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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-192.655345
Energy at 298.15K-192.661102
Nuclear repulsion energy147.743463
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 HF/6-31G
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 3676 3319 73.91      
2 A 3422 3089 22.05      
3 A 3345 3020 8.07      
4 A 3328 3004 8.24      
5 A 2392 2160 11.01      
6 A 1657 1496 0.67      
7 A 1529 1381 3.96      
8 A 1311 1184 0.92      
9 A 1256 1134 1.92      
10 A 1226 1107 5.23      
11 A 1038 937 29.32      
12 A 895 808 10.87      
13 A 883 797 54.71      
14 A 819 739 8.09      
15 A 567 512 17.55      
16 A 236 213 2.21      
17 A 3406 3075 0.07      
18 A 3319 2997 18.99      
19 A 1628 1470 3.66      
20 A 1333 1204 0.57      
21 A 1286 1161 0.93      
22 A 1240 1119 7.98      
23 A 1025 926 1.54      
24 A 909 821 21.74      
25 A 857 774 78.01      
26 A 591 534 7.18      
27 A 240 217 2.47      

Unscaled Zero Point Vibrational Energy (zpe) 21706.2 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 19598.6 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 HF/6-31G
ABC
0.53556 0.11149 0.10571

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.629 0.000
C2 -1.088 -0.319 0.000
H3 -0.315 1.655 0.000
C4 1.281 0.322 0.749
C5 1.281 0.322 -0.749
C6 -1.991 -1.103 0.000
H7 -2.785 -1.794 0.000
H8 1.759 1.132 1.265
H9 1.342 -0.619 1.257
H10 1.759 1.132 -1.265
H11 1.342 -0.619 -1.257

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.44311.07341.51531.51532.63903.69172.22402.22272.22402.2227
C21.44312.11992.56602.56601.19592.24863.43652.75253.43652.7525
H31.07342.11992.21032.21033.22724.24222.48503.08242.48503.0824
C41.51532.56602.21031.49803.64664.64471.07261.07182.22282.2169
C51.51532.56602.21031.49803.64664.64472.22282.21691.07261.0718
C62.63901.19593.22723.64663.64661.05284.54493.59494.54493.5949
H73.69172.24864.24224.64474.64471.05285.55074.47165.55074.4716
H82.22403.43652.48501.07262.22284.54495.55071.80062.53013.0988
H92.22272.75253.08241.07182.21693.59494.47161.80063.09882.5138
H102.22403.43652.48502.22281.07264.54495.55072.53013.09881.8006
H112.22272.75253.08242.21691.07183.59494.47163.09882.51381.8006

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.906 C1 C4 C5 60.375
C1 C4 H8 117.477 C1 C4 H9 117.421
C1 C5 C4 60.375 C1 C5 H10 117.477
C1 C5 H11 117.421 C2 C1 H3 113.982
C2 C1 C4 120.287 C2 C1 C5 120.287
C2 C6 H7 179.960 H3 C1 C4 116.227
H3 C1 C5 116.227 C4 C1 C5 59.249
C4 C5 H10 118.756 C4 C5 H11 118.286
C5 C4 H8 118.756 C5 C4 H9 118.286
H8 C4 H9 114.212 H10 C5 H11 114.212
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.148 -0.030    
2 C -0.022 0.056    
3 H 0.216 0.099    
4 C -0.322 -0.200    
5 C -0.322 -0.200    
6 C -0.498 -0.424    
7 H 0.343 0.270    
8 H 0.183 0.101    
9 H 0.194 0.113    
10 H 0.183 0.101    
11 H 0.194 0.113    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.773 0.346 0.000 0.847
CHELPG 0.696 0.334 0.000 0.772
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.103 2.631 0.000
y 2.631 -27.689 0.000
z 0.000 0.000 -31.630
Traceless
 xyz
x 0.556 2.631 0.000
y 2.631 2.677 0.000
z 0.000 0.000 -3.233
Polar
3z2-r2-6.467
x2-y2-1.414
xy2.631
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.119 2.193 0.000
y 2.193 6.247 0.000
z 0.000 0.000 4.925


<r2> (average value of r2) Å2
<r2> 120.544
(<r2>)1/2 10.979