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All results from a given calculation for CH3CHCHCH3 (2-Butene, (E)-)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-156.267681
Energy at 298.15K-156.275456
Nuclear repulsion energy115.816367
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 B1B95/3-21G
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 3158 3022 0.00      
2 A 3135 2999 0.00      
3 A 3050 2918 0.00      
4 A 1762 1686 0.00      
5 A 1549 1482 0.00      
6 A 1458 1395 0.00      
7 A 1369 1310 0.00      
8 A 1188 1136 0.00      
9 A 889 851 0.00      
10 A 513 490 0.00      
11 A 3103 2969 40.57      
12 A 1543 1476 19.71      
13 A 1102 1054 1.84      
14 A 1017 973 44.63      
15 A 246 235 5.07      
16 A 173 165 1.35      
17 A 3103 2969 0.00      
18 A 1543 1476 0.00      
19 A 1105 1057 0.00      
20 A 775 741 0.00      
21 A 226 216 0.00      
22 A 3168 3031 55.84      
23 A 3134 2999 14.96      
24 A 3050 2918 49.24      
25 A 1558 1490 21.79      
26 A 1458 1395 11.78      
27 A 1364 1305 2.11      
28 A 1077 1031 0.29      
29 A 1024 980 21.89      
30 A 286 274 1.07      

Unscaled Zero Point Vibrational Energy (zpe) 24062.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23020.9 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 B1B95/3-21G
ABC
1.15234 0.12458 0.11734

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.329 0.579 0.000
C2 -0.329 -0.579 0.000
C3 -0.329 1.931 0.000
C4 0.329 -1.931 0.000
H5 1.417 0.571 0.000
H6 -1.417 -0.571 0.000
H7 -1.418 1.835 0.000
H8 1.418 -1.835 0.000
H9 -0.034 2.511 0.883
H10 -0.034 2.511 -0.883
H11 0.034 -2.511 0.883
H12 0.034 -2.511 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33051.50362.50951.08892.09022.15142.64792.15502.15503.22633.2263
C21.33052.50951.50362.09021.08892.64792.15143.22633.22632.15502.1550
C31.50362.50953.91742.21312.72851.09364.15111.09641.09644.54304.5430
C42.50951.50363.91742.72852.21314.15111.09364.54304.54301.09641.0964
H51.08892.09022.21312.72853.05593.10422.40582.57852.57853.49123.4912
H62.09021.08892.72852.21313.05592.40583.10423.49123.49122.57852.5785
H72.15142.64791.09364.15113.10422.40584.63781.77501.77504.66604.6660
H82.64792.15144.15111.09362.40583.10424.63784.66604.66601.77501.7750
H92.15503.22631.09644.54302.57853.49121.77504.66601.76555.02185.3231
H102.15503.22631.09644.54302.57853.49121.77504.66601.76555.32315.0218
H113.22632.15504.54301.09643.49122.57854.66601.77505.02185.32311.7655
H123.22632.15504.54301.09643.49122.57854.66601.77505.32315.02181.7655

picture of 2-Butene, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.500 C1 C2 H6 119.187
C1 C3 H7 110.873 C1 C3 H9 110.994
C1 C3 H10 110.994 C2 C1 C3 124.500
C2 C1 H5 119.187 C2 C4 H8 110.873
C2 C4 H11 110.994 C2 C4 H12 110.994
C3 C1 H5 116.313 C4 C2 H6 116.313
H7 C3 H9 108.296 H7 C3 H10 108.296
H8 C4 H11 108.296 H8 C4 H12 108.296
H9 C3 H10 107.254 H11 C4 H12 107.254
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.191      
2 C -0.191      
3 C -0.647      
4 C -0.647      
5 H 0.193      
6 H 0.193      
7 H 0.211      
8 H 0.211      
9 H 0.217      
10 H 0.217      
11 H 0.217      
12 H 0.217      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.163 0.230 0.000
y 0.230 -24.584 0.000
z 0.000 0.000 -27.989
Traceless
 xyz
x 1.123 0.230 0.000
y 0.230 1.992 0.000
z 0.000 0.000 -3.115
Polar
3z2-r2-6.230
x2-y2-0.579
xy0.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.636 0.428 0.000
y 0.428 8.515 0.000
z 0.000 0.000 3.906


<r2> (average value of r2) Å2
<r2> 111.293
(<r2>)1/2 10.550