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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-208.917264
Energy at 298.15K-208.921854
Nuclear repulsion energy138.249615
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 B3PW91/3-21G
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' 3187 3064 8.58      
2 A' 3176 3053 1.27      
3 A' 3139 3017 7.47      
4 A' 3047 2928 7.73      
5 A' 2335 2244 13.40      
6 A' 1710 1644 16.41      
7 A' 1541 1481 21.28      
8 A' 1458 1402 10.39      
9 A' 1367 1314 0.95      
10 A' 1354 1301 0.04      
11 A' 1151 1106 1.94      
12 A' 1047 1007 6.60      
13 A' 932 896 9.64      
14 A' 599 576 0.03      
15 A' 418 402 1.23      
16 A' 193 186 2.42      
17 A" 3099 2979 7.97      
18 A" 1535 1476 13.51      
19 A" 1105 1062 1.74      
20 A" 1006 967 60.83      
21 A" 856 822 1.08      
22 A" 564 542 3.10      
23 A" 190 183 1.62      
24 A" 179 172 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 17594.1 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 16911.5 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 B3PW91/3-21G
ABC
1.28368 0.07637 0.07306

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.648 0.411 0.000
H2 2.631 -1.136 0.884
H3 2.631 -1.136 -0.884
C4 2.248 -0.608 0.000
H5 0.257 -1.581 0.000
C6 0.749 -0.610 0.000
H7 0.469 1.485 0.000
C8 0.000 0.503 0.000
N9 -2.586 0.476 0.000
C10 -1.418 0.485 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.78171.78171.09463.11212.15612.42932.64935.23424.0667
H21.78171.76731.09852.57262.14543.51093.22335.53184.4506
H31.78171.76731.09852.57262.14543.51093.22335.53184.4506
C41.09461.09851.09852.21621.49922.74682.50724.95393.8255
H53.11212.57262.57262.21621.08873.07302.09943.50892.6596
C62.15612.14542.14541.49921.08872.11321.34093.50702.4277
H72.42933.51093.51092.74683.07302.11321.08813.21682.1355
C82.64933.22333.22332.50722.09941.34091.08812.58621.4185
N95.23425.53185.53184.95393.50893.50703.21682.58621.1677
C104.06674.45064.45063.82552.65962.42772.13551.41851.1677

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 108.655 H1 C4 H3 108.655
H1 C4 C6 111.502 H2 C4 H3 107.100
H2 C4 C6 110.401 H3 C4 C6 110.401
C4 C6 H5 116.935 C4 C6 C8 123.863
H5 C6 C8 119.202 C6 C8 H7 120.559
C6 C8 C10 123.213 H7 C8 C10 116.228
C8 C10 N9 179.709
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.231      
2 H 0.244      
3 H 0.244      
4 C -0.672      
5 H 0.243      
6 C -0.148      
7 H 0.260      
8 C -0.206      
9 N -0.496      
10 C 0.300      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.358 -0.675 0.000 4.410
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.286 0.882 0.000
y 0.882 -26.859 0.000
z 0.000 0.000 -30.903
Traceless
 xyz
x -8.405 0.882 0.000
y 0.882 7.236 0.000
z 0.000 0.000 1.169
Polar
3z2-r22.338
x2-y2-10.427
xy0.882
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 151.470
(<r2>)1/2 12.307