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 (1,4-Cyclohexadiene)

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-233.390403
Energy at 298.15K-233.399048
Nuclear repulsion energy218.135882
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3199 3066 0.00      
2 Ag 3013 2888 0.00      
3 Ag 1776 1702 0.00      
4 Ag 1452 1391 0.00      
5 Ag 1223 1172 0.00      
6 Ag 880 844 0.00      
7 Ag 542 520 0.00      
8 Au 1209 1158 0.00      
9 Au 996 954 0.00      
10 Au 387 371 0.00      
11 B1g 3175 3042 0.00      
12 B1g 1418 1359 0.00      
13 B1g 1352 1295 0.00      
14 B1g 1051 1007 0.00      
15 B1g 579 554 0.00      
16 B1u 3031 2905 32.86      
17 B1u 979 939 31.26      
18 B1u 624 598 68.43      
19 B1u 111 106 1.16      
20 B2g 3033 2907 0.00      
21 B2g 1011 969 0.00      
22 B2g 953 913 0.00      
23 B2g 407 390 0.00      
24 B2u 3197 3064 66.84      
25 B2u 1728 1656 9.66      
26 B2u 1387 1329 0.16      
27 B2u 1171 1122 0.28      
28 B2u 963 923 0.33      
29 B3g 1212 1162 0.00      
30 B3g 719 689 0.00      
31 B3u 3175 3042 16.70      
32 B3u 3015 2889 92.25      
33 B3u 1455 1395 10.23      
34 B3u 1434 1374 0.74      
35 B3u 973 933 0.62      
36 B3u 914 876 13.61      

Unscaled Zero Point Vibrational Energy (zpe) 26872.5 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 25752.0 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/aug-cc-pVDZ
ABC
0.17308 0.16347 0.08672

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.497 0.000 0.000
C2 -1.497 0.000 0.000
C3 -0.668 1.249 0.000
C4 0.668 1.249 0.000
C5 -0.668 -1.249 0.000
C6 0.668 -1.249 0.000
H7 1.203 -2.200 0.000
H8 -1.203 -2.200 0.000
H9 1.203 2.200 0.000
H10 -1.203 2.200 0.000
H11 2.174 0.000 0.872
H12 -2.174 0.000 0.872
H13 2.174 0.000 -0.872
H14 -2.174 0.000 -0.872

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C12.99412.49881.49902.49881.49902.21953.48282.21953.48281.10383.77291.10383.7729
C22.99411.49902.49881.49902.49883.48282.21953.48282.21953.77291.10383.77291.1038
C32.49881.49901.33512.49712.83163.92313.48982.09861.09173.22372.14193.22372.1419
C41.49902.49881.33512.83162.49713.48983.92311.09172.09862.14193.22372.14193.2237
C52.49881.49902.49712.83161.33512.09861.09173.92313.48983.22372.14193.22372.1419
C61.49902.49882.83162.49711.33511.09172.09863.48983.92312.14193.22372.14193.2237
H72.21953.48283.92313.48982.09861.09172.40604.39995.01482.55784.12342.55784.1234
H83.48282.21953.48983.92311.09172.09862.40605.01484.39994.12342.55784.12342.5578
H92.21953.48282.09861.09173.92313.48984.39995.01482.40602.55784.12342.55784.1234
H103.48282.21951.09172.09863.48983.92315.01484.39992.40604.12342.55784.12342.5578
H111.10383.77293.22372.14193.22372.14192.55784.12342.55784.12344.34751.74404.6842
H123.77291.10382.14193.22372.14193.22374.12342.55784.12342.55784.34754.68421.7440
H131.10383.77293.22372.14193.22372.14192.55784.12342.55784.12341.74404.68424.3475
H143.77291.10382.14193.22372.14193.22374.12342.55784.12342.55784.68421.74404.3475

picture of 1,4-Cyclohexadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 C3 123.599 C1 C4 H9 117.031
C1 C6 C5 123.599 C1 C6 H7 117.031
C2 C3 C4 123.599 C2 C3 H10 117.031
C2 C5 C6 123.599 C2 C5 H8 117.031
C3 C2 C5 112.803 C3 C2 H12 109.832
C3 C2 H14 109.832 C3 C4 H9 119.371
C4 C1 C6 112.803 C4 C1 H11 109.832
C4 C1 H13 109.832 C4 C3 H10 119.371
C5 C2 H12 109.832 C5 C2 H14 109.832
C5 C6 H7 119.371 C6 C1 H11 109.832
C6 C1 H13 109.832 C6 C5 H8 119.371
H11 C1 H13 104.373 H12 C2 H14 104.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.197      
2 C 0.197      
3 C 0.475      
4 C 0.475      
5 C 0.475      
6 C 0.475      
7 H -0.549      
8 H -0.549      
9 H -0.549      
10 H -0.549      
11 H -0.025      
12 H -0.025      
13 H -0.025      
14 H -0.025      


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 -33.443 0.000 0.000
y 0.000 -35.925 0.000
z 0.000 0.000 -39.444
Traceless
 xyz
x 4.241 0.000 0.000
y 0.000 0.519 0.000
z 0.000 0.000 -4.760
Polar
3z2-r2-9.520
x2-y22.482
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.130 0.000 0.000
y 0.000 10.245 0.000
z 0.000 0.000 7.533


<r2> (average value of r2) Å2
<r2> 144.744
(<r2>)1/2 12.031