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 (Hexa-1,5-diene-3-yne)

using model chemistry: CCSD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at CCSD/cc-pVTZ
 hartrees
Energy at 0K-231.651336
Energy at 298.15K 
HF Energy-230.678905
Nuclear repulsion energy175.106387
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 CCSD/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD/cc-pVTZ
ABC
0.86685 0.04551 0.04324

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.605 0.000
C2 0.000 -0.605 0.000
C3 0.000 2.036 0.000
C4 0.000 -2.036 0.000
C5 1.113 2.778 0.000
C6 -1.113 -2.778 0.000
H7 -0.969 2.519 0.000
H8 0.969 -2.519 0.000
H9 2.093 2.323 0.000
H10 1.056 3.857 0.000
H11 -2.093 -2.323 0.000
H12 -1.056 -3.857 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.20981.43152.64132.44153.56132.14533.27052.70763.41913.59874.5850
C21.20982.64131.43153.56132.44153.27052.14533.59874.58502.70763.4191
C31.43152.64134.07281.33734.94141.08274.65712.11242.10454.83555.9872
C42.64131.43154.07284.94141.33734.65711.08274.83555.98722.11242.1045
C52.44153.56131.33734.94145.98532.09835.29871.08081.08036.02456.9804
C63.56132.44154.94141.33735.98535.29872.09836.02456.98041.08081.0803
H72.14533.27051.08274.65712.09835.29875.39763.06862.42744.97006.3762
H83.27052.14534.65711.08275.29872.09835.39764.97006.37623.06862.4274
H92.70763.59872.11244.83551.08086.02453.06864.97001.85196.25306.9356
H103.41914.58502.10455.98721.08036.98042.42746.37621.85196.93567.9976
H113.59872.70764.83552.11246.02451.08084.97003.06866.25306.93561.8519
H124.58503.41915.98722.10456.98041.08036.37622.42746.93567.99761.8519

picture of Hexa-1,5-diene-3-yne 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 123.682
C1 C3 H7 116.451 C2 C1 C3 180.000
C2 C4 C6 123.682 C2 C4 H8 116.451
C3 C5 H9 121.395 C3 C5 H10 120.661
C4 C6 H11 121.395 C4 C6 H12 120.661
C5 C3 H7 119.868 C6 C4 H8 119.868
H9 C5 H10 117.944 H11 C6 H12 117.944
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability