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 C6H12 (Cyclohexane)

using model chemistry: B3LYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Chair 1A1g
1 2 no twist boat 1A

Conformer 1 (Chair)

Jump to S1C2
Energy calculated at B3LYP/cc-pVTZ
 hartrees
Energy at 0K-235.965446
Energy at 298.15K-235.979978
Nuclear repulsion energy255.745326
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/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1g 3049 2947 0.00      
2 A1g 2996 2896 0.00      
3 A1g 1512 1461 0.00      
4 A1g 1185 1146 0.00      
5 A1g 801 774 0.00      
6 A1g 376 363 0.00      
7 A1u 1371 1325 0.00      
8 A1u 1131 1093 0.00      
9 A1u 1094 1058 0.00      
10 A2g 1356 1311 0.00      
11 A2g 1075 1039 0.00      
12 A2u 3055 2952 148.19      
13 A2u 3007 2907 74.31      
14 A2u 1497 1447 13.30      
15 A2u 1045 1010 2.19      
16 A2u 523 505 0.72      
17 Eg 3047 2945 0.00      
17 Eg 3047 2945 0.00      
18 Eg 3004 2904 0.00      
18 Eg 3004 2904 0.00      
19 Eg 1487 1437 0.00      
19 Eg 1487 1437 0.00      
20 Eg 1378 1332 0.00      
20 Eg 1378 1332 0.00      
21 Eg 1293 1250 0.00      
21 Eg 1293 1250 0.00      
22 Eg 1036 1001 0.00      
22 Eg 1036 1001 0.00      
23 Eg 794 767 0.00      
23 Eg 794 767 0.00      
24 Eg 429 415 0.00      
24 Eg 429 415 0.00      
25 Eu 3045 2943 123.59      
25 Eu 3045 2943 123.59      
26 Eu 2996 2896 24.51      
26 Eu 2996 2896 24.51      
27 Eu 1491 1441 4.95      
27 Eu 1491 1441 4.95      
28 Eu 1389 1343 0.30      
28 Eu 1389 1343 0.30      
29 Eu 1288 1245 1.88      
29 Eu 1288 1245 1.88      
30 Eu 919 888 1.81      
30 Eu 919 888 1.81      
31 Eu 863 834 1.85      
31 Eu 863 834 1.85      
32 Eu 228 221 0.00      
32 Eu 228 221 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 37222.2 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 35979.0 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 B3LYP/cc-pVTZ
ABC
0.14366 0.14366 0.08188

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is D3d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.463 0.227
C2 -1.267 0.732 0.227
C3 1.267 0.732 0.227
C4 0.000 1.463 -0.227
C5 -1.267 -0.732 -0.227
C6 1.267 -0.732 -0.227
H7 0.000 -1.535 1.320
H8 -1.330 0.768 1.320
H9 1.330 0.768 1.320
H10 0.000 1.535 -1.320
H11 -1.330 -0.768 -1.320
H12 1.330 -0.768 -1.320
H13 0.000 -2.489 -0.150
H14 -2.155 1.244 -0.150
H15 2.155 1.244 -0.150
H16 0.000 2.489 0.150
H17 -2.155 -1.244 0.150
H18 2.155 -1.244 0.150

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C12.53462.53462.96181.53241.53241.09542.81782.81783.37462.15592.15591.09253.48123.48123.95272.16772.1677
C22.53462.53461.53241.53242.96182.81781.09542.81782.15592.15593.37463.48121.09253.48122.16772.16773.9527
C32.53462.53461.53242.96181.53242.81782.81781.09542.15593.37462.15593.48123.48121.09252.16773.95272.1677
C42.96181.53241.53242.53462.53463.37462.15592.15591.09542.81782.81783.95272.16772.16771.09253.48123.4812
C51.53241.53242.96182.53462.53462.15592.15593.37462.81781.09542.81782.16772.16773.95273.48121.09253.4812
C61.53242.96181.53242.53462.53462.15593.37462.15592.81782.81781.09542.16773.95272.16773.48123.48121.0925
H71.09542.81782.81783.37462.15592.15592.65912.65914.05003.05483.05481.75233.81223.81224.19072.46982.4698
H82.81781.09542.81782.15592.15593.37462.65912.65923.05483.05484.05003.81221.75233.81222.46982.46984.1907
H92.81782.81781.09542.15593.37462.15592.65912.65923.05484.05003.05483.81223.81221.75232.46984.19072.4698
H103.37462.15592.15591.09542.81782.81784.05003.05483.05482.65912.65914.19072.46982.46981.75233.81223.8122
H112.15592.15593.37462.81781.09542.81783.05483.05484.05002.65912.65922.46982.46984.19073.81221.75233.8122
H122.15593.37462.15592.81782.81781.09543.05484.05003.05482.65912.65922.46984.19072.46983.81223.81221.7523
H131.09253.48123.48123.95272.16772.16771.75233.81223.81224.19072.46982.46984.31044.31044.98622.50662.5066
H143.48121.09253.48122.16772.16773.95273.81221.75233.81222.46982.46984.19074.31044.31042.50662.50664.9862
H153.48123.48121.09252.16773.95272.16773.81223.81221.75232.46984.19072.46984.31044.31042.50664.98622.5066
H163.95272.16772.16771.09253.48123.48124.19072.46982.46981.75233.81223.81224.98622.50662.50664.31044.3104
H172.16772.16773.95273.48121.09253.48122.46982.46984.19073.81221.75233.81222.50662.50664.98624.31044.3104
H182.16773.95272.16773.48123.48121.09252.46984.19072.46983.81223.81221.75232.50664.98622.50664.31044.3104

picture of Cyclohexane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 C2 111.584 C1 C5 H11 109.117
C1 C5 H17 110.219 C1 C6 C3 111.584
C1 C6 H12 109.117 C1 C6 H18 110.219
C2 C4 C3 111.584 C2 C4 H10 109.117
C2 C4 H16 110.219 C2 C5 H11 109.117
C2 C5 H17 110.219 C3 C4 H10 109.117
C3 C4 H16 110.219 C3 C6 H12 109.117
C3 C6 H18 110.219 C4 C2 C5 111.584
C4 C2 H8 109.117 C4 C2 H14 110.219
C4 C3 C6 111.584 C4 C3 H9 109.117
C4 C3 H15 110.219 C5 C1 C6 111.584
C5 C1 H7 109.117 C5 C1 H13 110.219
C5 C2 H8 109.117 C5 C2 H14 110.219
C6 C1 H7 109.117 C6 C1 H13 110.219
C6 C3 H9 109.117 C6 C3 H15 110.219
H7 C1 H13 106.437 H8 C2 H14 106.437
H9 C3 H15 106.437 H10 C4 H16 106.437
H11 C5 H17 106.437 H12 C6 H18 106.437
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.162     -0.006
2 C -0.162     -0.003
3 C -0.162     -0.010
4 C -0.162     -0.006
5 C -0.162     -0.003
6 C -0.162     -0.010
7 H 0.074     0.010
8 H 0.074     0.009
9 H 0.074     0.011
10 H 0.074     0.010
11 H 0.074     0.009
12 H 0.074     0.011
13 H 0.088     -0.004
14 H 0.088     -0.005
15 H 0.088     -0.003
16 H 0.088     -0.004
17 H 0.088     -0.005
18 H 0.088     -0.003


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 -0.002 0.000 0.000 0.002


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.786 0.000 0.000
y 0.000 -40.786 0.000
z 0.000 0.000 -40.134
Traceless
 xyz
x -0.326 0.000 0.000
y 0.000 -0.326 0.000
z 0.000 0.000 0.652
Polar
3z2-r21.303
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.743 0.000 0.000
y 0.000 10.743 -0.000
z 0.000 -0.000 9.346


<r2> (average value of r2) Å2
<r2> 166.189
(<r2>)1/2 12.891

Conformer 2 (twist boat)

Jump to S1C1
Energy calculated at B3LYP/cc-pVTZ
 hartrees
Energy at 0K-235.955440
Energy at 298.15K-235.969737
Nuclear repulsion energy255.836977
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/cc-pVTZ
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 3070 2968 124.80      
2 A 3060 2958 0.00      
3 A 3041 2939 18.31      
4 A 3023 2922 0.32      
5 A 3020 2919 50.28      
6 A 3013 2913 0.62      
7 A 1523 1472 0.34      
8 A 1509 1458 8.89      
9 A 1492 1442 0.09      
10 A 1381 1335 0.00      
11 A 1354 1309 0.01      
12 A 1348 1303 0.36      
13 A 1297 1254 0.00      
14 A 1270 1228 0.00      
15 A 1262 1220 0.33      
16 A 1055 1020 0.30      
17 A 1030 996 0.00      
18 A 944 912 0.00      
19 A 906 875 0.00      
20 A 803 776 0.01      
21 A 780 754 2.17      
22 A 469 454 0.00      
23 A 430 416 0.33      
24 A 271 262 0.00      
25 A 115 111 0.04      
26 B 3064 2962 79.04      
27 B 3055 2953 70.92      
28 B 3045 2943 46.01      
29 B 3025 2924 65.96      
30 B 3014 2913 11.21      
31 B 3002 2902 18.04      
32 B 1504 1454 4.31      
33 B 1498 1448 3.55      
34 B 1492 1442 0.14      
35 B 1385 1339 0.98      
36 B 1383 1337 0.49      
37 B 1373 1327 0.50      
38 B 1312 1268 1.65      
39 B 1176 1136 1.83      
40 B 1153 1115 0.08      
41 B 1115 1078 0.00      
42 B 1096 1059 0.00      
43 B 1020 986 1.10      
44 B 869 840 2.06      
45 B 861 833 1.22      
46 B 768 742 1.30      
47 B 558 540 0.40      
48 B 234 226 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 37233.0 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 35989.4 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 B3LYP/cc-pVTZ
ABC
0.14630 0.13899 0.08440

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.394 0.019 0.379
C2 0.744 1.330 0.000
C3 0.744 -1.178 -0.380
C4 1.394 -0.019 0.379
C5 -0.744 -1.330 0.000
C6 -0.744 1.178 -0.380
H7 -1.285 0.195 1.453
H8 0.843 2.025 0.837
H9 1.277 -2.112 -0.188
H10 1.285 -0.195 1.453
H11 -0.843 -2.025 0.837
H12 -1.277 2.112 -0.188
H13 -2.467 -0.015 0.186
H14 1.286 1.779 -0.835
H15 0.836 -0.993 -1.454
H16 2.467 0.015 0.186
H17 -1.286 -1.779 -0.835
H18 -0.836 0.993 -1.454

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C12.53632.56542.78781.54421.53011.09373.03903.46312.89362.16612.17111.09143.42833.05883.86612.17242.1489
C22.53632.53661.54423.04771.54402.74121.09243.48732.17433.80442.17523.48681.09242.74142.17543.80592.1741
C32.56542.53661.53011.54402.78733.05993.42811.09152.14892.17193.86583.46263.04071.09372.17092.16592.8921
C42.78781.54421.53012.53632.56542.89362.16612.17111.09373.03903.46313.86612.17242.14891.09143.42833.0588
C51.54423.04771.54402.53632.53662.17433.80442.17522.74121.09243.48732.17543.80592.17413.48681.09242.7414
C61.53011.54402.78732.56542.53662.14892.17193.86583.05993.42811.09152.17092.16592.89213.46263.04071.0937
H71.09372.74123.05992.89362.17432.14892.87303.81772.59882.34632.52301.74593.78843.78933.96433.02213.0473
H83.03901.09243.42812.16613.80442.17192.87304.28382.34634.38702.35593.94241.74723.78862.66544.66903.0221
H93.46313.48731.09152.17112.17523.86583.81774.28382.52302.35594.93504.30763.94401.74592.46572.66403.9626
H102.89362.17432.14891.09372.74123.05992.59882.34632.52302.87303.81773.96433.02213.04731.74593.78843.7893
H112.16613.80442.17193.03901.09243.42812.34634.38702.35592.87304.28382.66544.66903.02213.94241.74723.7886
H122.17112.17523.86583.46313.48731.09152.52302.35594.93503.81774.28382.46572.66403.96264.30763.94401.7459
H131.09143.48683.46263.86612.17542.17091.74593.94244.30763.96432.66542.46574.28373.81584.93502.35602.5228
H143.42831.09243.04072.17243.80592.16593.78841.74723.94403.02214.66902.66404.28372.87522.35604.39042.3466
H153.05882.74141.09372.14892.17412.89213.78933.78861.74593.04733.02213.96263.81582.87522.52282.34662.5958
H163.86612.17542.17091.09143.48683.46263.96432.66542.46571.74593.94244.30764.93502.35602.52284.28373.8158
H172.17243.80592.16593.42831.09243.04073.02214.66902.66403.78841.74723.94402.35604.39042.34664.28372.8752
H182.14892.17412.89213.05882.74141.09373.04733.02213.96263.78933.78861.74592.52282.34662.59583.81582.8752

picture of Cyclohexane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 C2 56.168 C1 C5 H11 109.287
C1 C5 H17 109.776 C1 C6 C3 65.561
C1 C6 H12 110.709 C1 C6 H18 108.830
C2 C4 C3 111.192 C2 C4 H10 109.852
C2 C4 H16 110.070 C2 C5 H11 126.837
C2 C5 H17 126.956 C3 C4 H10 108.829
C3 C4 H16 110.692 C3 C6 H12 169.555
C3 C6 H18 84.339 C4 C2 C5 56.168
C4 C2 H8 109.287 C4 C2 H14 109.776
C4 C3 C6 65.561 C4 C3 H9 110.709
C4 C3 H15 108.830 C5 C1 C6 111.192
C5 C1 H7 109.852 C5 C1 H13 110.070
C5 C2 H8 126.837 C5 C2 H14 126.956
C6 C1 H7 108.829 C6 C1 H13 110.692
C6 C3 H9 169.555 C6 C3 H15 84.339
H7 C1 H13 106.069 H8 C2 H14 106.208
H9 C3 H15 106.067 H10 C4 H16 106.069
H11 C5 H17 106.208 H12 C6 H18 106.067
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.154      
2 C -0.190      
3 C -0.154      
4 C -0.154      
5 C -0.190      
6 C -0.154      
7 H 0.075      
8 H 0.085      
9 H 0.090      
10 H 0.075      
11 H 0.085      
12 H 0.090      
13 H 0.090      
14 H 0.085      
15 H 0.074      
16 H 0.090      
17 H 0.085      
18 H 0.074      


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 -40.696 -0.129 0.000
y -0.129 -40.851 0.000
z 0.000 0.000 -40.034
Traceless
 xyz
x -0.254 -0.129 0.000
y -0.129 -0.486 0.000
z 0.000 0.000 0.739
Polar
3z2-r21.479
x2-y20.155
xy-0.129
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.598 0.053 0.000
y 0.053 10.665 0.000
z 0.000 0.000 9.275


<r2> (average value of r2) Å2
<r2> 165.005
(<r2>)1/2 12.845