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

using model chemistry: MP2/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-156.861070
Energy at 298.15K-156.868737
HF Energy-156.166162
Nuclear repulsion energy117.801676
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/aug-cc-pVTZ
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 3193 3043 42.93      
2 A1 3177 3027 1.02      
3 A1 3067 2922 13.36      
4 A1 1720 1639 6.03      
5 A1 1515 1443 4.76      
6 A1 1425 1358 4.29      
7 A1 1288 1227 0.00      
8 A1 1030 981 0.68      
9 A1 883 841 0.58      
10 A1 297 283 0.00      
11 A2 3131 2984 0.00      
12 A2 1499 1428 0.00      
13 A2 1060 1010 0.00      
14 A2 998 951 0.00      
15 A2 388 370 0.00      
16 A2 112 106 0.00      
17 B1 3131 2984 24.82      
18 B1 1505 1434 11.57      
19 B1 1071 1020 4.68      
20 B1 695 663 38.33      
21 B1 120 114 0.93      
22 B2 3174 3025 15.05      
23 B2 3158 3009 0.18      
24 B2 3064 2920 30.04      
25 B2 1507 1436 5.59      
26 B2 1440 1372 7.92      
27 B2 1391 1326 1.39      
28 B2 1163 1108 0.26      
29 B2 994 948 13.05      
30 B2 560 534 5.33      

Unscaled Zero Point Vibrational Energy (zpe) 23877.0 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 22752.4 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/aug-cc-pVTZ
ABC
0.54207 0.17160 0.13690

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.673 0.649
C2 0.000 -0.673 0.649
C3 0.000 1.622 -0.513
C4 0.000 -1.622 -0.513
H5 0.000 1.156 1.620
H6 0.000 -1.156 1.620
H7 0.000 1.131 -1.480
H8 0.000 -1.131 -1.480
H9 -0.875 2.274 -0.478
H10 0.875 2.274 -0.478
H11 0.875 -2.274 -0.478
H12 -0.875 -2.274 -0.478

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34501.50032.57171.08482.07032.17742.79002.14462.14463.27353.2735
C21.34502.57171.50032.07031.08482.79002.17743.27353.27352.14462.1446
C31.50032.57173.24362.18333.50211.08402.91781.09171.09173.99273.9927
C42.57171.50033.24363.50212.18332.91781.08403.99273.99271.09171.0917
H51.08482.07032.18333.50212.31173.09973.85212.53322.53324.11454.1145
H62.07031.08483.50212.18332.31173.85213.09974.11454.11452.53322.5332
H72.17742.79001.08402.91783.09973.85212.26251.75321.75323.65553.6555
H82.79002.17742.91781.08403.85213.09972.26253.65553.65551.75321.7532
H92.14463.27351.09173.99272.53324.11451.75323.65551.74994.87254.5474
H102.14463.27351.09173.99272.53324.11451.75323.65551.74994.54744.8725
H113.27352.14463.99271.09174.11452.53323.65551.75324.87254.54741.7499
H123.27352.14463.99271.09174.11452.53323.65551.75324.54744.87251.7499

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 129.250 C1 C2 H6 116.458
C1 C3 H7 113.845 C1 C3 H9 110.677
C1 C3 H10 110.677 C2 C1 C3 129.250
C2 C1 H5 116.458 C2 C4 H8 113.845
C2 C4 H11 110.677 C2 C4 H12 110.677
C3 C1 H5 114.292 C4 C2 H6 114.292
H7 C3 H9 107.380 H7 C3 H10 107.380
H8 C4 H11 107.380 H8 C4 H12 107.380
H9 C3 H10 106.543 H11 C4 H12 106.543
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability