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

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Species Name Experimental Angle Calculated Angle Difference
H2NCH2COOH Glycine 125.0 125.8 -0.8
H2NCH2COOH Glycine 111.5 111.0 0.5
CH3CH(NH2)COOH Alanine 125.6 114.3 11.3
CH3CH(NH2)COOH Alanine 110.3 122.8 -12.5
C3H8O2 Propylene glycol 108.1 109.4 -1.3
C4H10O Ethoxy ethane 108.4 108.1 0.3
CH3CONH2 Acetamide 122.9 122.7 0.2
CH3CH2OH Ethanol 107.8 107.3 0.5
CH3COOH Acetic acid 126.6 126.3 0.3
CH3COOH Acetic acid 110.6 111.2 -0.6
CH3COCH3 Acetone 122.0 121.7 0.3
CH3CHO Acetaldehyde 123.9 124.4 -0.5
C2H4O Ethylene oxide 59.2 59.5 -0.3
CF3COOH trifluoroacetic acid 126.8 123.8 3.0
CF3COOH trifluoroacetic acid 111.1 109.3 1.8
CHOCH(CH3)CH3 Propanal, 2-methyl- 123.3 125.2 -1.9
HOCH2COOH Hydroxyacetic acid 112.6 112.1 0.5
HOCH2COOH Hydroxyacetic acid 124.2 123.8 0.4
HOCH2COOH Hydroxyacetic acid 111.3 111.2 0.1
ClCOClCO Oxalyl chloride 124.2 123.6 0.6
C3H5ClO Oxirane, (chloromethyl)- 114.0 114.1 -0.1
CH2CHCHO Acrolein 123.9 124.0 -0.1
CH2CHCHO Acrolein 124.3 124.0 0.3
C3H6O 2-Propen-1-ol 111.8 107.6 4.2
CH2ClCHO chloroacetaldehyde 123.3 121.8 1.5
C2H2O2 Ethanedial 121.2 121.1 0.1
C4H2O3 Maleic Anhydride 129.2 129.7 -0.5
C4H2O3 Maleic Anhydride 108.2 107.8 0.4
CH2C(CH3)OCH3 1-Propene, 2-methoxy- 125.8 117.9 7.9
CH3CH2CHO Propanal 124.4 124.5 -0.1
C4H8O2 Ethyl acetate 124.1 125.8 -1.7
C4H8O2 Ethyl acetate 111.9 110.7 1.2
C4H8O2 Ethyl acetate 108.2 106.8 1.4
C2H2O4 Oxalic Acid 123.1 121.3 1.8
C3H3NO Oxazole 108.1 108.1 0.0
C4H6O2 2,3-Butanedione 120.3 118.9 1.4
C3H8O2 1,3-Propanediol 108.0 113.0 -5.0
C3H8O2 1,3-Propanediol 112.0 107.8 4.2
C3O2 Carbon suboxide 179.2 180.0 -0.8
C4H8O2 1,3-Dioxane 109.2 110.0 -0.8
CH3OC2H5 Ethane, methoxy- 108.2 108.1 0.0
CH2CHOH ethenol 126.2 126.5 -0.3
CH3COF Acetyl fluoride 128.4 130.0 -1.6
C4H10O Propane, 2-methoxy- 113.7 112.3 1.4
C4H10O Propane, 2-methoxy- 107.7 112.3 -4.6
C3H2O3 vinylene carbonate 108.7 108.7 -0.1
C5H4O2 4-Cyclopentene-1,3-dione 124.9 126.8 -1.9
CH3CH2O Ethoxy radical 114.4 114.3 0.1
C3H4O Cyclopropanone 147.7 147.6 0.1

MP2=FULL/6-31+G** for aCCO

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


Differences greater than 10 are in the 10 bin. Differences less than -14 are in the -14 bin.

histogram chart 30
histogram chart 25 histogram chart
histogram chart 20 histogram chart
histogram chart 15 histogram chart
histogram chart 10 histogram chart
histogram chart 5 histogram chart histogram chart
histogram chart 0 histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart
-14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10
Angle difference calc. - exp. (degrees)

  Species Name Difference (degrees)
Most negative difference CH3CH(NH2)COOH Alanine -12.5
Most positive difference CH3CH(NH2)COOH Alanine 11.3