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All results from a given calculation for C4H5N ((Z)-2-Butenenitrile)

using model chemistry: MP2/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 MP2/CEP-121G*
 hartrees
Energy at 0K-35.193775
Energy at 298.15K-35.198153
HF Energy-34.520459
Nuclear repulsion energy73.364450
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/CEP-121G*
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 3234 3082 4.95      
2 A 3198 3047 12.93      
3 A 3182 3032 2.54      
4 A 3068 2923 12.48      
5 A 2125 2024 0.63      
6 A 1672 1593 2.15      
7 A 1522 1450 13.87      
8 A 1455 1386 5.99      
9 A 1402 1336 1.77      
10 A 1264 1204 0.36      
11 A 1132 1078 0.37      
12 A 966 920 11.64      
13 A 901 858 1.25      
14 A 648 617 1.00      
15 A 382 364 0.04      
16 A 155 148 3.83      
17 A 3150 3001 13.39      
18 A 1516 1444 9.87      
19 A 1073 1022 3.16      
20 A 936 892 0.00      
21 A 733 699 47.20      
22 A 482 460 3.19      
23 A 259 247 1.89      
24 A 127 121 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 17290.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 16474.1 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/CEP-121G*
ABC
0.38644 0.11490 0.09005

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.263 0.331 0.000
N2 -2.302 -0.248 0.000
C3 0.000 1.039 0.000
H4 -0.051 2.124 0.000
C5 1.189 0.386 0.000
H6 2.090 1.000 0.000
C7 1.369 -1.110 0.000
H8 0.408 -1.629 0.000
H9 1.940 -1.420 0.883
H10 1.940 -1.420 -0.883

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 H10
C11.18921.44752.16452.45173.41823.00042.57543.75513.7551
N21.18922.63673.26983.54724.56493.77093.04164.48834.4883
C31.44752.63671.08681.35602.09002.54802.69923.25413.2541
H42.16453.26981.08682.13502.41823.53253.78174.16014.1601
C52.45173.54721.35602.13501.09011.50692.16132.14622.1462
H63.41824.56492.09002.41821.09012.22913.12072.58002.5800
C73.00043.77092.54803.53251.50692.22911.09261.09601.0960
H82.57543.04162.69923.78172.16133.12071.09261.78041.7804
H93.75514.48833.25414.16012.14622.58001.09601.78041.7658
H103.75514.48833.25414.16012.14622.58001.09601.78041.7658

picture of (Z)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 116.597 C1 C3 C5 121.942
N2 C1 C3 179.817 C3 C5 H6 116.978
C3 C5 C7 125.663 H4 C3 C5 121.461
C5 C7 H8 111.494 C5 C7 H9 110.082
C5 C7 H10 110.082 H6 C5 C7 117.359
H8 C7 H9 108.876 H8 C7 H10 108.876
H9 C7 H10 107.326
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability