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

using model chemistry: QCISD/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 QCISD/3-21G*
 hartrees
Energy at 0K-229.895102
Energy at 298.15K-229.898813
HF Energy-229.311474
Nuclear repulsion energy173.295089
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/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 3212 3087 0.00      
2 Ag 3136 3014 0.00      
3 Ag 3124 3003 0.00      
4 Ag 2293 2203 0.00      
5 Ag 1649 1585 0.00      
6 Ag 1494 1436 0.00      
7 Ag 1363 1310 0.00      
8 Ag 1136 1092 0.00      
9 Ag 709 682 0.00      
10 Ag 552 530 0.00      
11 Ag 240 231 0.00      
12 Au 1004 965 44.94      
13 Au 941 904 84.39      
14 Au 672 646 8.00      
15 Au 169 163 6.32      
16 Au 29 28 0.08      
17 Bg 1002 963 0.00      
18 Bg 941 904 0.00      
19 Bg 668 642 0.00      
20 Bg 286 275 0.00      
21 Bu 3212 3087 25.86      
22 Bu 3136 3014 15.98      
23 Bu 3124 3003 9.34      
24 Bu 1662 1597 14.89      
25 Bu 1505 1446 3.72      
26 Bu 1364 1311 2.30      
27 Bu 1197 1150 24.89      
28 Bu 1021 981 1.03      
29 Bu 546 524 3.79      
30 Bu 108 104 2.33      

Unscaled Zero Point Vibrational Energy (zpe) 20746.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 19939.5 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/3-21G*
ABC
0.84867 0.04455 0.04233

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.611 0.000
C2 0.000 -0.611 0.000
C3 0.000 2.059 0.000
C4 0.000 -2.059 0.000
C5 1.125 2.807 0.000
C6 -1.125 -2.807 0.000
H7 -0.978 2.544 0.000
H8 0.978 -2.544 0.000
H9 2.117 2.356 0.000
H10 1.078 3.895 0.000
H11 -2.117 -2.356 0.000
H12 -1.078 -3.895 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.22221.44802.67022.46693.59812.16683.30372.74383.45603.64534.6329
C21.22222.67021.44803.59812.46693.30372.16683.64534.63292.74383.4560
C31.44802.67024.11831.35054.99411.09214.70642.13792.12854.89696.0507
C42.67021.44804.11834.99411.35054.70641.09214.89696.05072.13792.1285
C52.46693.59811.35054.99416.04732.11945.35311.08961.08926.09657.0541
C63.59812.46694.99411.35056.04735.35312.11946.09657.05411.08961.0892
H72.16683.30371.09214.70642.11945.35315.45213.10112.45965.03156.4400
H83.30372.16684.70641.09215.35312.11945.45215.03156.44003.10112.4596
H92.74383.64532.13794.89691.08966.09653.10115.03151.85676.33567.0203
H103.45604.63292.12856.05071.08927.05412.45966.44001.85677.02038.0822
H113.64532.74384.89692.13796.09651.08965.03153.10116.33567.02031.8567
H124.63293.45606.05072.12857.05411.08926.44002.45967.02038.08221.8567

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 123.607
C1 C3 H7 116.385 C2 C1 C3 180.000
C2 C4 C6 123.607 C2 C4 H8 116.385
C3 C5 H9 121.990 C3 C5 H10 121.119
C4 C6 H11 121.990 C4 C6 H12 121.119
C5 C3 H7 120.008 C6 C4 H8 120.008
H9 C5 H10 116.891 H11 C6 H12 116.891
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability