH« 



Ethyl alcohol GH.O 1.68 



Methyl sulfone GH,0 2 S 4.41 



Dimethylamine GH 7 N 99 



Cyanogen GN 2 



Propene (propylene) GH 9 35 



Acetone GH a O 2.85 



Methyl acetate GH„0 2 1.67 



Ethyl ether GH 10 O 1.14 



Ethyl sulfide GH,„S 1.51 



Diethyl carbonate GH t o0 3 1.06 



Bromobenzene GH 5 Br 1.74 



Chlorobenzene GH 5 C1 1.69 



Fluorobenzene GH 5 F 1.57 



Nitrobenzene GH 5 N0 2 4.23 



Benzene GHe 



Phenol GH.0 1.40 



Aniline GH,N 1.48 



Toluene GH 8 37 



SMITHSONIAN PHYSICAL TABLES 



