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All results from a given calculation for C6H6 (1,2,4,5-Hexatetraene)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-229.871675
Energy at 298.15K-229.875503
HF Energy-229.287270
Nuclear repulsion energy174.758416
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 QCISD/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 3118 2997 0.00      
2 Ag 3107 2986 0.00      
3 Ag 2002 1924 0.00      
4 Ag 1545 1485 0.00      
5 Ag 1445 1389 0.00      
6 Ag 1165 1120 0.00      
7 Ag 1021 981 0.00      
8 Ag 932 896 0.00      
9 Ag 530 510 0.00      
10 Ag 214 206 0.00      
11 Au 3173 3050 13.01      
12 Au 1090 1047 0.20      
13 Au 927 891 40.54      
14 Au 487 468 5.63      
15 Au 301 289 12.42      
16 Au 72 69 0.24      
17 Bg 3173 3050 0.00      
18 Bg 1091 1049 0.00      
19 Bg 914 878 0.00      
20 Bg 677 651 0.00      
21 Bg 281 271 0.00      
22 Bu 3126 3004 9.18      
23 Bu 3107 2986 14.15      
24 Bu 2017 1939 25.21      
25 Bu 1533 1473 0.25      
26 Bu 1336 1285 4.46      
27 Bu 1097 1055 1.27      
28 Bu 932 896 109.28      
29 Bu 522 502 19.25      
30 Bu 116 111 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 20525.4 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 19726.9 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 QCISD/3-21G*
ABC
1.04544 0.04461 0.04355

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.334 0.666 0.000
C2 0.334 -0.666 0.000
C3 0.334 1.811 0.000
C4 -0.334 -1.811 0.000
C5 1.003 2.948 0.000
C6 -1.003 -2.948 0.000
H7 -1.427 0.672 0.000
H8 1.427 -0.672 0.000
H9 1.294 3.445 0.927
H10 1.294 3.445 -0.927
H11 -1.294 -3.445 0.927
H12 -1.294 -3.445 -0.927

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.49091.32532.47762.64473.67621.09302.21213.35113.35114.32264.3226
C21.49092.47761.32533.67622.64472.21211.09304.32264.32263.35113.3511
C31.32532.47763.68331.31944.94372.09702.71342.10972.10975.58005.5800
C42.47761.32533.68334.94371.31942.71342.09705.58005.58002.10972.1097
C52.64473.67621.31944.94376.22853.32923.64561.09121.09126.85646.8564
C63.67622.64474.94371.31946.22853.64563.32926.85646.85641.09121.0912
H71.09302.21212.09702.71343.32923.64563.15483.99393.99394.22244.2224
H82.21211.09302.71342.09703.64563.32923.15484.22244.22243.99393.9939
H93.35114.32262.10975.58001.09126.85643.99394.22241.85397.36007.5899
H103.35114.32262.10975.58001.09126.85643.99394.22241.85397.58997.3600
H114.32263.35115.58002.10976.85641.09124.22243.99397.36007.58991.8539
H124.32263.35115.58002.10976.85641.09124.22243.99397.58997.36001.8539

picture of 1,2,4,5-Hexatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 123.119 C1 C2 H8 116.928
C1 C3 C5 179.805 C2 C1 C3 123.119
C2 C1 H7 116.928 C2 C4 C6 179.805
C3 C1 H7 119.952 C3 C5 H9 121.845
C3 C5 H10 121.845 C4 C2 H8 119.952
C4 C6 H11 121.845 C4 C6 H12 121.845
H9 C5 H10 116.310 H11 C6 H12 116.310
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability