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All results from a given calculation for C4H4N2O2 (Uracil)

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-413.864356
Energy at 298.15K 
HF Energy-412.601885
Nuclear repulsion energy356.397372
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 MP2/TZVP
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' 3670 3479 118.94      
2 A' 3622 3433 70.78      
3 A' 3298 3126 1.63      
4 A' 3258 3088 3.04      
5 A' 1825 1730 747.51      
6 A' 1785 1692 517.64      
7 A' 1688 1600 25.21      
8 A' 1515 1436 115.15      
9 A' 1431 1356 20.98      
10 A' 1419 1345 79.90      
11 A' 1402 1329 54.00      
12 A' 1246 1181 0.37      
13 A' 1214 1151 134.05      
14 A' 1098 1041 5.94      
15 A' 993 941 7.55      
16 A' 979 928 13.65      
17 A' 773 732 3.79      
18 A' 564 534 2.98      
19 A' 542 514 7.56      
20 A' 520 493 17.15      
21 A' 388 368 19.76      
22 A" 813 770 7.39      
23 A" 713 676 66.10      
24 A" 691 655 17.05      
25 A" 579 548 2.23      
26 A" 571 541 123.32      
27 A" 432 409 12.83      
28 A" 115 109 8.18      
29 A" 58i 55i 0.51      
30 A" 177i 168i 31.75      

Unscaled Zero Point Vibrational Energy (zpe) 18452.9 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 17491.5 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 MP2/TZVP
ABC
0.12985 0.06710 0.04424

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.268 0.389 0.000
C2 1.233 -1.061 0.000
N3 0.000 0.992 0.000
C4 0.053 -1.704 0.000
O5 2.287 1.068 0.000
N6 -1.140 -1.021 0.000
C7 -1.226 0.361 0.000
O8 -2.297 0.952 0.000
H9 2.176 -1.582 0.000
H10 -0.039 2.002 0.000
H11 -0.022 -2.783 0.000
H12 -2.026 -1.500 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 O5 N6 C7 O8 H9 H10 H11 H12
C11.45111.40392.42071.22482.79082.49413.60852.17052.07583.42493.7975
C21.45112.39571.34432.37612.37402.84144.06371.07703.31742.13123.2891
N31.40392.39572.69742.28852.31421.37912.29703.37101.01083.77573.2123
C42.42071.34432.69743.56091.37502.42973.54622.12693.70801.08142.0893
O51.22482.37612.28853.56094.01433.58394.58542.65252.50664.49105.0203
N62.79082.37402.31421.37504.01431.38522.28683.36363.21822.08661.0071
C72.49412.84141.37912.42973.58391.38521.22253.91822.02583.36702.0261
O83.60854.06372.29703.54624.58542.28681.22255.14062.49054.37282.4666
H92.17051.07703.37102.12692.65253.36363.91825.14064.21352.50554.2034
H102.07583.31741.01083.70802.50663.21822.02582.49054.21354.78574.0273
H113.42492.13123.77571.08144.49102.08663.36704.37282.50554.78572.3794
H123.79753.28913.21232.08935.02031.00712.02612.46664.20344.02732.3794

picture of Uracil state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 119.939 C1 C2 H9 117.544
C1 N3 C7 127.321 C1 N3 H10 117.636
C2 C1 N3 114.083 C2 C1 O5 125.019
C2 C4 N6 121.627 C2 C4 H11 122.580
N3 C1 O5 120.898 N3 C7 N6 113.683
N3 C7 O8 123.886 C4 C2 H9 122.517
C4 N6 C7 123.347 C4 N6 H12 121.817
N6 C4 H11 115.794 N6 C7 O8 122.432
C7 N3 H10 115.042 C7 N6 H12 114.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability