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 121.9 123.0 -1.1
HCOOH Formic acid 124.1 127.0 -2.9
CHONH2 formamide 122.5 123.6 -1.1
C2H4O Ethylene oxide 114.7 115.0 -0.3
HOCH2COOH Hydroxyacetic acid 110.6 111.3 -0.7
CH2CHCHO Acrolein 121.3 122.2 -0.9
CH2CHCHO Acrolein 120.2 122.2 -2.0
CH3CH2CHO Propanal 120.5 121.7 -1.2
C4H8O2 Ethyl acetate 108.3 109.4 -1.1
CH2O2 Dioxirane 115.8 116.0 -0.2
C3H3NO Oxazole 117.1 115.9 1.2
C3H3NO Oxazole 116.9 116.0 0.9
CH3OC2H5 Ethane, methoxy- 107.5 106.0 1.5
CH3OC2H5 Ethane, methoxy- 111.1 111.8 -0.7
CH3OC2H5 Ethane, methoxy- 110.3 110.6 -0.3
CH3ONO Methyl nitrite 101.8 103.7 -1.9
CH3ONO Methyl nitrite 110.0 110.9 -1.0
HFCO formyl fluoride 127.3 128.1 -0.8

MP4/3-21G for aHCO

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


Differences greater than 3 are in the 3 bin. Differences less than -3 are in the -3 bin.

histogram chart 10
histogram chart 8
histogram chart 6 histogram chart
histogram chart 4 histogram chart
histogram chart 2 histogram chart histogram chart
histogram chart 0 histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart
-3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3
Angle difference calc. - exp. (degrees)

  Species Name Difference (degrees)
Most negative difference HCOOH Formic acid -2.9
Most positive difference CH3OC2H5 Ethane, methoxy- 1.5