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/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-358.580838
Energy at 298.15K-358.588757
HF Energy-357.519459
Nuclear repulsion energy249.938518
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/6-31+G**
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' 3234 3038 11.50      
2 A' 3153 2962 11.07      
3 A' 3137 2946 11.70      
4 A' 1837 1726 243.32      
5 A' 1566 1471 3.63      
6 A' 1548 1453 5.77      
7 A' 1468 1379 5.84      
8 A' 1426 1340 3.45      
9 A' 1298 1220 266.59      
10 A' 1173 1101 14.64      
11 A' 1075 1009 67.60      
12 A' 950 892 70.64      
13 A' 862 809 274.53      
14 A' 717 673 14.21      
15 A' 568 534 0.40      
16 A' 382 359 0.14      
17 A' 230 216 0.60      
18 A" 3252 3054 18.52      
19 A" 3220 3024 6.64      
20 A" 1532 1439 7.81      
21 A" 1314 1234 0.61      
22 A" 1208 1135 4.06      
23 A" 848 797 0.13      
24 A" 745 699 8.13      
25 A" 263 247 0.50      
26 A" 121 114 1.61      
27 A" 100 94 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 18612.7 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 17481.0 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=FULL/6-31+G**
ABC
0.32632 0.07345 0.06133

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.100 -0.320 0.000
O2 0.000 0.569 0.000
O3 2.175 0.259 0.000
O4 0.855 -1.522 0.000
C5 -1.284 -0.105 0.000
C6 -2.304 1.009 0.000
H7 -1.357 -0.732 0.886
H8 -1.357 -0.732 -0.886
H9 -3.303 0.575 0.000
H10 -2.196 1.630 0.885
H11 -2.196 1.630 -0.885

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11
N11.41461.22081.22662.39443.65472.64412.64414.49323.93133.9313
O21.41462.19662.25901.45062.34592.07822.07823.30292.59492.5949
O31.22082.19662.21693.47834.54133.77343.77345.48664.66574.6657
O41.22662.25902.21692.56624.04802.51012.51014.65684.47574.4757
C52.39441.45063.47832.56621.51021.08811.08812.12992.15102.1510
C63.65472.34594.54134.04801.51022.17132.17131.08871.08681.0868
H72.64412.07823.77342.51011.08812.17131.77262.50652.50753.0699
H82.64412.07823.77342.51011.08812.17131.77262.50653.06992.5075
H94.49323.30295.48664.65682.12991.08872.50652.50651.76681.7668
H103.93132.59494.66574.47572.15101.08682.50753.06991.76681.7697
H113.93132.59494.66574.47572.15101.08683.06992.50751.76681.7697

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 113.371 O2 N1 O3 112.719
O2 N1 O4 117.412 O2 C5 C6 104.791
O2 C5 H7 109.057 O2 C5 H8 109.057
O3 N1 O4 129.869 C5 C6 H9 109.002
C5 C6 H10 110.781 C5 C6 H11 110.781
C6 C5 H7 112.352 C6 C5 H8 112.352
H7 C5 H8 109.079 H9 C6 H10 108.607
H9 C6 H11 108.607 H10 C6 H11 109.009
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability