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

using model chemistry: MP2=FULL/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=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-156.935497
Energy at 298.15K-156.943199
HF Energy-156.166407
Nuclear repulsion energy118.232404
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=FULL/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 3200 3044 37.59      
2 A1 3177 3023 5.72      
3 A1 3075 2926 13.22      
4 A1 1738 1653 5.86      
5 A1 1521 1447 5.17      
6 A1 1430 1361 4.90      
7 A1 1296 1233 0.00      
8 A1 1038 987 0.68      
9 A1 889 846 0.65      
10 A1 298 283 0.00      
11 A2 3132 2979 0.00      
12 A2 1507 1433 0.00      
13 A2 1075 1023 0.00      
14 A2 1012 963 0.00      
15 A2 391 372 0.00      
16 A2 119 113 0.00      
17 B1 3132 2980 23.90      
18 B1 1513 1440 11.90      
19 B1 1081 1028 4.77      
20 B1 707 673 38.22      
21 B1 122 116 0.95      
22 B2 3171 3017 14.02      
23 B2 3156 3003 0.47      
24 B2 3072 2923 29.76      
25 B2 1511 1438 5.96      
26 B2 1448 1377 8.42      
27 B2 1396 1328 0.79      
28 B2 1169 1112 0.31      
29 B2 1000 951 13.49      
30 B2 555 528 5.59      

Unscaled Zero Point Vibrational Energy (zpe) 23963.6 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 22799.0 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 MP2=FULL/aug-cc-pVTZ
ABC
0.54625 0.17293 0.13798

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.669 0.648
C2 0.000 -0.669 0.648
C3 0.000 1.611 -0.512
C4 0.000 -1.611 -0.512
H5 0.000 1.151 1.616
H6 0.000 -1.151 1.616
H7 0.000 1.115 -1.473
H8 0.000 -1.115 -1.473
H9 -0.874 2.261 -0.480
H10 0.874 2.261 -0.480
H11 0.874 -2.261 -0.480
H12 -0.874 -2.261 -0.480

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33861.49402.55831.08112.06172.16782.77232.13772.13773.25933.2593
C21.33862.55831.49402.06171.08112.77232.16783.25933.25932.13772.1377
C31.49402.55833.22212.17663.48661.08192.89111.08951.08953.96963.9696
C42.55831.49403.22213.48662.17662.89111.08193.96963.96961.08951.0895
H51.08112.06172.17663.48662.30243.08943.83152.52742.52744.09874.0987
H62.06171.08113.48662.17662.30243.83153.08944.09874.09872.52742.5274
H72.16782.77231.08192.89113.08943.83152.23081.75011.75013.62643.6264
H82.77232.16782.89111.08193.83153.08942.23083.62643.62641.75011.7501
H92.13773.25931.08953.96962.52744.09871.75013.62641.74774.84804.5221
H102.13773.25931.08953.96962.52744.09871.75013.62641.74774.52214.8480
H113.25932.13773.96961.08954.09872.52743.62641.75014.84804.52211.7477
H123.25932.13773.96961.08954.09872.52743.62641.75014.52214.84801.7477

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 129.078 C1 C2 H6 116.473
C1 C3 H7 113.656 C1 C3 H9 110.703
C1 C3 H10 110.703 C2 C1 C3 129.078
C2 C1 H5 116.473 C2 C4 H8 113.656
C2 C4 H11 110.703 C2 C4 H12 110.703
C3 C1 H5 114.449 C4 C2 H6 114.449
H7 C3 H9 107.405 H7 C3 H10 107.405
H8 C4 H11 107.405 H8 C4 H12 107.405
H9 C3 H10 106.649 H11 C4 H12 106.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability