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
CH3CSNH2 Ethanethioamide 124.0 122.0 2.0
CH3CSNH2 Ethanethioamide 114.4 119.1 -4.7
CH3NH2 methyl amine 111.0 112.0 -1.0
CH3CH2NH2 Ethylamine 111.1 111.4 -0.3
CHONH2 formamide 118.5 121.7 -3.2
CHONH2 formamide 120.0 119.3 0.7
HNCO Isocyanic acid 123.9 140.7 -16.8
C4H5N Pyrrole 125.1 125.2 -0.1
CHSNH2 thioformamide 117.9 121.8 -3.9
CHSNH2 thioformamide 120.4 119.3 1.1
CH3NHCH3 Dimethylamine 108.9 111.0 -2.1
HNCNH diiminomethane 118.6 126.7 -8.1
C2H5N Aziridine 109.3 108.9 0.4
CH2NH Methanimine 110.5 112.8 -2.3
HNCS Isothiocyanic acid 131.7 157.3 -25.6
HNC hydrogen isocyanide 180.0 180.0 0.0

B3LYP/3-21G* for aHNC

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


Differences greater than 30 are in the 30 bin. Differences less than -30 are in the -30 bin.

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

  Species Name Difference (degrees)
Most negative difference HNCS Isothiocyanic acid -25.6
Most positive difference CH3CSNH2 Ethanethioamide 2.0