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: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-356.066493
Energy at 298.15K-356.074398
HF Energy-355.472956
Nuclear repulsion energy246.555093
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 CID/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3229 3005 13.78      
2 A' 3205 2982 2.24      
3 A' 3159 2940 7.90      
4 A' 1643 1528 6.85      
5 A' 1625 1512 5.59      
6 A' 1534 1427 10.28      
7 A' 1506 1401 243.06      
8 A' 1473 1371 25.29      
9 A' 1207 1123 107.27      
10 A' 1191 1108 162.22      
11 A' 1055 982 86.12      
12 A' 977 910 45.16      
13 A' 888 826 44.73      
14 A' 706 657 1.82      
15 A' 544 506 5.33      
16 A' 388 361 7.03      
17 A' 232 216 0.33      
18 A" 3265 3038 22.96      
19 A" 3234 3010 1.90      
20 A" 1612 1500 7.32      
21 A" 1368 1273 0.01      
22 A" 1247 1161 6.43      
23 A" 895 832 0.77      
24 A" 713 663 23.79      
25 A" 256 238 0.64      
26 A" 120 111 2.37      
27 A" 101 94 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18686.6 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 17387.8 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 CID/3-21G*
ABC
0.31844 0.07168 0.05982

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.115 -0.308 0.000
O2 0.000 0.603 0.000
O3 2.221 0.252 0.000
O4 0.845 -1.531 0.000
C5 -1.298 -0.120 0.000
C6 -2.340 0.996 0.000
H7 -1.357 -0.744 0.885
H8 -1.357 -0.744 -0.885
H9 -3.339 0.560 0.000
H10 -2.224 1.618 0.885
H11 -2.224 1.618 -0.885

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11
N11.44011.23951.25262.41983.69352.66122.66124.53773.95543.9554
O21.44012.24832.29591.48542.37332.10712.10713.33932.60032.6003
O31.23952.24832.25223.53784.62153.81743.81745.56824.73384.7338
O41.25262.29592.25222.56584.06662.50012.50014.67754.48614.4861
C52.41981.48543.53782.56581.52761.08501.08502.15162.15942.1594
C63.69352.37334.62154.06661.52762.18662.18661.08981.08801.0880
H72.66122.10713.81742.50011.08502.18661.77052.53252.51683.0771
H82.66122.10713.81742.50011.08502.18661.77052.53253.07712.5168
H94.53773.33935.56824.67752.15161.08982.53252.53251.77381.7738
H103.95542.60034.73384.48612.15941.08802.51683.07711.77381.7703
H113.95542.60034.73384.48612.15941.08803.07712.51681.77381.7703

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 111.600 O2 N1 O3 113.868
O2 N1 O4 116.828 O2 C5 C6 103.929
O2 C5 H7 109.131 O2 C5 H8 109.131
O3 N1 O4 129.303 C5 C6 H9 109.437
C5 C6 H10 110.166 C5 C6 H11 110.166
C6 C5 H7 112.543 C6 C5 H8 112.543
H7 C5 H8 109.360 H9 C6 H10 109.075
H9 C6 H11 109.075 H10 C6 H11 108.896
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability