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: QCISD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-358.551706
Energy at 298.15K-358.559576
HF Energy-357.500681
Nuclear repulsion energy249.359989
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 QCISD(T)/6-31G*
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' 3149 3021        
2 A' 3087 2961        
3 A' 3069 2944        
4 A' 1716 1646        
5 A' 1561 1497        
6 A' 1539 1477        
7 A' 1464 1405        
8 A' 1419 1361        
9 A' 1320 1267        
10 A' 1165 1117        
11 A' 1066 1023        
12 A' 943 905        
13 A' 865 830        
14 A' 702 673        
15 A' 559 536        
16 A' 381 365        
17 A' 231 221        
18 A" 3164 3035        
19 A" 3138 3010        
20 A" 1528 1466        
21 A" 1305 1252        
22 A" 1205 1156        
23 A" 842 808        
24 A" 742 712        
25 A" 260 249        
26 A" 123 118        
27 A" 98 94        

Unscaled Zero Point Vibrational Energy (zpe) 18319.7 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 17574.1 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 QCISD(T)/6-31G*
ABC
0.32562 0.07306 0.06105

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.105 -0.316 0.000
O2 0.000 0.575 0.000
O3 2.175 0.264 0.000
O4 0.866 -1.519 0.000
C5 -1.285 -0.112 0.000
C6 -2.317 1.001 0.000
H7 -1.354 -0.747 0.891
H8 -1.354 -0.747 -0.891
H9 -3.323 0.562 0.000
H10 -2.209 1.630 0.891
H11 -2.209 1.630 -0.891

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11
N11.41971.21751.22642.39793.66672.65052.65054.51433.94513.9451
O21.41972.19742.26641.45702.35592.09192.09193.32332.60522.6052
O31.21752.19742.21213.48014.55243.77773.77775.50654.67804.6780
O41.22642.26642.21212.56964.05982.51372.51374.67764.49074.4907
C52.39791.45703.48012.56961.51851.09631.09632.14742.16442.1644
C63.66672.35594.55244.05981.51852.18562.18561.09761.09611.0961
H72.65052.09193.77772.51371.09632.18561.78282.52702.52583.0915
H82.65052.09193.77772.51371.09632.18561.78282.52703.09152.5258
H94.51433.32335.50654.67762.14741.09762.52702.52701.78201.7820
H103.94512.60524.67804.49072.16441.09612.52583.09151.78201.7824
H113.94512.60524.67804.49072.16441.09613.09152.52581.78201.7824

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 112.931 O2 N1 O3 112.641
O2 N1 O4 117.671 O2 C5 C6 104.687
O2 C5 H7 109.208 O2 C5 H8 109.208
O3 N1 O4 129.688 C5 C6 H9 109.281
C5 C6 H10 110.714 C5 C6 H11 110.714
C6 C5 H7 112.405 C6 C5 H8 112.405
H7 C5 H8 108.797 H9 C6 H10 108.645
H9 C6 H11 108.645 H10 C6 H11 108.789
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability