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 119.2 119.5 -0.3
NH2CONH2 Urea 112.8 115.1 -2.3
CH3NH2 methyl amine 111.0 110.4 0.6
CHONH2 formamide 118.5 121.7 -3.2
CHONH2 formamide 120.0 119.4 0.6
CHSNH2 thioformamide 117.9 121.9 -4.0
CHSNH2 thioformamide 120.4 119.3 1.1
HNCNH diiminomethane 118.6 125.3 -6.7
CH2NH Methanimine 110.5 112.2 -1.7
HNCS Isothiocyanic acid 131.7 148.7 -17.0

MP4=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 0 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 -17.0
Most positive difference CHSNH2 thioformamide 1.1