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 C4H7NO (Ethoxyacetonitrile)

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-285.750608
Energy at 298.15K-285.758293
HF Energy-284.844608
Nuclear repulsion energy215.404625
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 MP2/6-31+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' 3228 3036 17.08      
2 A' 3131 2945 14.10      
3 A' 3077 2894 47.74      
4 A' 3071 2889 31.16      
5 A' 2212 2081 7.58      
6 A' 1572 1479 1.76      
7 A' 1547 1455 0.22      
8 A' 1545 1454 5.89      
9 A' 1478 1390 12.16      
10 A' 1443 1357 8.08      
11 A' 1407 1323 64.48      
12 A' 1176 1106 72.30      
13 A' 1168 1099 129.74      
14 A' 1068 1005 22.66      
15 A' 971 913 9.03      
16 A' 915 860 8.68      
17 A' 540 508 0.45      
18 A' 424 399 1.02      
19 A' 291 274 1.74      
20 A' 128 121 3.05      
21 A" 3242 3049 17.16      
22 A" 3128 2942 0.02      
23 A" 3121 2936 61.19      
24 A" 1528 1437 7.08      
25 A" 1320 1241 2.41      
26 A" 1269 1194 3.57      
27 A" 1209 1137 6.66      
28 A" 1048 986 2.48      
29 A" 843 793 0.22      
30 A" 321 302 0.87      
31 A" 256 241 0.36      
32 A" 105 98 7.66      
33 A" 65 61 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 23922.8 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 22501.8 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 MP2/6-31+G**
ABC
0.51399 0.04972 0.04653

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.984 2.524 0.000
C2 -1.263 1.040 0.000
O3 0.000 0.363 0.000
C4 -0.173 -1.043 0.000
C5 1.155 -1.669 0.000
N6 2.208 -2.205 0.000
H7 -1.922 3.079 0.000
H8 -0.414 2.800 0.885
H9 -0.414 2.800 -0.885
H10 -1.834 0.744 -0.888
H11 -1.834 0.744 0.888
H12 -0.723 -1.376 -0.888
H13 -0.723 -1.376 0.888

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 N6 H7 H8 H9 H10 H11 H12 H13
C11.51062.37483.65844.70755.70521.09001.08821.08822.16382.16384.00894.0089
C21.51061.43322.35093.63144.75122.14342.14582.14581.09641.09642.63032.6303
O32.37481.43321.41672.33753.38633.32762.62592.62592.07282.07282.08232.0823
C43.65842.35091.41671.46842.64904.47813.95143.95142.59602.59601.09631.0963
C54.70753.63142.33751.46841.18095.65844.81884.81883.94263.94262.09772.0977
N65.70524.75123.38632.64901.18096.70645.71895.71895.08085.08083.17203.1720
H71.09002.14343.32764.47815.65846.70641.77081.77082.50052.50054.69904.6990
H81.08822.14582.62593.95144.81885.71891.77081.76963.06442.49944.54794.1880
H91.08822.14582.62593.95144.81885.71891.77081.76962.49943.06444.18804.5479
H102.16381.09642.07282.59603.94265.08082.50053.06442.49941.77642.39342.9807
H112.16381.09642.07282.59603.94265.08082.50052.49943.06441.77642.98072.3934
H124.00892.63032.08231.09632.09773.17204.69904.54794.18802.39342.98071.7767
H134.00892.63032.08231.09632.09773.17204.69904.18804.54792.98072.39341.7767

picture of Ethoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.521 C1 C2 H10 111.202
C1 C2 H11 111.202 C2 C1 H7 109.955
C2 C1 H8 110.259 C2 C1 H9 110.259
C2 O3 C4 111.159 O3 C2 H10 109.336
O3 C2 H11 109.336 O3 C4 C5 108.214
O3 C4 H12 111.272 O3 C4 H13 111.272
C4 C5 N6 178.261 C5 C4 H12 108.891
C5 C4 H13 108.891 H7 C1 H8 108.766
H7 C1 H9 108.766 H8 C1 H9 108.796
H10 C2 H11 108.218 H12 C4 H13 108.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability