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-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-52.648945
Energy at 298.15K-52.656565
HF Energy-52.648945
Nuclear repulsion energy116.898066
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-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' 3130 3022 41.33      
2 A' 3059 2954 22.39      
3 A' 3000 2897 73.89      
4 A' 2987 2885 44.08      
5 A' 2358 2277 1.45      
6 A' 1527 1475 3.73      
7 A' 1498 1447 1.15      
8 A' 1493 1442 6.30      
9 A' 1446 1396 5.71      
10 A' 1403 1355 24.04      
11 A' 1373 1326 62.98      
12 A' 1141 1102 103.34      
13 A' 1132 1093 131.58      
14 A' 1034 999 18.87      
15 A' 939 907 11.92      
16 A' 887 857 3.63      
17 A' 536 518 0.17      
18 A' 410 396 1.66      
19 A' 292 282 1.60      
20 A' 129 124 2.60      
21 A" 3140 3033 43.33      
22 A" 3036 2932 15.30      
23 A" 3026 2922 87.51      
24 A" 1482 1431 6.62      
25 A" 1290 1246 1.57      
26 A" 1249 1206 1.38      
27 A" 1170 1130 7.16      
28 A" 1018 983 1.50      
29 A" 808 781 2.09      
30 A" 357 345 0.40      
31 A" 242 233 0.50      
32 A" 112 108 7.58      
33 A" 68 66 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 23385.9 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 22583.7 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-31G*
ABC
0.51139 0.04843 0.04540

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.993 2.562 0.000
C2 -1.271 1.051 0.000
O3 0.000 0.369 0.000
C4 -0.171 -1.040 0.000
C5 1.173 -1.699 0.000
N6 2.214 -2.249 0.000
H7 -1.946 3.120 0.000
H8 -0.416 2.846 0.895
H9 -0.416 2.846 -0.895
H10 -1.854 0.755 -0.898
H11 -1.854 0.755 0.898
H12 -0.721 -1.391 -0.898
H13 -0.721 -1.391 0.898

Atom - Atom Distances (Å)
  C1 C2 O3 C4 C5 N6 H7 H8 H9 H10 H11 H12 H13
C11.53652.40773.69464.77985.78221.10431.10261.10262.19322.19324.06254.0625
C21.53651.44222.36233.67844.79942.17672.18092.18091.11031.11032.65892.6589
O32.40771.44221.41912.37703.42873.37012.66702.66702.09542.09542.10272.1027
C43.69462.36231.41911.49662.67434.52303.99563.99562.61912.61911.10981.1098
C54.77983.67842.37701.49661.17805.74024.89734.89733.99833.99832.11812.1181
N65.78224.79943.42872.67431.17806.79245.80355.80355.13615.13613.18723.1872
H71.10432.17673.37014.52305.74026.79241.79401.79402.53112.53114.75974.7597
H81.10262.18092.66703.99564.89735.80351.79401.79053.10702.53754.61094.2479
H91.10262.18092.66703.99564.89735.80351.79401.79052.53753.10704.24794.6109
H102.19321.11032.09542.61913.99835.13612.53113.10702.53751.79542.42663.0188
H112.19321.11032.09542.61913.99835.13612.53112.53753.10701.79543.01882.4266
H124.06252.65892.10271.10982.11813.18724.75974.61094.24792.42663.01881.7961
H134.06252.65892.10271.10982.11813.18724.75974.24794.61093.01882.42661.7961

picture of Ethoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.817 C1 C2 H10 110.885
C1 C2 H11 110.885 C2 C1 H7 109.947
C2 C1 H8 110.377 C2 C1 H9 110.377
C2 O3 C4 111.299 O3 C2 H10 109.672
O3 C2 H11 109.672 O3 C4 C5 109.198
O3 C4 H12 111.925 O3 C4 H13 111.925
C4 C5 N6 178.287 C5 C4 H12 107.796
C5 C4 H13 107.796 H7 C1 H8 108.760
H7 C1 H9 108.760 H8 C1 H9 108.574
H10 C2 H11 107.905 H12 C4 H13 108.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability