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
NH2CONH2 Urea 119.2 124.0 -4.8
NH2CONH2 Urea 112.8 117.0 -4.2
C6H5NH2 aniline 114.9 120.8 -5.9
CH3CSNH2 Ethanethioamide 124.0 121.9 2.1
CH3CSNH2 Ethanethioamide 114.4 119.1 -4.7
CH3NH2 methyl amine 111.0 112.4 -1.4
CH3CH2NH2 Ethylamine 111.1 111.8 -0.7
CHONH2 formamide 118.5 121.8 -3.3
CHONH2 formamide 120.0 119.3 0.7
HNCO Isocyanic acid 123.9 144.2 -20.3
C4H5N Pyrrole 125.1 125.2 -0.1
CHSNH2 thioformamide 117.9 121.9 -4.0
CHSNH2 thioformamide 120.4 119.3 1.1
CH3NHCH3 Dimethylamine 108.9 111.4 -2.5
HNCNH diiminomethane 118.6 127.9 -9.3
C2H5N Aziridine 109.3 109.5 -0.2
CH2NH Methanimine 110.5 112.9 -2.4
HNC hydrogen isocyanide 180.0 180.0 0.0

mPW1PW91/3-21G for aHNC

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


Differences greater than 2 are in the 2 bin. Differences less than -22 are in the -22 bin.

histogram chart 10
histogram chart 8
histogram chart 6
histogram chart 4 histogram chart
histogram chart 2 histogram chart histogram chart histogram chart
histogram chart 0 histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart histogram chart
-22 -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 2
Angle difference calc. - exp. (degrees)

  Species Name Difference (degrees)
Most negative difference HNCO Isocyanic acid -20.3
Most positive difference CH3CSNH2 Ethanethioamide 2.1