return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2h 1Ag
Energy calculated at LSDA/6-31G**
 hartrees
Energy at 0K-156.338614
Energy at 298.15K-156.346287
Nuclear repulsion energy116.092255
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 LSDA/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 3074 3017 0.00      
2 A 3054 2997 0.00      
3 A 2968 2913 0.00      
4 A 1749 1716 0.00      
5 A 1430 1403 0.00      
6 A 1357 1332 0.00      
7 A 1273 1249 0.00      
8 A 1144 1123 0.00      
9 A 869 853 0.00      
10 A 495 486 0.00      
11 A 3032 2976 26.19      
12 A 1418 1392 17.78      
13 A 1020 1001 0.44      
14 A 964 946 29.04      
15 A 244 240 3.52      
16 A 190 186 2.36      
17 A 3033 2976 0.00      
18 A 1419 1392 0.00      
19 A 1019 1000 0.00      
20 A 728 714 0.00      
21 A 247 242 0.00      
22 A 3075 3017 56.12      
23 A 3059 3002 10.66      
24 A 2968 2912 48.32      
25 A 1440 1413 21.69      
26 A 1360 1335 8.72      
27 A 1267 1243 3.86      
28 A 1106 1085 3.80      
29 A 947 929 22.39      
30 A 274 269 1.49      

Unscaled Zero Point Vibrational Energy (zpe) 23110.4 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 22678.2 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 LSDA/6-31G**
ABC
1.15304 0.12590 0.11853

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.584 0.000
C2 -0.324 -0.584 0.000
C3 -0.324 1.915 0.000
C4 0.324 -1.915 0.000
H5 1.425 0.564 0.000
H6 -1.425 -0.564 0.000
H7 -1.423 1.826 0.000
H8 1.423 -1.826 0.000
H9 -0.032 2.513 0.883
H10 -0.032 2.513 -0.883
H11 0.032 -2.513 0.883
H12 0.032 -2.513 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33471.48072.49871.10172.09182.14362.64832.15142.15143.23293.2329
C21.33472.49871.48072.09181.10172.64832.14363.23293.23292.15142.1514
C31.48072.49873.88462.21042.71251.10294.12881.10551.10554.52914.5291
C42.49871.48073.88462.71252.21044.12881.10294.52914.52911.10551.1055
H51.10172.09182.21042.71253.06543.11552.38962.58922.58923.49063.4906
H62.09181.10172.71252.21043.06542.38963.11553.49063.49062.58922.5892
H72.14362.64831.10294.12883.11552.38964.62981.78481.78484.66064.6606
H82.64832.14364.12881.10292.38963.11554.62984.66064.66061.78481.7848
H92.15143.23291.10554.52912.58923.49061.78484.66061.76665.02585.3272
H102.15143.23291.10554.52912.58923.49061.78484.66061.76665.32725.0258
H113.23292.15144.52911.10553.49062.58924.66061.78485.02585.32721.7666
H123.23292.15144.52911.10553.49062.58924.66061.78485.32725.02581.7666

picture of 2-Butene, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 125.039 C1 C2 H6 117.993
C1 C3 H7 111.292 C1 C3 H9 111.766
C1 C3 H10 111.766 C2 C1 C3 125.039
C2 C1 H5 117.993 C2 C4 H8 111.292
C2 C4 H11 111.766 C2 C4 H12 111.766
C3 C1 H5 116.968 C4 C2 H6 116.968
H7 C3 H9 107.843 H7 C3 H10 107.843
H8 C4 H11 107.843 H8 C4 H12 107.843
H9 C3 H10 106.070 H11 C4 H12 106.070
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.067      
2 C -0.067      
3 C -0.474      
4 C -0.474      
5 H 0.098      
6 H 0.098      
7 H 0.141      
8 H 0.141      
9 H 0.151      
10 H 0.151      
11 H 0.151      
12 H 0.151      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.382 0.206 0.000
y 0.206 -24.480 0.000
z 0.000 0.000 -27.588
Traceless
 xyz
x 0.652 0.206 0.000
y 0.206 2.006 0.000
z 0.000 0.000 -2.657
Polar
3z2-r2-5.315
x2-y2-0.903
xy0.206
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.265 0.312 0.000
y 0.312 9.491 0.000
z 0.000 0.000 4.505


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000