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: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-358.693092
Energy at 298.15K-358.701076
HF Energy-357.599656
Nuclear repulsion energy251.172766
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 MP2/6-311G**
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' 3185 3027 13.53      
2 A' 3105 2950 12.41      
3 A' 3093 2939 11.27      
4 A' 1872 1779 220.99      
5 A' 1549 1472 3.13      
6 A' 1522 1446 4.51      
7 A' 1448 1376 1.35      
8 A' 1413 1343 11.90      
9 A' 1315 1250 253.80      
10 A' 1170 1112 22.97      
11 A' 1084 1030 65.75      
12 A' 954 906 54.20      
13 A' 878 834 280.79      
14 A' 732 696 28.82      
15 A' 583 554 0.27      
16 A' 386 367 0.10      
17 A' 233 222 0.44      
18 A" 3198 3038 21.94      
19 A" 3162 3005 10.35      
20 A" 1503 1428 6.87      
21 A" 1319 1253 1.00      
22 A" 1205 1145 4.50      
23 A" 843 801 0.03      
24 A" 766 728 11.66      
25 A" 263 250 0.56      
26 A" 125 119 1.34      
27 A" 101 96 0.18      

Unscaled Zero Point Vibrational Energy (zpe) 18504.1 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 17582.6 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 MP2/6-311G**
ABC
0.33143 0.07390 0.06183

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.101 -0.320 0.000
O2 0.000 0.566 0.000
O3 2.158 0.260 0.000
O4 0.861 -1.508 0.000
C5 -1.271 -0.107 0.000
C6 -2.305 1.001 0.000
H7 -1.352 -0.739 0.888
H8 -1.352 -0.739 -0.888
H9 -3.306 0.560 0.000
H10 -2.198 1.626 0.888
H11 -2.198 1.626 -0.888

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11
N11.41351.20561.21192.38173.65342.64222.64224.49373.93213.9321
O21.41352.18002.24591.43842.34582.07862.07863.30562.59692.5969
O31.20562.18002.19233.44894.52473.75593.75595.47214.65134.6513
O41.21192.24592.19232.55134.03982.50542.50544.65164.46894.4689
C52.38171.43843.44892.55131.51551.09301.09302.14102.15702.1570
C63.65342.34584.52474.03981.51552.17362.17361.09321.09161.0916
H72.64222.07863.75592.50541.09302.17361.77622.50862.51233.0767
H82.64222.07863.75592.50541.09302.17361.77622.50863.07672.5123
H94.49373.30565.47214.65162.14101.09322.50862.50861.77571.7757
H103.93212.59694.65134.46892.15701.09162.51233.07671.77571.7762
H113.93212.59694.65134.46892.15701.09163.07672.51231.77571.7762

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 113.254 O2 N1 O3 112.438
O2 N1 O4 117.414 O2 C5 C6 105.119
O2 C5 H7 109.634 O2 C5 H8 109.634
O3 N1 O4 130.148 C5 C6 H9 109.244
C5 C6 H10 110.603 C5 C6 H11 110.603
C6 C5 H7 111.855 C6 C5 H8 111.855
H7 C5 H8 108.681 H9 C6 H10 108.728
H9 C6 H11 108.728 H10 C6 H11 108.891
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability