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 CH3CClCHCH3 (2-Butene, 2-chloro-, (Z)-)

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-41.678307
Energy at 298.15K-41.685140
Nuclear repulsion energy89.745930
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 B3LYP/CEP-121G
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' 3123 3043 25.13      
2 A' 3098 3019 19.07      
3 A' 3088 3009 14.96      
4 A' 2993 2917 30.58      
5 A' 2987 2911 41.52      
6 A' 1716 1672 14.40      
7 A' 1516 1477 13.10      
8 A' 1509 1470 0.79      
9 A' 1439 1403 2.23      
10 A' 1437 1400 9.06      
11 A' 1325 1291 28.81      
12 A' 1161 1131 32.08      
13 A' 1095 1067 5.10      
14 A' 1050 1023 19.83      
15 A' 898 875 33.33      
16 A' 556 542 34.57      
17 A' 510 497 2.05      
18 A' 327 318 0.74      
19 A' 228 222 1.80      
20 A" 3075 2997 23.67      
21 A" 3048 2971 35.90      
22 A" 1515 1476 11.27      
23 A" 1491 1453 13.77      
24 A" 1088 1060 0.25      
25 A" 1075 1047 1.29      
26 A" 832 811 18.34      
27 A" 457 446 3.59      
28 A" 244 238 2.96      
29 A" 188 184 2.03      
30 A" 109 106 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 21587.1 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 21036.7 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 B3LYP/CEP-121G
ABC
0.15373 0.10668 0.06450

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 1.273 2.215 0.000
Cl2 -1.803 0.017 0.000
C3 0.769 -1.984 0.000
C4 0.201 1.984 0.000
H5 -0.258 2.442 0.886
H6 -0.258 2.442 -0.886
C7 0.000 0.483 0.000
C8 0.949 -0.479 0.000
H9 1.979 -0.110 0.000
H10 -0.287 -2.265 0.000
H11 1.248 -2.429 -0.884
H12 1.248 -2.429 0.884

Atom - Atom Distances (Å)
  H1 Cl2 C3 C4 H5 H6 C7 C8 H9 H10 H11 H12
H13.78074.22871.09721.78321.78322.14972.71302.43034.74414.72734.7273
Cl23.78073.25832.80753.00883.00881.86212.79603.78402.73964.00884.0088
C34.22873.25834.00774.62874.62872.58351.51562.22981.09311.09981.0998
C41.09722.80754.00771.09761.09761.51422.57352.74754.27684.62054.6205
H51.78323.00884.62871.09761.77142.16553.28193.50764.78995.39675.0982
H61.78323.00884.62871.09761.77142.16553.28193.50764.78995.09825.3967
C72.14971.86212.58351.51422.16552.16551.35082.06612.76303.28893.2889
C82.71302.79601.51562.57353.28193.28191.35081.09392.17252.16212.1621
H92.43033.78402.22982.74753.50763.50762.06611.09393.12702.58672.5867
H104.74412.73961.09314.27684.78994.78992.76302.17253.12701.77911.7791
H114.72734.00881.09984.62055.39675.09823.28892.16212.58671.77911.7686
H124.72734.00881.09984.62055.09825.39673.28892.16212.58671.77911.7686

picture of 2-Butene, 2-chloro-, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C4 H5 108.678 H1 C4 H6 108.678
H1 C4 C7 109.782 Cl2 C7 C4 112.104
Cl2 C7 C8 120.132 C3 C8 C7 128.564
C3 C8 H9 116.476 C4 C7 C8 127.765
H5 C4 H6 107.599 H5 C4 C7 111.013
H6 C4 C7 111.013 C7 C8 H9 114.960
C8 C3 H10 111.744 C8 C3 H11 110.508
C8 C3 H12 110.508 H10 C3 H11 108.445
H10 C3 H12 108.445 H11 C3 H12 107.040
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.169      
2 Cl 0.006      
3 C -0.607      
4 C -0.584      
5 H 0.176      
6 H 0.176      
7 C -0.030      
8 C 0.021      
9 H 0.165      
10 H 0.186      
11 H 0.161      
12 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.253 0.422 0.000 2.292
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.350 -0.287 0.000
y -0.287 -34.225 0.000
z 0.000 0.000 -39.332
Traceless
 xyz
x -2.571 -0.287 0.000
y -0.287 5.116 0.000
z 0.000 0.000 -2.544
Polar
3z2-r2-5.089
x2-y2-5.125
xy-0.287
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.463 -1.104 0.000
y -1.104 9.859 0.000
z 0.000 0.000 5.380


<r2> (average value of r2) Å2
<r2> 131.489
(<r2>)1/2 11.467