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: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-229.791612
Energy at 298.15K-229.795648
HF Energy-229.315896
Nuclear repulsion energy174.896316
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 CISD/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 3318 3100 0.00      
2 Ag 3244 3031 0.00      
3 Ag 3230 3018 0.00      
4 Ag 2418 2260 0.00      
5 Ag 1736 1622 0.00      
6 Ag 1546 1444 0.00      
7 Ag 1414 1321 0.00      
8 Ag 1177 1100 0.00      
9 Ag 746 697 0.00      
10 Ag 592 553 0.00      
11 Ag 258 241 0.00      
12 Au 1068 998 34.49      
13 Au 1021 954 115.76      
14 Au 717 670 9.95      
15 Au 182 170 7.23      
16 Au 33 31 0.12      
17 Bg 1066 996 0.00      
18 Bg 1021 954 0.00      
19 Bg 730 682 0.00      
20 Bg 354 331 0.00      
21 Bu 3318 3100 22.52      
22 Bu 3242 3029 15.69      
23 Bu 3230 3018 7.10      
24 Bu 1750 1635 15.16      
25 Bu 1556 1453 3.93      
26 Bu 1412 1320 3.88      
27 Bu 1240 1159 28.59      
28 Bu 1061 991 0.69      
29 Bu 568 531 5.13      
30 Bu 116 108 2.71      

Unscaled Zero Point Vibrational Energy (zpe) 21680.4 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 20258.2 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 CISD/3-21G*
ABC
0.86700 0.04534 0.04309

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.604 0.000
C2 0.000 -0.604 0.000
C3 0.000 2.042 0.000
C4 0.000 -2.042 0.000
C5 1.111 2.783 0.000
C6 -1.111 -2.783 0.000
H7 -0.972 2.521 0.000
H8 0.972 -2.521 0.000
H9 2.096 2.337 0.000
H10 1.063 3.863 0.000
H11 -2.096 -2.337 0.000
H12 -1.063 -3.863 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.20731.43872.64592.44583.56382.14973.27232.71993.42803.61124.5910
C21.20732.64591.43873.56382.44583.27232.14973.61124.59102.71993.4280
C31.43872.64594.08461.33484.95121.08374.66562.11662.10804.85515.9999
C42.64591.43874.08464.95121.33484.66561.08374.85515.99992.11662.1080
C52.44583.56381.33484.95125.99232.09945.30531.08141.08116.04106.9918
C63.56382.44584.95121.33485.99235.30532.09946.04106.99181.08141.0811
H72.14973.27231.08374.66562.09945.30535.40373.07382.43784.98616.3841
H83.27232.14974.66561.08375.30532.09945.40374.98616.38413.07382.4378
H92.71993.61122.11664.85511.08146.04103.07384.98611.84256.27846.9581
H103.42804.59102.10805.99991.08116.99182.43786.38411.84256.95818.0125
H113.61122.71994.85512.11666.04101.08144.98613.07386.27846.95811.8425
H124.59103.42805.99992.10806.99181.08116.38412.43786.95818.01251.8425

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 123.688
C1 C3 H7 116.205 C2 C1 C3 180.000
C2 C4 C6 123.688 C2 C4 H8 116.205
C3 C5 H9 121.975 C3 C5 H10 121.155
C4 C6 H11 121.975 C4 C6 H12 121.155
C5 C3 H7 120.108 C6 C4 H8 120.108
H9 C5 H10 116.870 H11 C6 H12 116.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability