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 C2H5NO3 (Nitric acid, ethyl ester)

using model chemistry: MP2=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2=FULL/cc-pVTZ
 hartrees
Energy at 0K-359.011534
Energy at 298.15K-359.019582
HF Energy-357.648543
Nuclear repulsion energy252.714328
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=FULL/cc-pVTZ
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' 3189 3028 9.81      
2 A' 3125 2967 9.95      
3 A' 3111 2954 9.14      
4 A' 1847 1754 254.59      
5 A' 1550 1472 4.02      
6 A' 1527 1450 5.06      
7 A' 1442 1369 0.99      
8 A' 1411 1339 13.09      
9 A' 1311 1245 245.33      
10 A' 1169 1110 19.90      
11 A' 1089 1034 71.62      
12 A' 956 907 63.13      
13 A' 880 835 264.01      
14 A' 735 698 20.64      
15 A' 587 557 0.24      
16 A' 387 368 0.15      
17 A' 234 222 0.55      
18 A" 3199 3037 16.69      
19 A" 3166 3005 5.85      
20 A" 1515 1438 7.14      
21 A" 1316 1250 0.84      
22 A" 1203 1142 3.64      
23 A" 841 799 0.13      
24 A" 795 755 10.91      
25 A" 279 265 0.49      
26 A" 134 127 1.12      
27 A" 106 100 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 18550.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 17611.9 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 MP2=FULL/cc-pVTZ
ABC
0.33555 0.07489 0.06265

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.095 -0.307 0.000
O2 0.000 0.568 0.000
O3 2.149 0.269 0.000
O4 0.857 -1.491 0.000
C5 -1.260 -0.115 0.000
C6 -2.298 0.973 0.000
H7 -1.333 -0.742 0.881
H8 -1.333 -0.742 -0.881
H9 -3.286 0.526 0.000
H10 -2.201 1.597 0.881
H11 -2.201 1.597 -0.881

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11
N11.40151.20131.20752.36303.62652.61862.61864.45953.90633.9063
O21.40152.16942.23001.43332.33372.06602.06603.28662.58392.5839
O31.20132.16942.18343.43074.50243.73083.73085.44114.63194.6319
O41.20752.23002.18342.52534.00332.47602.47604.60784.43354.4335
C52.36301.43333.43072.52531.50341.08411.08412.12462.14182.1418
C63.62652.33374.50244.00331.50342.15662.15661.08471.08351.0835
H72.61862.06603.73082.47601.08412.15661.76202.49012.49463.0540
H82.61862.06603.73082.47601.08412.15661.76202.49013.05402.4946
H94.45953.28665.44114.60782.12461.08472.49012.49011.76111.7611
H103.90632.58394.63194.43352.14181.08352.49463.05401.76111.7616
H113.90632.58394.63194.43352.14181.08353.05402.49461.76111.7616

picture of Nitric acid, ethyl ester state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 O2 C5 112.929 O2 N1 O3 112.692
O2 N1 O4 117.274 O2 C5 C6 105.224
O2 C5 H7 109.524 O2 C5 H8 109.524
O3 N1 O4 130.033 C5 C6 H9 109.288
C5 C6 H10 110.733 C5 C6 H11 110.733
C6 C5 H7 111.894 C6 C5 H8 111.894
H7 C5 H8 108.711 H9 C6 H10 108.632
H9 C6 H11 108.632 H10 C6 H11 108.771
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability