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All results from a given calculation for C4H4N2O2 (Uracil)

using model chemistry: TPSSh/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-414.829656
Energy at 298.15K-414.836585
HF Energy-414.829656
Nuclear repulsion energy355.171026
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 TPSSh/6-31G*
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' 3625 3478 86.76      
2 A' 3586 3441 53.11      
3 A' 3272 3139 0.39      
4 A' 3232 3101 6.01      
5 A' 1834 1760 568.44      
6 A' 1793 1720 536.38      
7 A' 1684 1615 57.27      
8 A' 1509 1448 83.68      
9 A' 1428 1370 5.12      
10 A' 1408 1350 99.66      
11 A' 1387 1331 41.62      
12 A' 1238 1188 9.42      
13 A' 1198 1149 83.19      
14 A' 1093 1048 6.45      
15 A' 987 947 5.41      
16 A' 965 926 6.96      
17 A' 769 738 1.90      
18 A' 550 527 4.62      
19 A' 531 509 4.74      
20 A' 509 488 18.45      
21 A' 377 361 20.50      
22 A" 963 924 0.34      
23 A" 809 776 63.55      
24 A" 740 710 67.12      
25 A" 726 696 12.12      
26 A" 694 665 74.92      
27 A" 567 544 48.87      
28 A" 389 374 26.53      
29 A" 169 162 0.47      
30 A" 147 141 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 19087.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 18312.9 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 TPSSh/6-31G*
ABC
0.12908 0.06659 0.04393

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.285 0.398 0.000
C2 1.244 -1.069 0.000
N3 0.000 0.986 0.000
C4 0.054 -1.712 0.000
O5 2.292 1.087 0.000
N6 -1.144 -1.028 0.000
C7 -1.243 0.363 0.000
O8 -2.309 0.954 0.000
H9 2.185 -1.600 0.000
H10 -0.026 2.000 0.000
H11 -0.035 -2.794 0.000
H12 -2.027 -1.521 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 O5 N6 C7 O8 H9 H10 H11 H12
C11.46801.41292.44321.21992.81652.52813.63652.19182.06983.45433.8276
C21.46802.40171.35202.39742.38762.86944.08801.08113.32132.14693.3012
N31.41292.40172.69842.29452.31541.38982.30903.38541.01483.77953.2232
C42.44321.35202.69843.58371.37972.44753.56272.13403.71321.08522.0897
O51.21992.39742.29453.58374.03443.60834.60292.68892.49154.52495.0450
N62.81652.38762.31541.37974.03441.39462.29883.37783.22752.08511.0113
C72.52812.86941.38982.44753.60831.39461.21873.95052.03963.38022.0407
O83.63654.08802.30903.56274.60292.29881.21875.16912.51124.38342.4907
H92.19181.08113.38542.13402.68893.37783.95055.16914.22492.52104.2127
H102.06983.32131.01483.71322.49153.22752.03962.51124.22494.79384.0496
H113.45432.14693.77951.08524.52492.08513.38024.38342.52104.79382.3636
H123.82763.30123.22322.08975.04501.01132.04072.49074.21274.04962.3636

picture of Uracil state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 120.025 C1 C2 H9 117.789
C1 N3 C7 128.845 C1 N3 H10 116.019
C2 C1 N3 112.938 C2 C1 O5 125.974
C2 C4 N6 121.852 C2 C4 H11 123.129
N3 C1 O5 121.089 N3 C7 N6 112.521
N3 C7 O8 124.416 C4 C2 H9 122.186
C4 N6 C7 123.820 C4 N6 H12 121.077
N6 C4 H11 115.018 N6 C7 O8 123.064
C7 N3 H10 115.136 C7 N6 H12 115.103
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.655      
2 C -0.295      
3 N -0.730      
4 C 0.106      
5 O -0.509      
6 N -0.674      
7 C 0.808      
8 O -0.507      
9 H 0.196      
10 H 0.372      
11 H 0.205      
12 H 0.372      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.191 -4.101 0.000 4.271
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.020 0.414 0.000
y 0.414 9.505 0.000
z 0.000 0.000 3.524


<r2> (average value of r2) Å2
<r2> 233.352
(<r2>)1/2 15.276