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

using model chemistry: QCISD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-156.740659
Energy at 298.15K-156.748365
HF Energy-156.121998
Nuclear repulsion energy114.804415
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3156 3028 0.00      
2 A 3140 3013 0.00      
3 A 3048 2925 0.00      
4 A 1767 1695 0.00      
5 A 1489 1428 0.00      
6 A 1421 1363 0.00      
7 A 1326 1273 0.00      
8 A 1174 1127 0.00      
9 A 884 848 0.00      
10 A 499 479 0.00      
11 A 3116 2990 50.27      
12 A 1479 1419 9.87      
13 A 1071 1027 1.75      
14 A 997 957 26.14      
15 A 244 234 2.83      
16 A 171 164 0.88      
17 A 3117 2990 0.00      
18 A 1479 1419 0.00      
19 A 1060 1017 0.00      
20 A 745 715 0.00      
21 A 219 210 0.00      
22 A 3161 3033 71.84      
23 A 3138 3011 15.99      
24 A 3048 2924 68.59      
25 A 1495 1435 13.58      
26 A 1420 1362 2.39      
27 A 1324 1271 4.96      
28 A 1101 1056 2.46      
29 A 985 945 8.97      
30 A 280 269 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 23777.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 22812.0 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/cc-pVDZ
ABC
1.13309 0.12245 0.11533

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.674 0.000
C2 0.000 -0.674 0.000
C3 -1.241 1.535 0.000
C4 1.241 -1.535 0.000
H5 0.966 1.203 0.000
H6 -0.966 -1.203 0.000
H7 -2.156 0.916 0.000
H8 2.156 -0.916 0.000
H9 -1.269 2.193 0.890
H10 -1.269 2.193 -0.890
H11 1.269 -2.193 0.890
H12 1.269 -2.193 -0.890

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34801.51062.53391.10152.11102.16972.67912.17002.17003.25893.2589
C21.34802.53391.51062.11101.10152.67912.16973.25893.25892.17002.1700
C31.51062.53393.94822.23232.75171.10454.18941.10661.10664.58154.5815
C42.53391.51063.94822.75172.23234.18941.10454.58154.58151.10661.1066
H51.10152.11102.23232.75173.08583.13552.43032.60182.60183.52323.5232
H62.11101.10152.75172.23233.08582.43033.13553.52323.52322.60182.6018
H72.16972.67911.10454.18943.13552.43034.68551.79081.79084.71074.7107
H82.67912.16974.18941.10452.43033.13554.68554.71074.71071.79081.7908
H92.17003.25891.10664.58152.60183.52321.79084.71071.77925.06725.3705
H102.17003.25891.10664.58152.60183.52321.79084.71071.77925.37055.0672
H113.25892.17004.58151.10663.52322.60184.71071.79085.06725.37051.7792
H123.25892.17004.58151.10663.52322.60184.71071.79085.37055.06721.7792

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 124.749 C1 C2 H6 118.693
C1 C3 H7 111.177 C1 C3 H9 111.078
C1 C3 H10 111.078 C2 C1 C3 124.749
C2 C1 H5 118.693 C2 C4 H8 111.177
C2 C4 H11 111.078 C2 C4 H12 111.078
C3 C1 H5 116.558 C4 C2 H6 116.558
H7 C3 H9 108.168 H7 C3 H10 108.168
H8 C4 H11 108.168 H8 C4 H12 108.168
H9 C3 H10 107.008 H11 C4 H12 107.008
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability