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 C6H8 ((Z)-hexa-2,3,4-triene)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-233.314175
Energy at 298.15K-233.320582
Nuclear repulsion energy190.522315
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 mPW1PW91/6-31G**
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 3181 3027 27.50      
2 A1 3162 3008 4.89      
3 A1 3058 2909 12.06      
4 A1 2241 2132 1.23      
5 A1 1509 1436 6.43      
6 A1 1420 1351 4.03      
7 A1 1399 1331 0.45      
8 A1 1141 1086 1.79      
9 A1 1085 1032 1.45      
10 A1 777 739 0.14      
11 A1 477 454 5.67      
12 A1 100 95 1.29      
13 A2 3118 2967 0.00      
14 A2 1494 1421 0.00      
15 A2 1054 1003 0.00      
16 A2 865 823 0.00      
17 A2 592 563 0.00      
18 A2 234 223 0.00      
19 A2 153 146 0.00      
20 B1 3118 2967 35.52      
21 B1 1495 1422 13.56      
22 B1 1053 1002 0.39      
23 B1 716 681 43.35      
24 B1 247 235 1.38      
25 B1 134 127 2.38      
26 B2 3181 3027 10.11      
27 B2 3162 3009 0.32      
28 B2 3057 2909 63.80      
29 B2 1755 1670 2.48      
30 B2 1496 1423 12.73      
31 B2 1415 1346 8.19      
32 B2 1293 1230 22.47      
33 B2 1114 1060 1.01      
34 B2 952 905 43.06      
35 B2 578 550 3.44      
36 B2 226 215 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 26024.2 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 24762.1 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 mPW1PW91/6-31G**
ABC
0.42566 0.04624 0.04237

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.000 2.207 1.633
H2 0.879 3.465 0.744
H3 -0.879 3.465 0.744
H4 0.000 -2.207 1.633
H5 0.879 -3.465 0.744
H6 -0.879 -3.465 0.744
C7 0.000 2.811 0.726
C8 0.000 -2.811 0.726
H9 0.000 2.469 -1.462
H10 0.000 -2.469 -1.462
C11 0.000 -0.635 -0.501
C12 0.000 0.635 -0.501
C13 0.000 1.953 -0.502
C14 0.000 -1.953 -0.502

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 H10 C11 C12 C13 C14
H11.77401.77404.41395.80815.80811.09045.09983.10645.60733.55372.65072.15044.6762
H21.77401.75835.80816.92977.14931.09556.33762.57486.39084.37353.21412.14705.6284
H31.77401.75835.80817.14936.92971.09556.33762.57486.39084.37353.21412.14705.6284
H44.41395.80815.80811.77401.77405.09981.09045.60733.10642.65073.55374.67622.1504
H55.80816.92977.14931.77401.75836.33761.09556.39082.57483.21414.37355.62842.1470
H65.80817.14936.92971.77401.75836.33761.09556.39082.57483.21414.37355.62842.1470
C71.09041.09551.09555.09986.33766.33765.62292.21465.71543.65792.49851.49824.9203
C85.09986.33766.33761.09041.09551.09555.62295.71542.21462.49853.65794.92031.4982
H93.10642.57482.57485.60736.39086.39082.21465.71544.93713.24882.07061.08964.5247
H105.60736.39086.39083.10642.57482.57485.71542.21464.93712.07063.24884.52471.0896
C113.55374.37354.37352.65073.21413.21413.65792.49853.24882.07061.26942.58791.3184
C122.65073.21413.21413.55374.37354.37352.49853.65792.07063.24881.26941.31842.5879
C132.15042.14702.14704.67625.62845.62841.49824.92031.08964.52472.58791.31843.9063
C144.67625.62845.62842.15042.14702.14704.92031.49824.52471.08961.31842.58793.9063

picture of (Z)-hexa-2,3,4-triene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C7 H2 108.500 H1 C7 H3 108.500
H1 C7 C13 111.379 H2 C7 H3 106.738
H2 C7 C13 110.784 H3 C7 C13 110.784
H4 C8 H5 108.500 H4 C8 H6 108.500
H4 C8 C14 111.379 H5 C8 H6 106.738
H5 C8 C14 110.784 H6 C8 C14 110.784
C7 C13 H9 116.814 C7 C13 C12 124.893
C8 C14 H10 116.814 C8 C14 C11 124.893
H9 C13 C12 118.293 H10 C14 C11 118.293
C11 C12 C13 179.940 C12 C11 C14 179.940
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.149      
2 H 0.149      
3 H 0.149      
4 H 0.149      
5 H 0.149      
6 H 0.149      
7 C -0.416      
8 C -0.416      
9 H 0.148      
10 H 0.148      
11 C 0.157      
12 C 0.157      
13 C -0.336      
14 C -0.336      


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 0.396 0.396
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.228 0.000 0.000
y 0.000 -28.565 0.000
z 0.000 0.000 -35.456
Traceless
 xyz
x -6.217 0.000 0.000
y 0.000 8.277 0.000
z 0.000 0.000 -2.059
Polar
3z2-r2-4.118
x2-y2-9.663
xy0.000
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 263.968
(<r2>)1/2 16.247