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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-229.875519
HF Energy-229.287270
Nuclear repulsion energy174.758415
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 3022 0.00      
2 Ag 3107 3011 0.00      
3 Ag 2002 1940 0.00      
4 Ag 1545 1497 0.00      
5 Ag 1445 1401 0.00      
6 Ag 1165 1129 0.00      
7 Ag 1021 989 0.00      
8 Ag 932 903 0.00      
9 Ag 530 514 0.00      
10 Ag 214 208 0.00      
11 Au 3173 3075 13.01      
12 Au 1090 1056 0.20      
13 Au 927 899 40.54      
14 Au 487 472 5.63      
15 Au 301 292 12.42      
16 Au 72 69 0.24      
17 Bg 3173 3075 0.00      
18 Bg 1091 1058 0.00      
19 Bg 914 886 0.00      
20 Bg 677 656 0.00      
21 Bg 281 273 0.00      
22 Bu 3126 3030 9.18      
23 Bu 3107 3011 14.15      
24 Bu 2017 1955 25.21      
25 Bu 1533 1485 0.25      
26 Bu 1336 1295 4.46      
27 Bu 1097 1063 1.27      
28 Bu 932 904 109.28      
29 Bu 522 506 19.25      
30 Bu 116 112 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 20525.4 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 19893.2 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