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

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-156.820984
Energy at 298.15K-156.828689
HF Energy-156.128247
Nuclear repulsion energy117.351800
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(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3205 3036 48.53      
2 A1 3187 3019 2.85      
3 A1 3081 2919 9.76      
4 A1 1765 1672 2.51      
5 A1 1531 1450 4.86      
6 A1 1452 1375 3.37      
7 A1 1309 1240 0.01      
8 A1 1039 985 0.73      
9 A1 882 836 0.39      
10 A1 297 281 0.00      
11 A2 3135 2970 0.00      
12 A2 1515 1435 0.00      
13 A2 1073 1017 0.00      
14 A2 1020 967 0.00      
15 A2 394 373 0.00      
16 A2 122 116 0.00      
17 B1 3136 2971 36.57      
18 B1 1520 1440 8.52      
19 B1 1084 1027 2.25      
20 B1 711 674 28.70      
21 B1 123 116 0.59      
22 B2 3183 3016 15.96      
23 B2 3169 3002 2.45      
24 B2 3078 2916 30.99      
25 B2 1522 1442 2.66      
26 B2 1465 1388 5.17      
27 B2 1414 1340 3.50      
28 B2 1173 1111 0.43      
29 B2 999 946 9.80      
30 B2 566 536 5.52      

Unscaled Zero Point Vibrational Energy (zpe) 24073.9 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 22807.6 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(2df,p)
ABC
0.54254 0.16907 0.13534

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.672 0.642
C2 0.000 -0.672 0.642
C3 0.000 1.647 -0.509
C4 0.000 -1.647 -0.509
H5 0.000 1.153 1.617
H6 0.000 -1.153 1.617
H7 0.000 1.180 -1.489
H8 0.000 -1.180 -1.489
H9 -0.877 2.302 -0.463
H10 0.877 2.302 -0.463
H11 0.877 -2.302 -0.463
H12 -0.877 -2.302 -0.463

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34411.50892.58951.08682.06922.19122.82382.15552.15553.29153.2915
C21.34412.58951.50892.06921.08682.82382.19123.29153.29152.15552.1555
C31.50892.58953.29462.18263.51611.08572.99251.09501.09504.04554.0455
C42.58951.50893.29463.51612.18262.99251.08574.04554.04551.09501.0950
H51.08682.06922.18263.51612.30653.10613.88482.53242.53244.12694.1269
H62.06921.08683.51612.18262.30653.88483.10614.12694.12692.53242.5324
H72.19122.82381.08572.99253.10613.88482.36021.75491.75493.73443.7344
H82.82382.19122.99251.08573.88483.10612.36023.73443.73441.75491.7549
H92.15553.29151.09504.04552.53244.12691.75493.73441.75324.92624.6037
H102.15553.29151.09504.04552.53244.12691.75493.73441.75324.60374.9262
H113.29152.15554.04551.09504.12692.53243.73441.75494.92624.60371.7532
H123.29152.15554.04551.09504.12692.53243.73441.75494.60374.92621.7532

picture of 2-Butene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 130.264 C1 C2 H6 116.281
C1 C3 H7 114.250 C1 C3 H9 110.742
C1 C3 H10 110.742 C2 C1 C3 130.264
C2 C1 H5 116.281 C2 C4 H8 114.250
C2 C4 H11 110.742 C2 C4 H12 110.742
C3 C1 H5 113.455 C4 C2 H6 113.455
H7 C3 H9 107.174 H7 C3 H10 107.174
H8 C4 H11 107.174 H8 C4 H12 107.174
H9 C3 H10 106.369 H11 C4 H12 106.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability