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 C6H6 (1,2,4,5-Hexatetraene)

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-231.451480
Energy at 298.15K-231.455373
HF Energy-230.593184
Nuclear repulsion energy176.197231
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 MP3=FULL/6-31+G**
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 3253 3031 0.00      
2 Ag 3232 3011 0.00      
3 Ag 2074 1932 0.00      
4 Ag 1560 1454 0.00      
5 Ag 1452 1352 0.00      
6 Ag 1204 1122 0.00      
7 Ag 1067 994 0.00      
8 Ag 896 834 0.00      
9 Ag 543 506 0.00      
10 Ag 232 216 0.00      
11 Au 3318 3091 4.73      
12 Au 1049 977 2.20      
13 Au 925 862 38.49      
14 Au 486 453 5.30      
15 Au 312 291 16.81      
16 Au 65 61 0.26      
17 Bg 3318 3091 0.00      
18 Bg 1050 979 0.00      
19 Bg 899 838 0.00      
20 Bg 671 625 0.00      
21 Bg 298 278 0.00      
22 Bu 3260 3037 5.24      
23 Bu 3232 3011 11.90      
24 Bu 2086 1943 64.06      
25 Bu 1522 1418 0.07      
26 Bu 1312 1222 14.11      
27 Bu 1128 1051 1.24      
28 Bu 896 835 114.78      
29 Bu 539 502 29.99      
30 Bu 122 113 0.93      

Unscaled Zero Point Vibrational Energy (zpe) 20999.5 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 19563.1 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 MP3=FULL/6-31+G**
ABC
1.06379 0.04534 0.04427

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.331 0.657 0.000
C2 0.331 -0.657 0.000
C3 0.331 1.796 0.000
C4 -0.331 -1.796 0.000
C5 0.994 2.927 0.000
C6 -0.994 -2.927 0.000
H7 -1.413 0.673 0.000
H8 1.413 -0.673 0.000
H9 1.276 3.411 0.924
H10 1.276 3.411 -0.924
H11 -1.276 -3.411 0.924
H12 -1.276 -3.411 -0.924

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.47211.31732.45332.62823.64501.08222.19393.31983.31984.27794.2779
C21.47212.45331.31733.64502.62822.19391.08224.27794.27793.31983.3198
C31.31732.45333.65261.31094.90542.07472.69572.08702.08705.52755.5275
C42.45331.31733.65264.90541.31092.69572.07475.52755.52752.08702.0870
C52.62823.64501.31094.90546.18233.29793.62421.08051.08056.79576.7957
C63.64502.62824.90541.31096.18233.62423.29796.79576.79571.08051.0805
H71.08222.19392.07472.69573.29793.62423.13073.94773.94774.18984.1898
H82.19391.08222.69572.07473.62423.29793.13074.18984.18983.94773.9477
H93.31984.27792.08705.52751.08056.79573.94774.18981.84767.28447.5151
H103.31984.27792.08705.52751.08056.79573.94774.18981.84767.51517.2844
H114.27793.31985.52752.08706.79571.08054.18983.94777.28447.51511.8476
H124.27793.31985.52752.08706.79571.08054.18983.94777.51517.28441.8476

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 123.067 C1 C2 H8 117.571
C1 C3 C5 179.811 C2 C1 C3 123.067
C2 C1 H7 117.571 C2 C4 C6 179.811
C3 C1 H7 119.361 C3 C5 H9 121.245
C3 C5 H10 121.245 C4 C2 H8 119.361
C4 C6 H11 121.245 C4 C6 H12 121.245
H9 C5 H10 117.510 H11 C6 H12 117.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability