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 C4H5N ((E)-2-Butenenitrile)

using model chemistry: MP2=FULL/cc-pVTZ

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=FULL/cc-pVTZ
 hartrees
Energy at 0K-209.787098
Energy at 298.15K-209.791580
HF Energy-208.878783
Nuclear repulsion energy138.908793
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=FULL/cc-pVTZ
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' 3237 3073 3.18      
2 A' 3223 3060 4.35      
3 A' 3176 3016 7.71      
4 A' 3088 2932 9.19      
5 A' 2210 2099 0.11      
6 A' 1722 1635 7.83      
7 A' 1512 1435 14.74      
8 A' 1424 1352 2.42      
9 A' 1340 1272 0.24      
10 A' 1319 1252 1.03      
11 A' 1152 1094 0.03      
12 A' 1055 1001 5.52      
13 A' 917 871 7.05      
14 A' 551 523 0.03      
15 A' 391 371 1.27      
16 A' 173 164 4.19      
17 A" 3151 2991 5.79      
18 A" 1503 1427 8.13      
19 A" 1088 1033 2.12      
20 A" 1022 970 40.00      
21 A" 838 795 0.41      
22 A" 492 467 3.47      
23 A" 210 200 1.50      
24 A" 178 169 0.66      

Unscaled Zero Point Vibrational Energy (zpe) 17485.2 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 16600.4 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 MP2=FULL/cc-pVTZ
ABC
1.29803 0.07705 0.07371

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.627 0.450 0.000
H2 2.629 -1.083 0.875
H3 2.629 -1.083 -0.875
C4 2.245 -0.565 0.000
H5 0.280 -1.550 0.000
C6 0.760 -0.584 0.000
H7 0.434 1.495 0.000
C8 0.000 0.510 0.000
N9 -2.585 0.418 0.000
C10 -1.422 0.447 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.76461.76461.08433.08302.13382.42862.62725.21164.0486
H21.76461.74931.08642.54952.12263.49633.19555.49564.4174
H31.76461.74931.08642.54952.12263.49633.19555.49564.4174
C41.08431.08641.08642.19781.48492.74252.48894.92893.8039
H53.08302.54952.54952.19781.07833.04832.07853.47592.6235
C62.13382.12262.12261.48491.07832.10441.33223.49212.4134
H72.42863.49633.49632.74253.04832.10441.07633.20522.1316
C82.62723.19553.19552.48892.07851.33221.07632.58661.4235
N95.21165.49565.49564.92893.47593.49213.20522.58661.1633
C104.04864.41744.41743.80392.62352.41342.13161.42351.1633

picture of (E)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C4 H2 108.760 H1 C4 H3 108.760
H1 C4 C6 111.353 H2 C4 H3 107.233
H2 C4 C6 110.311 H3 C4 C6 110.311
C4 C6 H5 117.182 C4 C6 C8 124.044
H5 C6 C8 118.774 C6 C8 H7 121.426
C6 C8 C10 122.245 H7 C8 C10 116.329
C8 C10 N9 178.851
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability