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All results from a given calculation for C6H6 (Benzene)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D6H 1A1g
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-229.937670
Energy at 298.15K-229.943977
HF Energy-229.415511
Nuclear repulsion energy201.928606
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 MP2/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1g 3223 3077 0.00 302.47 0.10 0.19
2 A1g 993 947 0.00 49.06 0.12 0.21
3 A2g 1435 1370 0.00 0.00 0.00 0.00
4 A2u 684 653 122.50 0.00 0.00 0.00
5 B1u 3183 3038 0.00 0.00 0.75 0.86
6 B1u 1068 1019 0.00 0.00 0.00 0.00
7 B2g 933 891 0.00 0.00 0.75 0.86
8 B2g 678 647 0.00 0.00 0.00 0.00
9 B2u 1319 1259 0.00 0.00 0.00 0.00
10 B2u 1237 1181 0.00 0.00 0.00 0.00
11 E1g 852 813 0.00 7.32 0.75 0.86
11 E1g 852 813 0.00 7.32 0.75 0.86
12 E1u 3210 3064 30.93 0.00 0.00 0.00
12 E1u 3210 3064 30.93 0.00 0.00 0.00
13 E1u 1533 1463 11.39 0.00 0.00 0.00
13 E1u 1533 1463 11.39 0.00 0.00 0.00
14 E1u 1056 1008 3.04 0.00 0.00 0.00
14 E1u 1056 1008 3.04 0.00 0.00 0.00
15 E2g 3192 3047 0.00 113.20 0.75 0.86
15 E2g 3192 3047 0.00 113.20 0.75 0.86
16 E2g 1599 1526 0.00 12.25 0.75 0.86
16 E2g 1599 1526 0.00 12.25 0.75 0.86
17 E2g 1247 1190 0.00 7.58 0.75 0.86
17 E2g 1247 1190 0.00 7.58 0.75 0.86
18 E2g 646 617 0.00 3.38 0.75 0.86
18 E2g 646 617 0.00 3.38 0.75 0.86
19 E2u 931 889 0.00 0.00 0.00 0.00
19 E2u 931 889 0.00 0.00 0.00 0.00
20 E2u 412 393 0.00 0.00 0.00 0.00
20 E2u 412 393 0.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 22054.9 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 21051.4 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 MP2/3-21G
ABC
0.18718 0.18718 0.09359

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is D6h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.407 0.000
C2 1.218 0.703 0.000
C3 1.218 -0.703 0.000
C4 0.000 -1.407 0.000
C5 -1.218 -0.703 0.000
C6 -1.218 0.703 0.000
H7 0.000 2.494 0.000
H8 2.160 1.247 0.000
H9 2.160 -1.247 0.000
H10 0.000 -2.494 0.000
H11 -2.160 -1.247 0.000
H12 -2.160 1.247 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.40692.43682.81382.43681.40691.08692.16563.42163.90073.42162.1656
C21.40691.40692.43682.81382.43682.16561.08692.16563.42163.90073.4216
C32.43681.40691.40692.43682.81383.42162.16561.08692.16563.42163.9007
C42.81382.43681.40691.40692.43683.90073.42162.16561.08692.16563.4216
C52.43682.81382.43681.40691.40693.42163.90073.42162.16561.08692.1656
C61.40692.43682.81382.43681.40692.16563.42163.90073.42162.16561.0869
H71.08692.16563.42163.90073.42162.16562.49384.31944.98774.31942.4938
H82.16561.08692.16563.42163.90073.42162.49382.49384.31944.98774.3194
H93.42162.16561.08692.16563.42163.90074.31942.49382.49384.31944.9877
H103.90073.42162.16561.08692.16563.42164.98774.31942.49382.49384.3194
H113.42163.90073.42162.16561.08692.16564.31944.98774.31942.49382.4938
H122.16563.42163.90073.42162.16561.08692.49384.31944.98774.31942.4938

picture of Benzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.000 C1 C2 H8 120.000
C1 C6 C5 120.000 C1 C6 H12 120.000
C2 C1 C6 120.000 C2 C1 H7 120.000
C2 C3 C4 120.000 C2 C3 H9 120.000
C3 C2 H8 120.000 C3 C4 C5 120.000
C3 C4 H10 120.000 C4 C3 H9 120.000
C4 C5 C6 120.000 C4 C5 H11 120.000
C5 C4 H10 120.000 C5 C6 H12 120.000
C6 C1 H7 120.000 C6 C5 H11 120.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability