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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-157.010206
Energy at 298.15K-157.017928
HF Energy-156.839178
Nuclear repulsion energy117.324803
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 B2PLYP/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 A1 3195 3033 65.10      
2 A1 3176 3014 5.86      
3 A1 3072 2916 12.00      
4 A1 1759 1670 2.65      
5 A1 1548 1469 5.14      
6 A1 1468 1393 3.23      
7 A1 1319 1252 0.05      
8 A1 1050 996 0.70      
9 A1 887 842 0.46      
10 A1 297 282 0.00      
11 A2 3121 2962 0.00      
12 A2 1532 1454 0.00      
13 A2 1082 1027 0.00      
14 A2 1012 961 0.00      
15 A2 392 372 0.00      
16 A2 140 132 0.00      
17 B1 3122 2963 50.86      
18 B1 1537 1459 10.02      
19 B1 1095 1040 1.36      
20 B1 706 670 33.63      
21 B1 125 118 0.78      
22 B2 3175 3013 22.51      
23 B2 3159 2999 3.25      
24 B2 3069 2913 42.21      
25 B2 1540 1462 2.87      
26 B2 1478 1403 5.28      
27 B2 1430 1357 4.71      
28 B2 1182 1122 1.09      
29 B2 1004 953 11.76      
30 B2 573 544 6.49      

Unscaled Zero Point Vibrational Energy (zpe) 24121.4 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 22896.1 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 B2PLYP/6-31G*
ABC
0.54383 0.16884 0.13528

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.674 0.640
C2 0.000 -0.674 0.640
C3 0.000 1.651 -0.507
C4 0.000 -1.651 -0.507
H5 0.000 1.154 1.616
H6 0.000 -1.154 1.616
H7 0.000 1.185 -1.489
H8 0.000 -1.185 -1.489
H9 -0.877 2.307 -0.461
H10 0.877 2.307 -0.461
H11 0.877 -2.307 -0.461
H12 -0.877 -2.307 -0.461

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.34751.50672.59231.08832.07242.18922.82602.15602.15603.29643.2964
C21.34752.59231.50672.07241.08832.82602.18923.29643.29642.15602.1560
C31.50672.59233.30242.18053.51821.08703.00151.09631.09634.05474.0547
C42.59231.50673.30243.51822.18053.00151.08704.05474.05471.09631.0963
H51.08832.07242.18053.51822.30833.10533.88772.53232.53234.13094.1309
H62.07241.08833.51822.18052.30833.88773.10534.13094.13092.53232.5323
H72.18922.82601.08703.00153.10533.88772.37021.75661.75663.74473.7447
H82.82602.18923.00151.08703.88773.10532.37023.74473.74471.75661.7566
H92.15603.29641.09634.05472.53234.13091.75663.74471.75444.93664.6144
H102.15603.29641.09634.05472.53234.13091.75663.74471.75444.61444.9366
H113.29642.15604.05471.09634.13092.53233.74471.75664.93664.61441.7544
H123.29642.15604.05471.09634.13092.53233.74471.75664.61444.93661.7544

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 130.448 C1 C2 H6 116.196
C1 C3 H7 114.161 C1 C3 H9 110.861
C1 C3 H10 110.861 C2 C1 C3 130.448
C2 C1 H5 116.196 C2 C4 H8 114.161
C2 C4 H11 110.861 C2 C4 H12 110.861
C3 C1 H5 113.356 C4 C2 H6 113.356
H7 C3 H9 107.136 H7 C3 H10 107.136
H8 C4 H11 107.136 H8 C4 H12 107.136
H9 C3 H10 106.286 H11 C4 H12 106.286
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.109      
2 C -0.109      
3 C -0.502      
4 C -0.502      
5 H 0.132      
6 H 0.132      
7 H 0.158      
8 H 0.158      
9 H 0.160      
10 H 0.160      
11 H 0.160      
12 H 0.160      


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 -0.166 0.166
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.713 0.000 0.000
y 0.000 -24.996 0.000
z 0.000 0.000 -25.902
Traceless
 xyz
x -2.265 0.000 0.000
y 0.000 1.812 0.000
z 0.000 0.000 0.453
Polar
3z2-r20.906
x2-y2-2.718
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.260 0.000 0.000
y 0.000 8.600 0.000
z 0.000 0.000 5.850


<r2> (average value of r2) Å2
<r2> 99.543
(<r2>)1/2 9.977