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All results from a given calculation for C4H4N2O2 (Uracil)

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-413.736039
Energy at 298.15K-413.742767
HF Energy-412.491378
Nuclear repulsion energy356.805037
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 MP3=FULL/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3769 3511 120.21      
2 A' 3725 3470 76.11      
3 A' 3353 3123 1.04      
4 A' 3317 3090 3.55      
5 A' 1878 1749 576.90      
6 A' 1861 1734 1029.53      
7 A' 1746 1627 41.52      
8 A' 1556 1449 140.09      
9 A' 1472 1371 114.72      
10 A' 1464 1364 23.13      
11 A' 1446 1347 18.89      
12 A' 1293 1205 25.86      
13 A' 1245 1160 117.55      
14 A' 1120 1043 12.62      
15 A' 1010 941 9.25      
16 A' 1004 935 9.21      
17 A' 793 739 4.12      
18 A' 574 534 5.11      
19 A' 555 517 4.11      
20 A' 529 492 21.89      
21 A' 396 369 25.57      
22 A" 943 879 6.98      
23 A" 781 727 40.31      
24 A" 732 682 37.32      
25 A" 672 626 1.80      
26 A" 648 603 135.74      
27 A" 512 477 35.98      
28 A" 331 308 45.12      
29 A" 135 126 2.56      
30 A" 75 70 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 19465.3 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 18133.9 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 MP3=FULL/6-31+G**
ABC
0.12960 0.06752 0.04439

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.274 0.397 0.000
C2 1.241 -1.070 0.000
N3 0.000 0.987 0.000
C4 0.056 -1.709 0.000
O5 2.277 1.082 0.000
N6 -1.143 -1.024 0.000
C7 -1.234 0.359 0.000
O8 -2.292 0.955 0.000
H9 2.179 -1.597 0.000
H10 -0.027 1.995 0.000
H11 -0.029 -2.785 0.000
H12 -2.021 -1.512 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 O5 N6 C7 O8 H9 H10 H11 H12
C11.46821.40392.43351.21442.80442.50803.60942.19052.06023.43843.8085
C21.46822.40301.34672.38892.38532.85824.07261.07533.31742.13343.2922
N31.40392.40302.69702.27892.31351.38442.29243.38041.00823.77203.2143
C42.43351.34672.69703.56741.38132.43743.55082.12583.70521.07882.0862
O51.21442.38892.27893.56744.01693.58444.57092.68162.47804.50215.0204
N62.80442.38532.31351.38134.01691.38602.28783.37133.21892.08401.0043
C72.50802.85821.38442.43743.58441.38601.21443.93352.03303.36682.0302
O83.60944.07262.29243.55084.57092.28781.21445.14792.49294.37102.4816
H92.19051.07533.38042.12582.68163.37133.93355.14794.21552.50634.2006
H102.06023.31741.00823.70522.47803.21892.03302.49294.21554.77974.0346
H113.43842.13343.77201.07884.50212.08403.36684.37102.50634.77972.3641
H123.80853.29223.21432.08625.02041.00432.03022.48164.20064.03462.3641

picture of Uracil state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 119.593 C1 C2 H9 118.078
C1 N3 C7 128.180 C1 N3 H10 116.365
C2 C1 N3 113.564 C2 C1 O5 125.602
C2 C4 N6 121.941 C2 C4 H11 122.807
N3 C1 O5 120.834 N3 C7 N6 113.249
N3 C7 O8 123.659 C4 C2 H9 122.330
C4 N6 C7 123.474 C4 N6 H12 121.171
N6 C4 H11 115.253 N6 C7 O8 123.092
C7 N3 H10 115.455 C7 N6 H12 115.355
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability