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

using model chemistry: MP2/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G**
 hartrees
Energy at 0K-209.510486
Energy at 298.15K-209.514892
HF Energy-208.812327
Nuclear repulsion energy137.875039
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 MP2/6-31G**
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' 3268 3060 4.79      
2 A' 3253 3046 8.59      
3 A' 3230 3025 8.07      
4 A' 3124 2926 12.14      
5 A' 2204 2064 0.24      
6 A' 1736 1626 4.87      
7 A' 1546 1448 10.85      
8 A' 1465 1372 1.31      
9 A' 1360 1274 0.15      
10 A' 1343 1258 0.81      
11 A' 1167 1093 0.05      
12 A' 1060 992 4.18      
13 A' 934 875 5.81      
14 A' 554 519 0.04      
15 A' 394 369 1.21      
16 A' 175 163 4.37      
17 A" 3207 3003 10.57      
18 A" 1533 1436 6.77      
19 A" 1094 1024 0.57      
20 A" 1005 942 36.52      
21 A" 790 739 0.82      
22 A" 467 437 4.67      
23 A" 196 184 1.50      
24 A" 172 161 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 17637.3 cm-1
Scaled (by 0.9365) Zero Point Vibrational Energy (zpe) 16517.3 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 MP2/6-31G**
ABC
1.26813 0.07604 0.07270

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.636 0.467 0.000
H2 2.657 -1.068 0.877
H3 2.657 -1.068 -0.877
C4 2.262 -0.555 0.000
H5 0.288 -1.558 0.000
C6 0.769 -0.586 0.000
H7 0.440 1.505 0.000
C8 0.000 0.516 0.000
N9 -2.612 0.400 0.000
C10 -1.430 0.446 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.76861.76861.08853.10122.14342.42892.63645.24884.0660
H21.76861.75491.09052.57412.13693.50843.21565.54044.4461
H31.76861.75491.09052.57412.13693.50843.21565.54044.4461
C41.08851.09051.09052.21491.49322.75062.50294.96743.8254
H53.10122.57412.57412.21491.08473.06742.09393.49932.6393
C62.14342.13692.13691.49321.08472.11751.34413.52272.4295
H72.42893.50843.50842.75063.06742.11751.08303.24642.1493
C82.63643.21563.21562.50292.09391.34411.08302.61501.4317
N95.24885.54045.54044.96743.49933.52273.24642.61501.1833
C104.06604.44614.44613.82542.63932.42952.14931.43171.1833

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 108.511 H1 C4 H3 108.511
H1 C4 C6 111.280 H2 C4 H3 107.148
H2 C4 C6 110.631 H3 C4 C6 110.631
C4 C6 H5 117.571 C4 C6 C8 123.716
H5 C6 C8 118.714 C6 C8 H7 121.112
C6 C8 C10 122.112 H7 C8 C10 116.776
C8 C10 N9 179.407
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability