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 124.0 122.1 1.9
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 117.9 122.1 -4.2
CHSNH2 thioformamide 120.4 119.3 1.1
CH3NHCH3 Dimethylamine 108.9 109.9 -1.0
HNCNH diiminomethane 118.6 124.3 -5.6
C2H5N Aziridine 109.3 108.5 0.8
CH2NH Methanimine 110.5 112.6 -2.1
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 8 are in the 8 bin. Differences less than -16 are in the -16 bin.

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

  Species Name Difference (degrees)
Most negative difference HNCO Isocyanic acid -14.1
Most positive difference CH3CSNH2 Ethanethioamide 1.9