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: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-52.577932
Energy at 298.15K-52.585541
HF Energy-52.577932
Nuclear repulsion energy116.065900
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 B3LYP/CEP-121G
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' 3093 3014 38.27      
2 A' 3005 2928 23.55      
3 A' 2964 2889 60.02      
4 A' 2949 2873 44.93      
5 A' 2253 2196 0.16      
6 A' 1538 1498 5.23      
7 A' 1520 1481 3.37      
8 A' 1509 1470 7.65      
9 A' 1443 1406 11.47      
10 A' 1427 1391 3.69      
11 A' 1372 1337 54.05      
12 A' 1140 1110 21.92      
13 A' 1084 1056 171.17      
14 A' 1014 988 19.71      
15 A' 936 913 12.95      
16 A' 865 843 10.07      
17 A' 533 519 0.05      
18 A' 401 390 1.72      
19 A' 284 276 1.38      
20 A' 126 122 2.36      
21 A" 3108 3029 42.86      
22 A" 3011 2935 31.45      
23 A" 3002 2925 66.12      
24 A" 1501 1463 8.26      
25 A" 1285 1252 1.01      
26 A" 1236 1205 1.66      
27 A" 1172 1142 8.69      
28 A" 1025 998 2.17      
29 A" 830 809 1.23      
30 A" 354 345 0.06      
31 A" 226 220 0.64      
32 A" 104 101 10.06      
33 A" 64 62 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 23184.6 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 22593.4 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 B3LYP/CEP-121G
ABC
0.49062 0.04789 0.04475

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.907 2.607 0.000
C2 -1.269 1.117 0.000
O3 0.000 0.362 0.000
C4 -0.202 -1.083 0.000
C5 1.125 -1.747 0.000
N6 2.172 -2.296 0.000
H7 -1.820 3.218 0.000
H8 -0.318 2.857 0.889
H9 -0.318 2.857 -0.889
H10 -1.854 0.847 -0.896
H11 -1.854 0.847 0.896
H12 -0.761 -1.406 -0.894
H13 -0.761 -1.406 0.894

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 N6 H7 H8 H9 H10 H11 H12 H13
C11.53342.42213.75754.80545.79001.09811.09571.09572.19052.19054.11404.1140
C21.53341.47732.44593.73344.84692.17172.17362.17361.10361.10362.72472.7247
O32.42211.47731.45892.39003.43213.38692.66842.66842.11562.11562.12172.1217
C43.75752.44591.45891.48382.66564.59564.04154.04152.69412.69411.10291.1029
C54.80543.73342.39001.48381.18195.77284.90644.90644.05064.05062.11512.1151
N65.79004.84693.43212.66561.18196.80725.79185.79185.18545.18543.19273.1927
H71.09812.17173.38694.59565.77286.80721.78251.78252.53502.53504.82704.8270
H81.09572.17362.66844.04154.90645.79181.78251.77773.09672.53054.64234.2861
H91.09572.17362.66844.04154.90645.79181.78251.77772.53053.09674.28614.6423
H102.19051.10362.11562.69414.05065.18542.53503.09672.53051.79222.50383.0782
H112.19051.10362.11562.69414.05065.18542.53502.53053.09671.79223.07822.5038
H124.11402.72472.12171.10292.11513.19274.82704.64234.28612.50383.07821.7890
H134.11402.72472.12171.10292.11513.19274.82704.28614.64233.07822.50381.7890

picture of Ethoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.112 C1 C2 H10 111.295
C1 C2 H11 111.295 C2 C1 H7 110.136
C2 C1 H8 110.425 C2 C1 H9 110.425
C2 O3 C4 112.815 O3 C2 H10 109.260
O3 C2 H11 109.260 O3 C4 C5 108.615
O3 C4 H12 111.070 O3 C4 H13 111.070
C4 C5 N6 178.896 C5 C4 H12 108.817
C5 C4 H13 108.817 H7 C1 H8 108.687
H7 C1 H9 108.687 H8 C1 H9 108.429
H10 C2 H11 108.579 H12 C4 H13 108.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability