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All results from a given calculation for C4H7NO (Ethoxyacetonitrile)

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 CS 1A'
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-283.881076
Energy at 298.15K-283.888879
HF Energy-283.242087
Nuclear repulsion energy212.427787
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' 3114 2993 19.41      
2 A' 3045 2927 10.77      
3 A' 2994 2878 34.85      
4 A' 2989 2873 16.15      
5 A' 2300 2211 4.32      
6 A' 1607 1544 2.45      
7 A' 1587 1526 2.70      
8 A' 1579 1518 6.97      
9 A' 1475 1418 9.36      
10 A' 1469 1412 0.88      
11 A' 1400 1346 61.09      
12 A' 1162 1117 25.35      
13 A' 1093 1050 101.55      
14 A' 994 955 4.44      
15 A' 937 900 18.51      
16 A' 875 841 3.88      
17 A' 567 545 0.76      
18 A' 410 394 1.52      
19 A' 302 290 1.76      
20 A' 132 126 1.99      
21 A" 3123 3002 20.81      
22 A" 3019 2902 24.47      
23 A" 3017 2900 47.00      
24 A" 1563 1503 5.02      
25 A" 1331 1279 0.08      
26 A" 1281 1231 0.64      
27 A" 1208 1161 8.00      
28 A" 1075 1033 1.69      
29 A" 866 832 0.90      
30 A" 429 412 0.21      
31 A" 243 234 0.79      
32 A" 109 104 7.35      
33 A" 79 76 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 23686.6 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 22765.2 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
0.47374 0.04905 0.04561

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)
C1 -0.951 2.564 0.000
C2 -1.298 1.064 0.000
O3 0.000 0.358 0.000
C4 -0.193 -1.095 0.000
C5 1.155 -1.706 0.000
N6 2.223 -2.189 0.000
H7 -1.867 3.170 0.000
H8 -0.357 2.801 0.892
H9 -0.357 2.801 -0.892
H10 -1.882 0.790 -0.895
H11 -1.882 0.790 0.895
H12 -0.747 -1.431 -0.893
H13 -0.747 -1.431 0.893

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 N6 H7 H8 H9 H10 H11 H12 H13
C11.53972.40243.73724.76085.71511.09851.09701.09702.19422.19424.09884.0988
C21.53971.47722.42553.69934.79312.18192.16702.16701.10331.10332.70652.7065
O32.40241.47721.46602.36483.38033.37562.62502.62502.12832.12832.13462.1346
C43.73722.42551.46601.47922.65164.58244.00034.00032.68512.68511.10361.1036
C54.76083.69932.36481.47921.17245.73644.83644.83644.03144.03142.11912.1191
N65.71514.79313.38032.65161.17246.74145.68755.68755.15035.15033.19293.1929
H71.09852.18193.37564.58245.73646.74141.79191.79192.54272.54274.81904.8190
H81.09702.16702.62504.00034.83645.68751.79191.78333.09172.52334.60934.2497
H91.09702.16702.62504.00034.83645.68751.79191.78332.52333.09174.24974.6093
H102.19421.10332.12832.68514.03145.15032.54273.09172.52331.78972.49433.0690
H112.19421.10332.12832.68514.03145.15032.54272.52333.09171.78973.06902.4943
H124.09882.70652.13461.10362.11913.19294.81904.60934.24972.49433.06901.7864
H134.09882.70652.13461.10362.11913.19294.81904.24974.60933.06902.49431.7864

picture of Ethoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 105.540 C1 C2 H10 111.160
C1 C2 H11 111.160 C2 C1 H7 110.476
C2 C1 H8 109.393 C2 C1 H9 109.393
C2 O3 C4 110.995 O3 C2 H10 110.288
O3 C2 H11 110.288 O3 C4 C5 106.816
O3 C4 H12 111.563 O3 C4 H13 111.563
C4 C5 N6 179.950 C5 C4 H12 109.401
C5 C4 H13 109.401 H7 C1 H8 109.406
H7 C1 H9 109.406 H8 C1 H9 108.740
H10 C2 H11 108.403 H12 C4 H13 108.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability