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 (2,4-Hexadiyne)

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 D3H 1A1'
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-231.459317
Energy at 298.15K 
HF Energy-230.606454
Nuclear repulsion energy169.635855
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 A 3219 2999 0.00      
2 A 3219 2999 0.00      
3 A 3219 2999 16.33      
4 A 3219 2999 16.33      
5 A 3136 2922 0.00      
6 A 3136 2922 55.33      
7 A 2468 2299 0.00      
8 A 2338 2178 1.49      
9 A 1535 1430 13.52      
10 A 1535 1430 13.52      
11 A 1535 1430 0.00      
12 A 1535 1430 0.00      
13 A 1475 1374 0.00      
14 A 1468 1368 11.55      
15 A 1297 1208 0.00      
16 A 1080 1006 0.76      
17 A 1080 1006 0.76      
18 A 1075 1002 0.00      
19 A 1075 1002 0.00      
20 A 972 905 0.02      
21 A 564 525 0.00      
22 A 306 285 0.00      
23 A 306 285 0.00      
24 A 266 248 5.23      
25 A 266 248 5.23      
26 A 105 98 8.27      
27 A 105 98 8.27      
28 A 13i 12i 0.00      
29 A 284i 265i 0.00      
30 A 284i 265i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20477.2 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 19076.6 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
2.68778 0.03674 0.03674

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.694 0.000 0.000
C2 -0.694 0.000 0.000
C3 1.905 0.000 0.000
C4 -1.905 0.000 0.000
C5 3.371 0.000 0.000
C6 -3.371 0.000 0.000
H7 3.752 -0.565 -0.847
H8 3.752 1.016 -0.066
H9 3.752 -0.451 0.913
H10 -3.752 -0.565 -0.847
H11 -3.752 -0.451 0.913
H12 -3.752 1.016 -0.066

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.38761.21172.59922.67714.06473.22343.22343.22344.56104.56104.5610
C21.38762.59921.21174.06472.67714.56104.56104.56103.22343.22343.2234
C31.21172.59923.81091.46555.27642.10892.10892.10895.74855.74855.7485
C42.59921.21173.81095.27641.46555.74855.74855.74852.10892.10892.1089
C52.67714.06471.46555.27646.74191.08751.08751.08757.19547.19547.1954
C64.06472.67715.27641.46556.74197.19547.19547.19541.08751.08751.0875
H73.22344.56102.10895.74851.08757.19541.76421.76427.50417.70877.7087
H83.22344.56102.10895.74851.08757.19541.76421.76427.70877.70877.5041
H93.22344.56102.10895.74851.08757.19541.76421.76427.70877.50417.7087
H104.56103.22345.74852.10897.19541.08757.50417.70877.70871.76421.7642
H114.56103.22345.74852.10897.19541.08757.70877.70877.50411.76421.7642
H124.56103.22345.74852.10897.19541.08757.70877.50417.70871.76421.7642

picture of 2,4-Hexadiyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 180.000 C1 C3 C5 180.000
C2 C1 C3 180.000 C2 C4 C6 180.000
C3 C5 H7 110.515 C3 C5 H8 110.515
C3 C5 H9 110.515 C4 C6 H10 110.515
C4 C6 H11 110.515 C4 C6 H12 110.515
H7 C5 H8 108.408 H7 C5 H9 108.408
H8 C5 H9 108.408 H10 C6 H11 108.408
H10 C6 H12 108.408 H11 C6 H12 108.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability