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

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

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/6-31+G**
 hartrees
Energy at 0K-156.748905
Energy at 298.15K-156.756610
HF Energy-156.126251
Nuclear repulsion energy115.575305
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/6-31+G**
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 3194 3019 0.00      
2 A 3174 3001 0.00      
3 A 3086 2917 0.00      
4 A 1773 1676 0.00      
5 A 1541 1457 0.00      
6 A 1465 1385 0.00      
7 A 1359 1285 0.00      
8 A 1198 1133 0.00      
9 A 897 848 0.00      
10 A 505 477 0.00      
11 A 3150 2978 49.65      
12 A 1522 1439 11.03      
13 A 1096 1036 4.63      
14 A 998 943 41.55      
15 A 245 231 3.92      
16 A 162 154 1.09      
17 A 3151 2979 0.00      
18 A 1523 1440 0.00      
19 A 1081 1022 0.00      
20 A 743 703 0.00      
21 A 210 199 0.00      
22 A 3200 3025 77.37      
23 A 3172 2999 23.20      
24 A 3085 2916 71.42      
25 A 1547 1462 15.94      
26 A 1464 1384 3.79      
27 A 1365 1290 4.13      
28 A 1108 1048 1.96      
29 A 1012 957 7.94      
30 A 284 269 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 24153.6 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 22834.8 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/6-31+G**
ABC
1.15420 0.12364 0.11649

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.671 0.000
C2 0.000 -0.671 0.000
C3 -1.236 1.528 0.000
C4 1.236 -1.528 0.000
H5 0.953 1.195 0.000
H6 -0.953 -1.195 0.000
H7 -2.138 0.914 0.000
H8 2.138 -0.914 0.000
H9 -1.265 2.176 0.880
H10 -1.265 2.176 -0.880
H11 1.265 -2.176 0.880
H12 1.265 -2.176 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34161.50472.52301.08802.09532.15222.66182.15422.15423.23743.2374
C21.34162.52301.50472.09531.08802.66182.15223.23743.23742.15422.1542
C31.50472.52303.93182.21492.73821.09134.16601.09301.09304.55594.5559
C42.52301.50473.93182.73822.21494.16601.09134.55594.55591.09301.0930
H51.08802.09532.21492.73823.05753.10452.41942.58022.58023.49833.4983
H62.09531.08802.73822.21493.05752.41943.10453.49833.49832.58022.5802
H72.15222.66181.09134.16603.10452.41944.65121.76931.76934.68064.6806
H82.66182.15224.16601.09132.41943.10454.65124.68064.68061.76931.7693
H92.15423.23741.09304.55592.58023.49831.76934.68061.75965.03455.3331
H102.15423.23741.09304.55592.58023.49831.76934.68061.75965.33315.0345
H113.23742.15424.55591.09303.49832.58024.68061.76935.03455.33311.7596
H123.23742.15424.55591.09303.49832.58024.68061.76935.33315.03451.7596

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 124.750 C1 C2 H6 118.804
C1 C3 H7 110.997 C1 C3 H9 111.056
C1 C3 H10 111.056 C2 C1 C3 124.750
C2 C1 H5 118.804 C2 C4 H8 110.997
C2 C4 H11 111.056 C2 C4 H12 111.056
C3 C1 H5 116.445 C4 C2 H6 116.445
H7 C3 H9 108.189 H7 C3 H10 108.189
H8 C4 H11 108.189 H8 C4 H12 108.189
H9 C3 H10 107.204 H11 C4 H12 107.204
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability