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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-156.681009
Energy at 298.15K-156.688604
HF Energy-156.135005
Nuclear repulsion energy117.275860
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 MP2/6-311G*
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 3200 3041 58.46      
2 A1 3185 3027 2.21      
3 A1 3076 2923 12.43      
4 A1 1734 1648 3.31      
5 A1 1537 1461 8.81      
6 A1 1455 1382 8.61      
7 A1 1312 1247 0.18      
8 A1 1045 993 0.54      
9 A1 885 841 0.65      
10 A1 296 282 0.01      
11 A2 3141 2984 0.00      
12 A2 1521 1445 0.00      
13 A2 1070 1017 0.00      
14 A2 973 924 0.00      
15 A2 376 358 0.00      
16 A2 99 94 0.00      
17 B1 3141 2985 39.28      
18 B1 1527 1451 16.69      
19 B1 1083 1029 2.90      
20 B1 693 659 48.11      
21 B1 103 98 0.68      
22 B2 3183 3025 21.36      
23 B2 3164 3007 0.06      
24 B2 3073 2920 32.77      
25 B2 1529 1453 7.40      
26 B2 1464 1391 7.82      
27 B2 1418 1347 1.37      
28 B2 1171 1112 0.69      
29 B2 1005 955 11.78      
30 B2 567 539 6.33      

Unscaled Zero Point Vibrational Energy (zpe) 24011.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 22818.2 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 MP2/6-311G*
ABC
0.54218 0.16889 0.13521

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.676 0.642
C2 0.000 -0.676 0.642
C3 0.000 1.648 -0.510
C4 0.000 -1.648 -0.510
H5 0.000 1.155 1.620
H6 0.000 -1.155 1.620
H7 0.000 1.179 -1.489
H8 0.000 -1.179 -1.489
H9 -0.877 2.302 -0.464
H10 0.877 2.302 -0.464
H11 0.877 -2.302 -0.464
H12 -0.877 -2.302 -0.464

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.35101.50732.59311.08942.07572.18982.82502.15372.15373.29533.2953
C21.35102.59311.50732.07571.08942.82502.18983.29533.29532.15372.1537
C31.50732.59313.29562.18603.52051.08592.99151.09511.09514.04634.0463
C42.59311.50733.29563.52052.18602.99151.08594.04634.04631.09511.0951
H51.08942.07572.18603.52052.31063.10933.88782.53552.53554.13124.1312
H62.07571.08943.52052.18602.31063.88783.10934.13124.13122.53552.5355
H72.18982.82501.08592.99153.10933.88782.35761.75531.75533.73313.7331
H82.82502.18982.99151.08593.88783.10932.35763.73313.73311.75531.7553
H92.15373.29531.09514.04632.53554.13121.75533.73311.75384.92694.6042
H102.15373.29531.09514.04632.53554.13121.75533.73311.75384.60424.9269
H113.29532.15374.04631.09514.13122.53553.73311.75534.92694.60421.7538
H123.29532.15374.04631.09514.13122.53553.73311.75534.60424.92691.7538

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 130.170 C1 C2 H6 116.131
C1 C3 H7 114.242 C1 C3 H9 110.712
C1 C3 H10 110.712 C2 C1 C3 130.170
C2 C1 H5 116.131 C2 C4 H8 114.242
C2 C4 H11 110.712 C2 C4 H12 110.712
C3 C1 H5 113.700 C4 C2 H6 113.700
H7 C3 H9 107.191 H7 C3 H10 107.191
H8 C4 H11 107.191 H8 C4 H12 107.191
H9 C3 H10 106.408 H11 C4 H12 106.408
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability