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

using model chemistry: PBEPBE/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 PBEPBE/6-31G*
 hartrees
Energy at 0K-156.989468
Energy at 298.15K-156.997101
Nuclear repulsion energy116.757667
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 PBEPBE/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 3091 3047 66.46      
2 A 3071 3027 5.27      
3 A 2970 2928 13.95      
4 A 1706 1682 3.76      
5 A 1478 1457 5.47      
6 A 1395 1375 4.19      
7 A 1267 1249 0.10      
8 A 1005 991 0.80      
9 A 864 852 0.57      
10 A 284 280 0.01      
11 A 3017 2974 0.00      
12 A 1462 1441 0.00      
13 A 1027 1013 0.00      
14 A 969 955 0.00      
15 A 383 377 0.00      
16 A 154 151 0.00      
17 A 3018 2974 44.58      
18 A 1466 1445 11.73      
19 A 1040 1026 0.33      
20 A 674 664 35.82      
21 A 133 131 1.17      
22 A 3074 3030 22.20      
23 A 3057 3013 0.77      
24 A 2967 2925 44.29      
25 A 1470 1449 2.78      
26 A 1412 1392 9.53      
27 A 1362 1342 3.12      
28 A 1134 1118 1.32      
29 A 974 960 17.29      
30 A 555 547 8.16      

Unscaled Zero Point Vibrational Energy (zpe) 23238.1 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 22905.8 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 PBEPBE/6-31G*
ABC
0.53984 0.16753 0.13429

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.674 0.666
C2 0.000 -0.674 0.666
C3 0.000 1.594 -0.523
C4 0.000 -1.594 -0.523
H5 0.000 1.178 1.643
H6 0.000 -1.178 1.643
H7 0.000 1.055 -1.483
H8 0.000 -1.055 -1.483
H9 -0.885 2.258 -0.510
H10 0.885 2.258 -0.510
H11 0.885 -2.258 -0.510
H12 -0.885 -2.258 -0.510

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34781.50302.56051.09912.09342.18262.75802.16212.16213.28033.2803
C21.34782.56051.50302.09341.09912.75802.18263.28033.28032.16212.1621
C31.50302.56053.18802.20503.51721.10172.81741.10661.10663.95223.9522
C42.56051.50303.18803.51722.20502.81741.10173.95223.95221.10661.1066
H51.09912.09342.20503.51722.35533.12843.84122.56592.56594.14964.1496
H62.09341.09913.51722.20502.35533.84123.12844.14964.14962.56592.5659
H72.18262.75801.10172.81743.12843.84122.10921.78291.78293.56413.5641
H82.75802.18262.81741.10173.84123.12842.10923.56413.56411.78291.7829
H92.16213.28031.10663.95222.56594.14961.78293.56411.77074.85024.5154
H102.16213.28031.10663.95222.56594.14961.78293.56411.77074.51544.8502
H113.28032.16213.95221.10664.14962.56593.56411.78294.85024.51541.7707
H123.28032.16213.95221.10664.14962.56593.56411.78294.51544.85021.7707

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 127.745 C1 C2 H6 117.278
C1 C3 H7 112.940 C1 C3 H9 110.978
C1 C3 H10 110.978 C2 C1 C3 127.745
C2 C1 H5 117.278 C2 C4 H8 112.940
C2 C4 H11 110.978 C2 C4 H12 110.978
C3 C1 H5 114.977 C4 C2 H6 114.977
H7 C3 H9 107.683 H7 C3 H10 107.683
H8 C4 H11 107.683 H8 C4 H12 107.683
H9 C3 H10 106.276 H11 C4 H12 106.276
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.097      
2 C -0.097      
3 C -0.534      
4 C -0.534      
5 H 0.128      
6 H 0.128      
7 H 0.165      
8 H 0.165      
9 H 0.169      
10 H 0.169      
11 H 0.169      
12 H 0.169      


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 -27.577 0.000 0.000
y 0.000 -24.556 0.000
z 0.000 0.000 -25.644
Traceless
 xyz
x -2.477 0.000 0.000
y 0.000 2.054 0.000
z 0.000 0.000 0.423
Polar
3z2-r20.846
x2-y2-3.021
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.384 0.000 0.000
y 0.000 9.088 0.000
z 0.000 0.000 6.149


<r2> (average value of r2) Å2
<r2> 100.090
(<r2>)1/2 10.005