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 119.2 120.1 -0.9
NH2CONH2 Urea 112.8 115.5 -2.7
CH3CSNH2 Ethanethioamide 124.0 122.0 2.0
CH3CSNH2 Ethanethioamide 114.4 119.2 -4.8
CH3NH2 methyl amine 111.0 110.6 0.4
CH3CH2NH2 Ethylamine 111.1 110.2 0.9
CHONH2 formamide 118.5 121.7 -3.2
CHONH2 formamide 120.0 119.3 0.7
HNCO Isocyanic acid 123.9 138.0 -14.1
C4H5N Pyrrole 125.1 125.4 -0.3
CHSNH2 thioformamide 117.9 121.9 -4.0
CHSNH2 thioformamide 120.4 119.3 1.1
HNCNH diiminomethane 118.6 124.3 -5.6
CH2NH Methanimine 110.5 112.6 -2.1
HNCS Isothiocyanic acid 131.7 162.6 -30.9
HNC hydrogen isocyanide 180.0 180.0 0.0

QCISD/3-21G* for aHNC

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


Differences greater than 25 are in the 25 bin. Differences less than -35 are in the -35 bin.

histogram chart 10
histogram chart 8
histogram chart 6 histogram chart
histogram chart 4 histogram chart histogram chart
histogram chart 2 histogram chart histogram chart
histogram chart 0 histogram chart histogram chart histogram chart histogram chart
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25
Angle difference calc. - exp. (degrees)

  Species Name Difference (degrees)
Most negative difference HNCS Isothiocyanic acid -30.9
Most positive difference CH3CSNH2 Ethanethioamide 2.0