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All results from a given calculation for C2H5NO3 (Nitric acid, ethyl ester)

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-356.200428
Energy at 298.15K-356.208070
HF Energy-355.463155
Nuclear repulsion energy242.073237
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/3-21G
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' 3116 3020 15.45      
2 A' 3084 2989 3.97      
3 A' 3048 2954 9.53      
4 A' 1593 1544 6.94      
5 A' 1578 1530 6.60      
6 A' 1481 1435 7.88      
7 A' 1410 1366 5.61      
8 A' 1301 1261 200.27      
9 A' 1148 1113 2.54      
10 A' 1081 1048 194.19      
11 A' 1001 970 54.04      
12 A' 908 880 36.18      
13 A' 792 768 65.06      
14 A' 643 623 2.25      
15 A' 492 477 2.18      
16 A' 364 353 3.92      
17 A' 222 215 0.35      
18 A" 3141 3044 31.08      
19 A" 3117 3021 0.20      
20 A" 1566 1518 6.23      
21 A" 1317 1277 0.11      
22 A" 1199 1162 4.46      
23 A" 867 840 0.83      
24 A" 637 617 15.18      
25 A" 249 241 0.57      
26 A" 115 111 2.06      
27 A" 95 92 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 17781.6 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 17234.0 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 QCISD/3-21G
ABC
0.30527 0.06955 0.05790

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.133 -0.338 0.000
O2 0.000 0.648 0.000
O3 2.272 0.209 0.000
O4 0.811 -1.578 0.000
C5 -1.308 -0.091 0.000
C6 -2.359 1.034 0.000
H7 -1.371 -0.721 0.893
H8 -1.371 -0.721 -0.893
H9 -3.366 0.595 0.000
H10 -2.241 1.660 0.892
H11 -2.241 1.660 -0.892

Atom - Atom Distances (Å)
  N1 O2 O3 O4 C5 C6 H7 H8 H9 H10 H11
N11.50181.26371.28172.45323.75162.68572.68574.59434.02104.0210
O21.50182.31402.36971.50222.39042.13322.13323.36642.61562.6156
O31.26372.31402.30873.59244.70393.86433.86435.65104.82354.8235
O41.28172.36972.30872.58914.10772.50872.50874.70824.53854.5385
C52.45321.50223.59242.58911.53921.09461.09462.16902.17532.1753
C63.75162.39044.70394.10771.53922.20272.20271.09851.09681.0968
H72.68572.13323.86432.50871.09462.20271.78552.55072.53483.1003
H82.68572.13323.86432.50871.09462.20271.78552.55073.10032.5348
H94.59433.36645.65104.70822.16901.09852.55072.55071.78851.7885
H104.02102.61564.82354.53852.17531.09682.53483.10031.78851.7850
H114.02102.61564.82354.53852.17531.09683.10032.53481.78851.7850

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 109.503 O2 N1 O3 113.314
O2 N1 O4 116.494 O2 C5 C6 103.612
O2 C5 H7 109.470 O2 C5 H8 109.470
O3 N1 O4 130.192 C5 C6 H9 109.494
C5 C6 H10 110.088 C5 C6 H11 110.088
C6 C5 H7 112.408 C6 C5 H8 112.408
H7 C5 H8 109.298 H9 C6 H10 109.112
H9 C6 H11 109.112 H10 C6 H11 108.924
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability