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 ((Z)-2-Butenenitrile)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-209.580399
Energy at 298.15K-209.584903
HF Energy-208.853537
Nuclear repulsion energy141.320257
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 MP2/6-311G**
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 3231 3070 3.59      
2 A 3197 3038 8.65      
3 A 3180 3021 2.18      
4 A 3075 2922 8.92      
5 A 2184 2075 1.11      
6 A 1692 1608 2.17      
7 A 1506 1431 12.68      
8 A 1440 1368 4.97      
9 A 1400 1330 2.24      
10 A 1262 1200 0.19      
11 A 1129 1073 0.18      
12 A 974 925 11.80      
13 A 914 869 1.55      
14 A 658 626 1.45      
15 A 391 372 0.08      
16 A 158 150 4.12      
17 A 3150 2994 9.38      
18 A 1500 1425 8.48      
19 A 1071 1017 1.62      
20 A 971 923 0.23      
21 A 745 708 39.28      
22 A 509 483 2.59      
23 A 276 262 2.47      
24 A 145 138 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 17379.2 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 16513.7 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 MP2/6-311G**
ABC
0.39370 0.11623 0.09126

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.215 0.245 0.000
N2 -2.214 -0.377 0.000
C3 0.000 1.005 0.000
H4 -0.102 2.086 0.000
C5 1.215 0.424 0.000
H6 2.081 1.084 0.000
C7 1.475 -1.050 0.000
H8 0.545 -1.621 0.000
H9 2.061 -1.329 0.882
H10 2.061 -1.329 -0.882

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 H10
C11.17711.43272.15052.43673.40092.98532.56513.73973.7397
N21.17712.60973.24413.52164.53673.74973.02624.46734.4673
C31.43272.60971.08561.34702.08252.52912.68203.23603.2360
H42.15053.24411.08562.12052.40173.50953.76294.13714.1371
C52.43673.52161.34702.12051.08871.49642.15262.13672.1367
H63.40094.53672.08252.40171.08872.21843.11152.56962.5696
C72.98533.74972.52913.50951.49642.21841.09201.09481.0948
H82.56513.02622.68203.76292.15263.11151.09201.77801.7780
H93.73974.46733.23604.13712.13672.56961.09481.77801.7633
H103.73974.46733.23604.13712.13672.56961.09481.77801.7633

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 116.618 C1 C3 C5 122.445
N2 C1 C3 179.905 C3 C5 H6 117.118
C3 C5 C7 125.531 H4 C3 C5 120.936
C5 C7 H8 111.580 C5 C7 H9 110.136
C5 C7 H10 110.136 H6 C5 C7 117.351
H8 C7 H9 108.796 H8 C7 H10 108.796
H9 C7 H10 107.283
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability