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 119.2 120.2 -1.0
NH2CONH2 Urea 112.8 115.5 -2.7
CH3CSNH2 Ethanethioamide 124.0 121.9 2.1
CH3CSNH2 Ethanethioamide 114.4 119.1 -4.7
CH3NH2 methyl amine 111.0 111.1 -0.1
CH3CH2NH2 Ethylamine 111.1 110.5 0.6
CHONH2 formamide 118.5 121.6 -3.1
CHONH2 formamide 120.0 119.3 0.7
HNCO Isocyanic acid 123.9 136.3 -12.4
C4H5N Pyrrole 125.1 125.2 -0.1
CHSNH2 thioformamide 117.9 121.8 -3.9
CHSNH2 thioformamide 120.4 119.3 1.1
HNCNH diiminomethane 118.6 126.5 -7.9
CH2NH Methanimine 110.5 112.2 -1.7
HNCS Isothiocyanic acid 131.7 149.2 -17.5
HNC hydrogen isocyanide 180.0 180.0 0.0

MP2=FULL/3-21G* for aHNC

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


Differences greater than 6 are in the 6 bin. Differences less than -18 are in the -18 bin.

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

  Species Name Difference (degrees)
Most negative difference HNCS Isothiocyanic acid -17.5
Most positive difference CH3CSNH2 Ethanethioamide 2.1