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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-156.741997
Energy at 298.15K-156.749727
HF Energy-156.122829
Nuclear repulsion energy115.702134
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 QCISD/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 3202 3014 0.00      
2 A 3184 2998 0.00      
3 A 3094 2913 0.00      
4 A 1789 1684 0.00      
5 A 1552 1461 0.00      
6 A 1472 1386 0.00      
7 A 1364 1284 0.00      
8 A 1202 1132 0.00      
9 A 901 848 0.00      
10 A 506 477 0.00      
11 A 3160 2975 59.59      
12 A 1539 1449 7.98      
13 A 1103 1039 1.64      
14 A 1014 955 25.24      
15 A 246 232 2.55      
16 A 168 158 0.68      
17 A 3160 2975 0.00      
18 A 1539 1449 0.00      
19 A 1090 1026 0.00      
20 A 751 707 0.00      
21 A 214 201 0.00      
22 A 3207 3019 77.69      
23 A 3182 2996 20.65      
24 A 3093 2912 64.53      
25 A 1558 1467 10.46      
26 A 1471 1385 3.15      
27 A 1370 1290 4.93      
28 A 1113 1048 1.00      
29 A 1015 956 8.01      
30 A 285 268 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 24272.1 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 22849.8 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 QCISD/6-31G**
ABC
1.15605 0.12397 0.11680

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.669 0.000
C2 0.000 -0.669 0.000
C3 -1.236 1.525 0.000
C4 1.236 -1.525 0.000
H5 0.952 1.195 0.000
H6 -0.952 -1.195 0.000
H7 -2.137 0.911 0.000
H8 2.137 -0.911 0.000
H9 -1.267 2.173 0.879
H10 -1.267 2.173 -0.879
H11 1.267 -2.173 0.879
H12 1.267 -2.173 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33881.50332.51861.08742.09312.15072.65782.15382.15383.23393.2339
C21.33882.51861.50332.09311.08742.65782.15073.23393.23392.15382.1538
C31.50332.51863.92612.21292.73451.09064.16061.09261.09264.55134.5513
C42.51861.50333.92612.73452.21294.16061.09064.55134.55131.09261.0926
H51.08742.09312.21292.73453.05533.10232.41592.57952.57953.49493.4949
H62.09311.08742.73452.21293.05532.41593.10233.49493.49492.57952.5795
H72.15072.65781.09064.16063.10232.41594.64611.76761.76764.67654.6765
H82.65782.15074.16061.09062.41593.10234.64614.67654.67651.76761.7676
H92.15383.23391.09264.55132.57953.49491.76764.67651.75795.03105.3293
H102.15383.23391.09264.55132.57953.49491.76764.67651.75795.32935.0310
H113.23392.15384.55131.09263.49492.57954.67651.76765.03105.32931.7579
H123.23392.15384.55131.09263.49492.57954.67651.76765.32935.03101.7579

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 124.692 C1 C2 H6 118.883
C1 C3 H7 111.021 C1 C3 H9 111.149
C1 C3 H10 111.149 C2 C1 C3 124.692
C2 C1 H5 118.883 C2 C4 H8 111.021
C2 C4 H11 111.149 C2 C4 H12 111.149
C3 C1 H5 116.424 C4 C2 H6 116.424
H7 C3 H9 108.121 H7 C3 H10 108.121
H8 C4 H11 108.121 H8 C4 H12 108.121
H9 C3 H10 107.120 H11 C4 H12 107.120
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability