return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: QCISD/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-505.100825
Energy at 298.15K-505.108321
HF Energy-503.439803
Nuclear repulsion energy448.805398
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/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1' 3703 3508 0.00      
2 A1' 1897 1798 0.00      
3 A1' 1006 953 0.00      
4 A1' 680 644 0.00      
5 A2' 1397 1324 0.00      
6 A2' 1278 1211 0.00      
7 A2' 634 601 0.00      
8 A2" 780 739 85.05      
9 A2" 670 635 277.53      
10 A2" 121 115 0.87      
11 E' 3700 3505 163.98      
11 E' 3700 3505 163.98      
12 E' 1881 1782 903.76      
12 E' 1881 1782 903.79      
13 E' 1505 1426 354.58      
13 E' 1505 1426 354.64      
14 E' 1427 1352 40.39      
14 E' 1427 1352 40.42      
15 E' 1050 995 12.46      
15 E' 1050 995 12.47      
16 E' 521 493 22.98      
16 E' 521 493 22.99      
17 E' 396 376 27.95      
17 E' 396 376 27.89      
18 E" 780 739 0.00      
18 E" 780 739 0.00      
19 E" 599 568 0.00      
19 E" 599 568 0.00      
20 E" 148 140 0.00      
20 E" 148 140 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18091.5 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 17139.9 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/6-31G(2df,p)
ABC
0.06776 0.06776 0.03388

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.238 0.715 0.000
C2 -1.238 0.715 0.000
C3 0.000 -1.430 0.000
N4 0.000 1.333 0.000
N5 -1.155 -0.667 0.000
N6 1.155 -0.667 0.000
O7 2.280 1.317 0.000
O8 -2.280 1.317 0.000
O9 0.000 -2.633 0.000
H10 0.000 2.341 0.000
H11 -2.027 -1.170 0.000
H12 2.027 -1.170 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 N5 N6 O7 O8 O9 H10 H11 H12
C12.47682.47681.38422.76331.38421.20313.56973.56972.04373.77082.0437
C22.47682.47681.38421.38422.76333.56971.20313.56972.04372.04373.7708
C32.47682.47682.76331.38421.38423.56973.56971.20313.77082.04372.0437
N41.38421.38422.76332.30952.30952.28032.28033.96641.00743.22163.2216
N52.76331.38421.38422.30952.30953.96642.28032.28033.22161.00743.2216
N61.38422.76331.38422.30952.30952.28033.96642.28033.22163.22161.0074
O71.20313.56973.56972.28033.96642.28034.56064.56062.49984.97382.4998
O83.56971.20313.56972.28032.28033.96644.56064.56062.49982.49984.9738
O93.56973.56971.20313.96642.28032.28034.56064.56064.97382.49982.4998
H102.04372.04373.77081.00743.22163.22162.49982.49984.97384.05444.0544
H113.77082.04372.04373.22161.00743.22164.97382.49982.49984.05444.0544
H122.04373.77082.04373.22163.22161.00742.49984.97382.49984.05444.0544

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 126.929 C1 N4 H10 116.536
C1 N6 C3 126.929 C1 N6 H12 116.536
C2 N4 H10 116.536 C2 N5 C3 126.929
C2 N5 H11 116.536 C3 N5 H11 116.536
C3 N6 H12 116.536 N4 C1 N6 113.071
N4 C1 O7 123.464 N4 C2 N5 113.071
N4 C2 O8 123.464 N5 C2 O8 123.464
N5 C3 N6 113.071 N5 C3 O9 123.464
N6 C1 O7 123.464 N6 C3 O9 123.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability