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All results from a given calculation for C6H6 (Hexa-1,5-diene-3-yne)

using model chemistry: QCISD/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-231.562027
Energy at 298.15K-231.565840
HF Energy-230.622974
Nuclear repulsion energy174.962754
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/6-31G(2df,p)
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 3296 3123 0.00      
2 Ag 3213 3044 0.00      
3 Ag 3199 3031 0.00      
4 Ag 2349 2225 0.00      
5 Ag 1682 1594 0.00      
6 Ag 1459 1382 0.00      
7 Ag 1341 1271 0.00      
8 Ag 1098 1040 0.00      
9 Ag 718 681 0.00      
10 Ag 521 494 0.00      
11 Ag 215 204 0.00      
12 Au 1029 975 33.72      
13 Au 964 913 58.75      
14 Au 693 657 7.07      
15 Au 180 171 5.29      
16 Au 38 36 0.07      
17 Bg 1027 973 0.00      
18 Bg 964 913 0.00      
19 Bg 707 669 0.00      
20 Bg 356 337 0.00      
21 Bu 3296 3123 11.61      
22 Bu 3213 3044 16.33      
23 Bu 3200 3031 3.84      
24 Bu 1707 1617 19.13      
25 Bu 1475 1398 5.69      
26 Bu 1338 1267 7.08      
27 Bu 1216 1152 18.44      
28 Bu 1023 969 0.07      
29 Bu 525 497 8.36      
30 Bu 108 102 1.96      

Unscaled Zero Point Vibrational Energy (zpe) 21074.1 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 19965.6 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 QCISD/6-31G(2df,p)
ABC
0.86468 0.04546 0.04319

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.606 0.000
C2 0.000 -0.606 0.000
C3 0.000 2.036 0.000
C4 0.000 -2.036 0.000
C5 1.114 2.780 0.000
C6 -1.114 -2.780 0.000
H7 -0.973 2.519 0.000
H8 0.973 -2.519 0.000
H9 2.097 2.326 0.000
H10 1.060 3.861 0.000
H11 -2.097 -2.326 0.000
H12 -1.060 -3.861 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.21131.43072.64202.44263.56372.14603.27212.71263.42373.60464.5908
C21.21132.64201.43073.56372.44263.27212.14603.60464.59082.71263.4237
C31.43072.64204.07271.33894.94301.08564.65762.11712.11034.84035.9919
C42.64201.43074.07274.94301.33894.65761.08564.84035.99192.11712.1103
C52.44263.56371.33894.94305.98872.10265.30001.08301.08286.03136.9873
C63.56372.44264.94301.33895.98875.30002.10266.03136.98731.08301.0828
H72.14603.27211.08564.65762.10265.30005.39973.07592.43614.97356.3802
H83.27212.14604.65761.08565.30002.10265.39974.97356.38023.07592.4361
H92.71263.60462.11714.84031.08306.03133.07594.97351.85256.26386.9461
H103.42374.59082.11035.99191.08286.98732.43616.38021.85256.94618.0079
H113.60462.71264.84032.11716.03131.08304.97353.07596.26386.94611.8525
H124.59083.42375.99192.11036.98731.08286.38022.43616.94618.00791.8525

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 123.714
C1 C3 H7 116.375 C2 C1 C3 180.000
C2 C4 C6 123.714 C2 C4 H8 116.375
C3 C5 H9 121.530 C3 C5 H10 120.880
C4 C6 H11 121.530 C4 C6 H12 120.880
C5 C3 H7 119.911 C6 C4 H8 119.911
H9 C5 H10 117.590 H11 C6 H12 117.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability