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 121.9 122.4 -0.5
HCOOH Formic acid 124.1 125.4 -1.3
C2H4O Ethylene oxide 114.7 115.5 -0.8
HOCH2COOH Hydroxyacetic acid 110.6 111.6 -1.0
CH2CHCHO Acrolein 121.3 121.6 -0.3
CH2CHCHO Acrolein 120.2 121.6 -1.4
C3H6O 2-Propen-1-ol 113.3 112.0 1.3
C3H6O 2-Propen-1-ol 107.3 110.8 -3.5
CH3OCH3 Dimethyl ether 107.1 107.5 -0.4
CH3OCH3 Dimethyl ether 111.0 111.8 -0.7
CH3CH2CHO Propanal 120.5 120.8 -0.3
C4H8O2 Ethyl acetate 108.3 109.2 -0.9
CH2O2 Dioxirane 115.8 116.5 -0.6
C3H3NO Oxazole 117.1 116.2 0.9
C3H3NO Oxazole 116.9 116.6 0.3
CH3OC2H5 Ethane, methoxy- 107.5 107.5 -0.1
CH3OC2H5 Ethane, methoxy- 111.1 111.8 -0.7
CH3OC2H5 Ethane, methoxy- 110.3 110.3 0.0
HFCO formyl fluoride 127.3 127.6 -0.3
CH3O Methoxy radical 111.3 105.3 6.0
HCO Formyl radical 119.5 124.4 -4.9

QCISD/cc-pVDZ for aHCO

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


Differences greater than 7 are in the 7 bin. Differences less than -5 are in the -5 bin.

histogram chart 10
histogram chart 8 histogram chart
histogram chart 6 histogram chart histogram chart
histogram chart 4 histogram chart histogram chart
histogram chart 2 histogram chart histogram chart
histogram chart 0 histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7
Angle difference calc. - exp. (degrees)

  Species Name Difference (degrees)
Most negative difference HCO Formyl radical -4.9
Most positive difference CH3O Methoxy radical 6.0