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: B1B95/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G
 hartrees
Energy at 0K-286.352280
Energy at 298.15K-286.360004
HF Energy-286.352280
Nuclear repulsion energy214.799948
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 B1B95/6-31G
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' 3181 3034 20.05      
2 A' 3092 2949 13.39      
3 A' 3029 2889 60.13      
4 A' 3027 2887 8.83      
5 A' 2372 2262 0.54      
6 A' 1572 1499 4.77      
7 A' 1549 1477 3.68      
8 A' 1542 1470 8.91      
9 A' 1471 1403 12.91      
10 A' 1457 1390 4.60      
11 A' 1399 1334 45.56      
12 A' 1170 1116 33.29      
13 A' 1132 1080 148.75      
14 A' 1053 1005 15.20      
15 A' 981 935 8.23      
16 A' 898 856 9.86      
17 A' 557 532 0.30      
18 A' 418 399 1.55      
19 A' 291 278 1.78      
20 A' 128 122 2.52      
21 A" 3193 3045 21.39      
22 A" 3074 2931 23.57      
23 A" 3065 2923 54.27      
24 A" 1529 1458 8.93      
25 A" 1317 1256 0.76      
26 A" 1266 1208 2.70      
27 A" 1201 1145 9.72      
28 A" 1049 1001 0.91      
29 A" 855 815 1.99      
30 A" 376 358 0.32      
31 A" 231 220 0.67      
32 A" 107 102 9.80      
33 A" 73 69 0.14      

Unscaled Zero Point Vibrational Energy (zpe) 23827.4 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 22724.2 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 B1B95/6-31G
ABC
0.49775 0.04968 0.04635

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.865 2.569 0.000
C2 -1.239 1.107 0.000
O3 0.000 0.353 0.000
C4 -0.209 -1.068 0.000
C5 1.088 -1.727 0.000
N6 2.124 -2.263 0.000
H7 -1.760 3.194 0.000
H8 -0.272 2.808 0.884
H9 -0.272 2.808 -0.884
H10 -1.829 0.844 -0.888
H11 -1.829 0.844 0.888
H12 -0.777 -1.383 -0.886
H13 -0.777 -1.383 0.886

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 N6 H7 H8 H9 H10 H11 H12 H13
C11.50952.37893.69504.71885.68121.09221.09081.09082.16692.16694.05054.0505
C21.50951.45072.40573.66684.76082.15102.14742.14741.09831.09832.68232.6823
O32.37891.45071.43552.34703.36923.34222.62362.62362.09202.09202.09772.0977
C43.69502.40571.43551.45542.62184.53463.97533.97532.65832.65831.09861.0986
C54.71883.66682.34701.45541.16645.68554.81614.81613.98863.98862.09362.0936
N65.68124.76083.36922.62181.16646.69785.67735.67735.10585.10583.15893.1589
H71.09222.15103.34224.53465.68556.69781.77371.77372.51292.51294.76374.7637
H81.09082.14742.62363.97534.81615.67731.77371.76833.06972.50624.57694.2207
H91.09082.14742.62363.97534.81615.67731.77371.76832.50623.06974.22074.5769
H102.16691.09832.09202.65833.98865.10582.51293.06972.50621.77702.46253.0352
H112.16691.09832.09202.65833.98865.10582.51292.50623.06971.77703.03522.4625
H124.05052.68232.09771.09862.09363.15894.76374.57694.22072.46253.03521.7721
H134.05052.68232.09771.09862.09363.15894.76374.22074.57693.03522.46251.7721

picture of Ethoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 106.941 C1 C2 H10 111.407
C1 C2 H11 111.407 C2 C1 H7 110.508
C2 C1 H8 110.302 C2 C1 H9 110.302
C2 O3 C4 112.927 O3 C2 H10 109.542
O3 C2 H11 109.542 O3 C4 C5 108.551
O3 C4 H12 111.048 O3 C4 H13 111.048
C4 C5 N6 179.599 C5 C4 H12 109.325
C5 C4 H13 109.325 H7 C1 H8 108.686
H7 C1 H9 108.686 H8 C1 H9 108.299
H10 C2 H11 107.986 H12 C4 H13 107.518
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability