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All results from a given calculation for C6H8 (1,4-Cyclohexadiene)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-232.059365
Energy at 298.15K-232.068022
Nuclear repulsion energy217.534832
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 B3PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3189 3060 0.00      
2 Ag 3010 2888 0.00      
3 Ag 1766 1694 0.00      
4 Ag 1513 1452 0.00      
5 Ag 1270 1218 0.00      
6 Ag 855 821 0.00      
7 Ag 555 532 0.00      
8 Au 1278 1226 0.00      
9 Au 1023 981 0.00      
10 Au 384 369 0.00      
11 B1g 3161 3032 0.00      
12 B1g 1426 1368 0.00      
13 B1g 1388 1332 0.00      
14 B1g 1069 1026 0.00      
15 B1g 591 567 0.00      
16 B1u 3027 2904 37.49      
17 B1u 994 953 20.33      
18 B1u 644 618 95.29      
19 B1u 105 101 0.94      
20 B2g 3028 2905 0.00      
21 B2g 1038 996 0.00      
22 B2g 981 941 0.00      
23 B2g 408 392 0.00      
24 B2u 3185 3056 66.13      
25 B2u 1726 1655 2.11      
26 B2u 1395 1338 4.05      
27 B2u 1222 1172 0.53      
28 B2u 948 910 0.74      
29 B3g 1277 1225 0.00      
30 B3g 732 703 0.00      
31 B3u 3161 3033 12.03      
32 B3u 3012 2890 62.23      
33 B3u 1520 1458 8.58      
34 B3u 1467 1408 0.31      
35 B3u 996 956 0.37      
36 B3u 886 850 12.50      

Unscaled Zero Point Vibrational Energy (zpe) 27114.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 26013.4 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 B3PW91/3-21G*
ABC
0.17135 0.16285 0.08616

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.503 0.000 0.000
C2 -1.503 0.000 0.000
C3 -0.666 1.256 0.000
C4 0.666 1.256 0.000
C5 -0.666 -1.256 0.000
C6 0.666 -1.256 0.000
H7 1.209 -2.200 0.000
H8 -1.209 -2.200 0.000
H9 1.209 2.200 0.000
H10 -1.209 2.200 0.000
H11 2.169 0.000 0.880
H12 -2.169 0.000 0.880
H13 2.169 0.000 -0.880
H14 -2.169 0.000 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.00662.50701.50962.50701.50962.21933.49202.21933.49201.10313.77591.10313.7759
C23.00661.50962.50701.50962.50703.49202.21933.49202.21933.77591.10313.77591.1031
C32.50701.50961.33252.51262.84403.93183.49832.09901.08833.22322.14703.22322.1470
C41.50962.50701.33252.84402.51263.49833.93181.08832.09902.14703.22322.14703.2232
C52.50701.50962.51262.84401.33252.09901.08833.93183.49833.22322.14703.22322.1470
C61.50962.50702.84402.51261.33251.08832.09903.49833.93182.14703.22322.14703.2232
H72.21933.49203.93183.49832.09901.08832.41754.39945.01982.55624.12552.55624.1255
H83.49202.21933.49833.93181.08832.09902.41755.01984.39944.12552.55624.12552.5562
H92.21933.49202.09901.08833.93183.49834.39945.01982.41752.55624.12552.55624.1255
H103.49202.21931.08832.09903.49833.93185.01984.39942.41754.12552.55624.12552.5562
H111.10313.77593.22322.14703.22322.14702.55624.12552.55624.12554.33741.75964.6807
H123.77591.10312.14703.22322.14703.22324.12552.55624.12552.55624.33744.68071.7596
H131.10313.77593.22322.14703.22322.14702.55624.12552.55624.12551.75964.68074.3374
H143.77591.10312.14703.22322.14703.22324.12552.55624.12552.55624.68071.75964.3374

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 123.675 C1 C4 H9 116.425
C1 C6 C5 123.675 C1 C6 H7 116.425
C2 C3 C4 123.675 C2 C3 H10 116.425
C2 C5 C6 123.675 C2 C5 H8 116.425
C3 C2 C5 112.649 C3 C2 H12 109.541
C3 C2 H14 109.541 C3 C4 H9 119.900
C4 C1 C6 112.649 C4 C1 H11 109.541
C4 C1 H13 109.541 C4 C3 H10 119.900
C5 C2 H12 109.541 C5 C2 H14 109.541
C5 C6 H7 119.900 C6 C1 H11 109.541
C6 C1 H13 109.541 C6 C5 H8 119.900
H11 C1 H13 105.799 H12 C2 H14 105.799
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.531      
2 C -0.531      
3 C -0.174      
4 C -0.174      
5 C -0.174      
6 C -0.174      
7 H 0.206      
8 H 0.206      
9 H 0.206      
10 H 0.206      
11 H 0.234      
12 H 0.234      
13 H 0.234      
14 H 0.234      


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 -34.655 0.000 0.000
y 0.000 -32.639 0.000
z 0.000 0.000 -39.556
Traceless
 xyz
x 1.443 0.000 0.000
y 0.000 4.466 0.000
z 0.000 0.000 -5.909
Polar
3z2-r2-11.817
x2-y2-2.016
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> 144.999
(<r2>)1/2 12.042