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 121.9 122.2 -0.3
HCOOH Formic acid 124.1 125.3 -1.2
C2H4O Ethylene oxide 114.7 115.2 -0.5
CH2CHCHO Acrolein 121.3 121.3 -0.0
CH2CHCHO Acrolein 120.2 121.3 -1.1
CH3CH2CHO Propanal 120.5 120.6 -0.1
HCO Formyl radical 119.5 124.3 -4.8

CCSD(T)/6-31G(2df,p) for aHCO

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


Differences greater than 1 are in the 1 bin. Differences less than -5 are in the -5 bin.

histogram chart 10
histogram chart 8
histogram chart 6
histogram chart 4
histogram chart 2
histogram chart 0 histogram chart histogram chart histogram chart histogram chart
-5 -4.5 -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1
Angle difference calc. - exp. (degrees)

  Species Name Difference (degrees)
Most negative difference HCO Formyl radical -4.8
Most positive difference CH2CHCHO Acrolein -0.0