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All results from a given calculation for C4H4N2O2 (Uracil)

using model chemistry: MP2/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-414.104081
Energy at 298.15K-414.111080
HF Energy-412.636291
Nuclear repulsion energy357.099392
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/Def2TZVPP
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' 3671 3493 124.52      
2 A' 3618 3443 77.46      
3 A' 3292 3132 2.39      
4 A' 3249 3091 2.34      
5 A' 1818 1730 724.11      
6 A' 1781 1695 512.10      
7 A' 1684 1603 23.19      
8 A' 1512 1439 125.73      
9 A' 1428 1358 59.63      
10 A' 1414 1346 52.77      
11 A' 1392 1324 9.11      
12 A' 1248 1187 8.63      
13 A' 1214 1155 109.32      
14 A' 1096 1043 6.53      
15 A' 993 945 7.70      
16 A' 977 930 11.06      
17 A' 775 737 3.50      
18 A' 559 532 3.04      
19 A' 538 512 6.39      
20 A' 516 491 17.58      
21 A' 386 367 20.46      
22 A" 957 911 0.68      
23 A" 811 772 53.34      
24 A" 758 721 33.34      
25 A" 731 695 7.33      
26 A" 688 655 81.00      
27 A" 561 533 38.62      
28 A" 392 373 25.12      
29 A" 161 153 0.32      
30 A" 144 137 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 19181.3 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 18251.0 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/Def2TZVPP
ABC
0.13032 0.06740 0.04443

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.269 0.392 0.000
C2 1.237 -1.060 0.000
N3 0.000 0.982 0.000
C4 0.053 -1.704 0.000
O5 2.274 1.084 0.000
N6 -1.136 -1.023 0.000
C7 -1.227 0.357 0.000
O8 -2.291 0.948 0.000
H9 2.174 -1.588 0.000
H10 -0.031 1.993 0.000
H11 -0.027 -2.780 0.000
H12 -2.019 -1.506 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 O5 N6 C7 O8 H9 H10 H11 H12
C11.45191.39992.42281.22042.79052.49683.60352.17712.06233.42673.7963
C21.45192.38731.34722.38162.37302.84204.05901.07613.30502.13463.2858
N31.39992.38732.68692.27662.30481.37772.29143.36671.01063.76293.2042
C42.42281.34722.68693.56431.37072.42613.53972.12363.69741.07942.0817
O51.22042.38162.27663.56434.00883.57654.56762.67422.47814.49755.0138
N62.79052.37302.30481.37074.00881.38252.28433.35803.21152.07841.0061
C72.49682.84201.37772.42613.57651.38251.21713.91812.02673.35892.0236
O83.60354.05902.29143.53974.56762.28431.21715.13512.48984.36212.4688
H92.17711.07613.36672.12362.67423.35803.91815.13514.20532.50264.1935
H102.06233.30501.01063.69742.47813.21152.02672.48984.20534.77294.0236
H113.42672.13463.76291.07944.49752.07843.35894.36212.50264.77292.3650
H123.79633.28583.20422.08175.01381.00612.02362.46884.19354.02362.3650

picture of Uracil state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 119.854 C1 C2 H9 118.140
C1 N3 C7 128.028 C1 N3 H10 116.719
C2 C1 N3 113.667 C2 C1 O5 125.835
C2 C4 N6 121.642 C2 C4 H11 122.822
N3 C1 O5 120.497 N3 C7 N6 113.234
N3 C7 O8 123.915 C4 C2 H9 122.006
C4 N6 C7 123.574 C4 N6 H12 121.523
N6 C4 H11 115.537 N6 C7 O8 122.851
C7 N3 H10 115.252 C7 N6 H12 114.903
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability