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All results from a given calculation for C3H3N3O3 (cyanuric acid)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-501.511732
Energy at 298.15K-501.519352
HF Energy-500.559202
Nuclear repulsion energy440.726623
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1' 3575 3436 0.00      
2 A1' 1788 1718 0.00      
3 A1' 991 953 0.00      
4 A1' 648 623 0.00      
5 A2' 1439 1383 0.00      
6 A2' 1181 1135 0.00      
7 A2' 630 605 0.00      
8 A2" 845 812 458.51      
9 A2" 703 676 178.16      
10 A2" 163 157 1.83      
11 E' 3572 3433 118.49      
11 E' 3572 3433 118.49      
12 E' 1781 1712 695.13      
12 E' 1781 1712 695.13      
13 E' 1436 1380 0.01      
13 E' 1436 1380 0.01      
14 E' 1403 1348 415.33      
14 E' 1403 1348 415.34      
15 E' 1014 975 14.93      
15 E' 1014 975 14.93      
16 E' 513 493 25.10      
16 E' 513 493 25.10      
17 E' 389 374 24.07      
17 E' 389 374 24.08      
18 E" 780 749 0.00      
18 E" 780 749 0.00      
19 E" 672 646 0.00      
19 E" 672 646 0.00      
20 E" 159 152 0.00      
20 E" 159 152 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 17699.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 17010.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD/3-21G*
ABC
0.06527 0.06527 0.03263

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.259 0.727 0.000
C2 -1.259 0.727 0.000
C3 0.000 -1.454 0.000
N4 0.000 1.350 0.000
N5 -1.169 -0.675 0.000
N6 1.169 -0.675 0.000
O7 2.329 1.344 0.000
O8 -2.329 1.344 0.000
O9 0.000 -2.689 0.000
H10 0.000 2.367 0.000
H11 -2.050 -1.183 0.000
H12 2.050 -1.183 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 N5 N6 O7 O8 O9 H10 H11 H12
C12.51782.51781.40492.80401.40491.23533.64043.64042.06753.82052.0675
C22.51782.51781.40491.40492.80403.64041.23533.64042.06752.06753.8205
C32.51782.51782.80401.40491.40493.64043.64041.23533.82052.06752.0675
N41.40491.40492.80402.33902.33902.32872.32874.03941.01653.25913.2591
N52.80401.40491.40492.33902.33904.03942.32872.32873.25911.01653.2591
N61.40492.80401.40492.33902.33902.32874.03942.32873.25913.25911.0165
O71.23533.64043.64042.32874.03942.32874.65754.65752.54335.05592.5433
O83.64041.23533.64042.32872.32874.03944.65754.65752.54332.54335.0559
O93.64043.64041.23534.03942.32872.32874.65754.65755.05592.54332.5433
H102.06752.06753.82051.01653.25913.25912.54332.54335.05594.09954.0995
H113.82052.06752.06753.25911.01653.25915.05592.54332.54334.09954.0995
H122.06753.82052.06753.25913.25911.01652.54335.05592.54334.09954.0995

picture of cyanuric acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N4 C2 127.299 C1 N4 H10 116.351
C1 N6 C3 127.299 C1 N6 H12 116.351
C2 N4 H10 116.351 C2 N5 C3 127.299
C2 N5 H11 116.351 C3 N5 H11 116.351
C3 N6 H12 116.351 N4 C1 N6 112.701
N4 C1 O7 123.649 N4 C2 N5 112.701
N4 C2 O8 123.649 N5 C2 O8 123.649
N5 C3 N6 112.701 N5 C3 O9 123.649
N6 C1 O7 123.649 N6 C3 O9 123.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability