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All results from a given calculation for C6H4 ((Z)-Hexa-1,5-diyne-3-ene)

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-229.839339
Energy at 298.15K-229.840345
HF Energy-229.309248
Nuclear repulsion energy162.453322
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 MP2/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3472 3351 44.02      
2 A1 3190 3079 27.85      
3 A1 2063 1991 4.83      
4 A1 1587 1532 3.65      
5 A1 1265 1221 0.60      
6 A1 856 826 6.51      
7 A1 671 647 34.30      
8 A1 414 399 4.78      
9 A1 94 91 0.29      
10 A2 928 896 0.00      
11 A2 617 595 0.00      
12 A2 555 536 0.00      
13 A2 212 204 0.00      
14 B1 789 761 34.07      
15 B1 618 597 136.42      
16 B1 324 312 18.78      
17 B2 3472 3351 32.30      
18 B2 3163 3054 0.05      
19 B2 2071 1999 0.63      
20 B2 1422 1372 1.59      
21 B2 1014 979 7.46      
22 B2 725 700 21.75      
23 B2 665 642 61.69      
24 B2 227 219 5.81      

Unscaled Zero Point Vibrational Energy (zpe) 15205.8 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 14678.1 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 MP2/SDD
ABC
0.22288 0.08218 0.06004

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.691 1.130
C2 0.000 -0.691 1.130
C3 0.000 1.511 -0.066
C4 0.000 -1.511 -0.066
H5 0.000 1.210 2.095
H6 0.000 -1.210 2.095
C7 0.000 2.232 -1.085
C8 0.000 -2.232 -1.085
H9 0.000 2.847 -1.963
H10 0.000 -2.847 -1.963

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 C7 C8 H9 H10
C11.38131.45082.50601.09572.13152.69893.66753.77034.6991
C21.38132.50601.45082.13151.09573.66752.69894.69913.7703
C31.45082.50603.02242.18223.47511.24823.87952.31964.7531
C42.50601.45083.02243.47512.18223.87951.24824.75312.3196
H51.09572.13152.18223.47512.42013.34044.68644.37545.7380
H62.13151.09573.47512.18222.42014.68643.34045.73804.3754
C72.69893.66751.24823.87953.34044.68644.46411.07145.1545
C83.66752.69893.87951.24824.68643.34044.46415.15451.0714
H93.77034.69912.31964.75314.37545.73801.07145.15455.6944
H104.69913.77034.75312.31965.73804.37545.15451.07145.6944

picture of (Z)-Hexa-1,5-diyne-3-ene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 124.442 C1 C2 H6 118.294
C1 C3 C7 179.165 C2 C1 C3 124.442
C2 C1 H5 118.294 C2 C4 C8 179.165
C3 C1 H5 117.264 C3 C7 H9 179.760
C4 C2 H6 117.264 C4 C8 H10 179.760
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability