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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-193.652498
Energy at 298.15K-193.646486
Nuclear repulsion energy147.849313
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3652 3652 66.42      
2 A 3401 3401 23.91      
3 A 3331 3331 9.10      
4 A 3309 3309 12.22      
5 A 2410 2410 9.14      
6 A 1651 1651 0.29      
7 A 1507 1507 6.59      
8 A 1309 1309 1.84      
9 A 1231 1231 0.89      
10 A 1181 1181 3.30      
11 A 1032 1032 22.79      
12 A 867 867 2.19      
13 A 808 808 3.91      
14 A 789 789 43.90      
15 A 549 549 10.42      
16 A 224 224 1.16      
17 A 3385 3385 0.07      
18 A 3301 3301 25.58      
19 A 1598 1598 0.96      
20 A 1308 1308 0.45      
21 A 1233 1233 0.59      
22 A 1197 1197 3.63      
23 A 1010 1010 6.00      
24 A 891 891 9.54      
25 A 737 737 51.90      
26 A 574 574 3.14      
27 A 232 232 1.29      

Unscaled Zero Point Vibrational Energy (zpe) 21357.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 21357.4 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 CBS-Q
See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.635 0.000
C2 -1.085 -0.329 0.000
H3 -0.323 1.664 0.000
C4 1.274 0.331 0.747
C5 1.274 0.331 -0.747
C6 -1.977 -1.118 0.000
H7 -2.770 -1.820 0.000
H8 1.752 1.148 1.262
H9 1.335 -0.617 1.256
H10 1.752 1.148 -1.262
H11 1.335 -0.617 -1.256

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.45181.07811.50831.50832.64243.70142.21952.21922.21952.2192
C21.45182.13392.56172.56171.19062.24953.43902.74143.43902.7414
H31.07812.13392.21042.21043.23654.25732.48263.08612.48263.0861
C41.50832.56172.21041.49423.63734.64141.07801.07712.22142.2164
C51.50832.56172.21041.49423.63734.64142.22142.21641.07801.0771
C62.64241.19063.23653.63733.63731.05904.54263.57724.54263.5772
H73.70142.24954.25734.64144.64141.05905.55454.45815.55454.4581
H82.21953.43902.48261.07802.22144.54265.55451.81372.52503.1033
H92.21922.74143.08611.07712.21643.57724.45811.81373.10332.5113
H102.21953.43902.48262.22141.07804.54265.55452.52503.10331.8137
H112.21922.74143.08612.21641.07713.57724.45813.10332.51131.8137

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.862 C1 C4 C5 60.310
C1 C4 H8 117.259 C1 C4 H9 117.297
C1 C5 C4 60.310 C1 C5 H10 117.259
C1 C5 H11 117.297 C2 C1 H3 114.207
C2 C1 C4 119.843 C2 C1 C5 119.843
C2 C6 H7 179.987 H3 C1 C4 116.450
H3 C1 C5 116.450 C4 C1 C5 59.381
C4 C5 H10 118.564 C4 C5 H11 118.176
C5 C4 H8 118.564 C5 C4 H9 118.176
H8 C4 H9 114.627 H10 C5 H11 114.627
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability