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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-157.176685
Energy at 298.15K-157.184386
Nuclear repulsion energy117.442506
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 B3PW91/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3171 3039 60.80      
2 A 3148 3018 7.52      
3 A 3042 2915 14.02      
4 A 1760 1687 3.65      
5 A 1502 1440 5.96      
6 A 1423 1363 4.62      
7 A 1296 1242 0.06      
8 A 1027 984 0.78      
9 A 881 844 0.57      
10 A 285 274 0.00      
11 A 3096 2967 0.00      
12 A 1487 1425 0.00      
13 A 1056 1012 0.00      
14 A 1008 966 0.00      
15 A 395 378 0.00      
16 A 144 138 0.00      
17 A 3096 2967 45.28      
18 A 1491 1429 11.53      
19 A 1064 1020 0.93      
20 A 697 668 36.71      
21 A 128 123 1.07      
22 A 3152 3021 20.10      
23 A 3136 3005 1.77      
24 A 3039 2913 43.32      
25 A 1494 1432 2.71      
26 A 1445 1385 8.90      
27 A 1389 1331 2.56      
28 A 1159 1111 0.82      
29 A 993 951 16.21      
30 A 568 544 7.78      

Unscaled Zero Point Vibrational Energy (zpe) 23785.2 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 22795.7 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 B3PW91/6-31G**
ABC
0.54585 0.16923 0.13566

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.669 0.663
C2 0.000 -0.669 0.663
C3 0.000 1.587 -0.521
C4 0.000 -1.587 -0.521
H5 0.000 1.167 1.632
H6 0.000 -1.167 1.632
H7 0.000 1.054 -1.474
H8 0.000 -1.054 -1.474
H9 -0.879 2.244 -0.505
H10 0.879 2.244 -0.505
H11 0.879 -2.244 -0.505
H12 -0.879 -2.244 -0.505

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33761.49792.54761.09032.07632.17112.74472.14882.14883.25903.2590
C21.33762.54761.49792.07631.09032.74472.17113.25903.25902.14882.1488
C31.49792.54763.17482.19373.49601.09252.80831.09731.09733.93113.9311
C42.54761.49793.17483.49602.19372.80831.09253.93113.93111.09731.0973
H51.09032.07632.19373.49602.33403.10853.81882.54982.54984.12034.1203
H62.07631.09033.49602.19372.33403.81883.10854.12034.12032.54982.5498
H72.17112.74471.09252.80833.10853.81882.10821.76851.76853.54823.5482
H82.74472.17112.80831.09253.81883.10852.10823.54823.54821.76851.7685
H92.14883.25901.09733.93112.54984.12031.76853.54821.75784.82024.4882
H102.14883.25901.09733.93112.54984.12031.76853.54821.75784.48824.8202
H113.25902.14883.93111.09734.12032.54983.54821.76854.82024.48821.7578
H123.25902.14883.93111.09734.12032.54983.54821.76854.48824.82021.7578

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 127.825 C1 C2 H6 117.190
C1 C3 H7 112.954 C1 C3 H9 110.846
C1 C3 H10 110.846 C2 C1 C3 127.825
C2 C1 H5 117.190 C2 C4 H8 112.954
C2 C4 H11 110.846 C2 C4 H12 110.846
C3 C1 H5 114.985 C4 C2 H6 114.985
H7 C3 H9 107.729 H7 C3 H10 107.729
H8 C4 H11 107.729 H8 C4 H12 107.729
H9 C3 H10 106.452 H11 C4 H12 106.452
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.425      
2 C -0.425      
3 C -0.095      
4 C -0.095      
5 H 0.140      
6 H 0.140      
7 H 0.140      
8 H 0.140      
9 H 0.131      
10 H 0.131      
11 H 0.109      
12 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.204 0.204
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.482 0.000 0.000
y 0.000 -24.432 0.000
z 0.000 0.000 -25.484
Traceless
 xyz
x -2.524 0.000 0.000
y 0.000 2.051 0.000
z 0.000 0.000 0.473
Polar
3z2-r20.947
x2-y2-3.050
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 99.116
(<r2>)1/2 9.956