return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Compare Angles

18 10 26 16 25

Click on entry for experimental details.
Species Name Experimental Angle Calculated Angle Difference
H2CO Formaldehyde 116.1 116.5 -0.3
CH4 Methane 109.5 109.5 -0.0
C2H6 Ethane 108.0 107.8 0.2
C2H4 Ethylene 117.6 116.8 0.8
C3H6 Cyclopropane 114.5 114.5 0.0
CH2O2 Dioxirane 117.3 116.6 0.7
CH3NC methyl isocyanide 109.4 109.7 -0.3
CH3 Methyl radical 120.0 120.0 -0.0
CH2 Methylene 135.5 132.6 2.9
CH2 Methylene 102.4 132.6 -30.2

QCISD(T)/6-31+G** for aHCH

Histogram of angle differences (in degrees) vs number of species


Differences greater than 25 are in the 25 bin. Differences less than -35 are in the -35 bin.

histogram chart 10
histogram chart 8
histogram chart 6 histogram chart
histogram chart 4 histogram chart
histogram chart 2 histogram chart
histogram chart 0 histogram chart histogram chart histogram chart
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25
Angle difference calc. - exp. (degrees)

  Species Name Difference (degrees)
Most negative difference CH2 Methylene -30.2
Most positive difference CH2 Methylene 2.9