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

using model chemistry: HF/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 HF/CEP-31G*
 hartrees
Energy at 0K-34.507597
Energy at 298.15K-34.512247
Nuclear repulsion energy71.967857
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 HF/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' 3406 3059 6.25      
2 A' 3380 3035 16.23      
3 A' 3315 2977 30.90      
4 A' 3226 2897 36.18      
5 A' 2590 2326 70.29      
6 A' 1866 1676 23.36      
7 A' 1613 1449 14.97      
8 A' 1549 1391 2.95      
9 A' 1432 1286 2.09      
10 A' 1405 1262 1.42      
11 A' 1219 1095 0.08      
12 A' 1088 977 5.92      
13 A' 973 873 3.84      
14 A' 597 536 0.12      
15 A' 416 374 1.71      
16 A' 191 171 5.00      
17 A" 3287 2952 37.02      
18 A" 1607 1443 8.96      
19 A" 1189 1067 9.42      
20 A" 1097 985 44.97      
21 A" 896 805 4.09      
22 A" 541 485 4.64      
23 A" 209 187 1.11      
24 A" 188 169 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 18639.0 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 16737.8 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 HF/CEP-31G*
ABC
1.25224 0.07543 0.07210

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.627 0.117 0.000
H2 2.414 -1.408 0.880
H3 2.414 -1.408 -0.880
C4 2.108 -0.840 0.000
H5 -0.007 -1.545 0.000
C6 0.606 -0.653 0.000
H7 0.552 1.477 0.000
C8 0.000 0.550 0.000
N9 -2.606 0.773 0.000
C10 -1.457 0.668 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.77321.77321.08863.11432.16292.48062.66245.27354.1208
H21.77321.76081.09162.58022.14853.54443.23075.54384.4801
H31.77321.76081.09162.58022.14853.54443.23075.54384.4801
C41.08861.09161.09162.22901.51352.79042.52474.98173.8704
H53.11432.58022.58022.22901.08193.07302.09483.48242.6457
C62.16292.14852.14851.51351.08192.13061.34703.51392.4495
H72.48063.54443.54442.79043.07302.13061.07903.23532.1659
C82.66243.23073.23072.52472.09481.34701.07902.61511.4616
N95.27355.54385.54384.98173.48243.51393.23532.61511.1535
C104.12084.48014.48013.87042.64572.44952.16591.46161.1535

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 108.846 H1 C4 H3 108.846
H1 C4 C6 111.402 H2 C4 H3 107.511
H2 C4 C6 110.070 H3 C4 C6 110.070
C4 C6 H5 117.404 C4 C6 C8 123.814
H5 C6 C8 118.782 C6 C8 H7 122.479
C6 C8 C10 121.363 H7 C8 C10 116.158
C8 C10 N9 179.402
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.147      
2 H 0.128      
3 H 0.128      
4 C -0.330      
5 H 0.282      
6 C -0.189      
7 H 0.297      
8 C -0.200      
9 N 0.326      
10 C -0.589      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.880 -1.324 0.000 5.056
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.963 2.627 0.000
y 2.627 -27.544 0.000
z 0.000 0.000 -31.243
Traceless
 xyz
x -10.570 2.627 0.000
y 2.627 8.059 0.000
z 0.000 0.000 2.510
Polar
3z2-r25.020
x2-y2-12.419
xy2.627
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.653 -2.271 0.000
y -2.271 6.838 0.000
z 0.000 0.000 4.041


<r2> (average value of r2) Å2
<r2> 121.704
(<r2>)1/2 11.032