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

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-156.318067
Energy at 298.15K-156.325758
HF Energy-156.318067
Nuclear repulsion energy117.424500
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 wB97X-D/3-21G*
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 3208 3041 44.35      
2 A1 3179 3013 7.92      
3 A1 3070 2910 8.48      
4 A1 1775 1683 1.37      
5 A1 1568 1486 13.73      
6 A1 1480 1403 13.73      
7 A1 1348 1278 0.80      
8 A1 1068 1012 2.29      
9 A1 877 831 0.75      
10 A1 315 299 0.06      
11 A2 3119 2956 0.00      
12 A2 1558 1477 0.00      
13 A2 1116 1058 0.00      
14 A2 1042 988 0.00      
15 A2 400 379 0.00      
16 A2 120 114 0.00      
17 B1 3119 2957 34.86      
18 B1 1563 1482 19.88      
19 B1 1109 1051 0.00      
20 B1 718 680 59.12      
21 B1 79 75 1.29      
22 B2 3183 3017 10.41      
23 B2 3165 3000 2.92      
24 B2 3068 2908 29.54      
25 B2 1556 1475 7.43      
26 B2 1482 1404 8.76      
27 B2 1462 1386 0.68      
28 B2 1193 1131 4.20      
29 B2 993 941 16.06      
30 B2 595 564 8.74      

Unscaled Zero Point Vibrational Energy (zpe) 24264.5 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 22997.9 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 wB97X-D/3-21G*
ABC
0.53652 0.17086 0.13618

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.670 0.647
C2 0.000 -0.670 0.647
C3 0.000 1.637 -0.512
C4 0.000 -1.637 -0.512
H5 0.000 1.156 1.619
H6 0.000 -1.156 1.619
H7 0.000 1.155 -1.488
H8 0.000 -1.155 -1.488
H9 -0.881 2.290 -0.470
H10 0.881 2.290 -0.470
H11 0.881 -2.290 -0.470
H12 -0.881 -2.290 -0.470

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33951.50972.58181.08732.06872.18942.80832.15652.15653.28433.2843
C21.33952.58181.50972.06871.08732.80832.18943.28433.28432.15652.1565
C31.50972.58183.27462.18503.51371.08902.95751.09741.09744.02564.0256
C42.58181.50973.27463.51372.18502.95751.08904.02564.02561.09741.0974
H51.08732.06872.18503.51372.31223.10753.87242.53552.53554.12564.1256
H62.06871.08733.51372.18502.31223.87243.10754.12564.12562.53552.5355
H72.18942.80831.08902.95753.10753.87242.30901.76141.76143.69873.6987
H82.80832.18942.95751.08903.87243.10752.30903.69873.69871.76141.7614
H92.15653.28431.09744.02562.53554.12561.76143.69871.76164.90804.5810
H102.15653.28431.09744.02562.53554.12561.76143.69871.76164.58104.9080
H113.28432.15654.02561.09744.12562.53553.69871.76144.90804.58101.7616
H123.28432.15654.02561.09744.12562.53553.69871.76144.58104.90801.7616

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 129.857 C1 C2 H6 116.569
C1 C3 H7 113.825 C1 C3 H9 110.622
C1 C3 H10 110.622 C2 C1 C3 129.857
C2 C1 H5 116.569 C2 C4 H8 113.825
C2 C4 H11 110.622 C2 C4 H12 110.622
C3 C1 H5 113.573 C4 C2 H6 113.573
H7 C3 H9 107.341 H7 C3 H10 107.341
H8 C4 H11 107.341 H8 C4 H12 107.341
H9 C3 H10 106.769 H11 C4 H12 106.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.197      
2 C -0.197      
3 C -0.666      
4 C -0.666      
5 H 0.205      
6 H 0.205      
7 H 0.216      
8 H 0.216      
9 H 0.221      
10 H 0.221      
11 H 0.221      
12 H 0.221      


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 -0.180 0.180
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.971 0.000 0.000
y 0.000 -24.351 0.000
z 0.000 0.000 -25.405
Traceless
 xyz
x -3.093 0.000 0.000
y 0.000 2.337 0.000
z 0.000 0.000 0.756
Polar
3z2-r21.512
x2-y2-3.620
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.883 0.000 0.000
y 0.000 8.301 0.000
z 0.000 0.000 5.511


<r2> (average value of r2) Å2
<r2> 98.828
(<r2>)1/2 9.941