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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-156.412987
Energy at 298.15K-156.420727
HF Energy-156.048499
Nuclear repulsion energy114.664367
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 MP2/6-31G
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 3145 3010 0.00      
2 A 3130 2995 0.00      
3 A 3046 2915 0.00      
4 A 1732 1657 0.00      
5 A 1571 1503 0.00      
6 A 1490 1425 0.00      
7 A 1377 1318 0.00      
8 A 1208 1156 0.00      
9 A 900 862 0.00      
10 A 508 486 0.00      
11 A 3117 2982 60.85      
12 A 1553 1486 12.71      
13 A 1129 1080 0.20      
14 A 1011 967 35.96      
15 A 247 236 3.61      
16 A 166 159 0.78      
17 A 3117 2983 0.00      
18 A 1554 1486 0.00      
19 A 1114 1066 0.00      
20 A 755 723 0.00      
21 A 209 200 0.00      
22 A 3152 3016 91.03      
23 A 3128 2993 18.17      
24 A 3046 2914 61.31      
25 A 1576 1508 13.21      
26 A 1489 1425 6.46      
27 A 1388 1328 2.82      
28 A 1099 1051 0.11      
29 A 1039 994 11.15      
30 A 288 275 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 24140.2 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 23097.3 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 MP2/6-31G
ABC
1.13791 0.12160 0.11459

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.677 0.000
C2 0.000 -0.677 0.000
C3 -1.245 1.543 0.000
C4 1.245 -1.543 0.000
H5 0.958 1.208 0.000
H6 -0.958 -1.208 0.000
H7 -2.150 0.918 0.000
H8 2.150 -0.918 0.000
H9 -1.281 2.193 0.887
H10 -1.281 2.193 -0.887
H11 1.281 -2.193 0.887
H12 1.281 -2.193 -0.887

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.35371.51632.54471.09552.11422.16332.67672.17412.17413.26583.2658
C21.35372.54471.51632.11421.09552.67672.16333.26583.26582.17412.1741
C31.51632.54473.96452.22852.76521.09984.19251.10061.10064.59604.5960
C42.54471.51633.96452.76522.22854.19251.09984.59604.59601.10061.1006
H51.09552.11422.22852.76523.08343.12172.43662.60222.60223.52963.5296
H62.11421.09552.76522.22853.08342.43663.12173.52963.52962.60222.6022
H72.16332.67671.09984.19253.12172.43664.67511.78031.78034.71534.7153
H82.67672.16334.19251.09982.43663.12174.67514.71534.71531.78031.7803
H92.17413.26581.10064.59602.60223.52961.78034.71531.77355.07995.3806
H102.17413.26581.10064.59602.60223.52961.78034.71531.77355.38065.0799
H113.26582.17414.59601.10063.52962.60224.71531.78035.07995.38061.7735
H123.26582.17414.59601.10063.52962.60224.71531.78035.38065.07991.7735

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 124.816 C1 C2 H6 118.983
C1 C3 H7 110.558 C1 C3 H9 111.368
C1 C3 H10 111.368 C2 C1 C3 124.816
C2 C1 H5 118.983 C2 C4 H8 110.558
C2 C4 H11 111.368 C2 C4 H12 111.368
C3 C1 H5 116.201 C4 C2 H6 116.201
H7 C3 H9 108.015 H7 C3 H10 108.015
H8 C4 H11 108.015 H8 C4 H12 108.015
H9 C3 H10 107.362 H11 C4 H12 107.362
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability